8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 10, 2006

Brigham Exploration Company

(Exact name of registrant as specified in its charter)

Delaware	000-22433	75-2692967
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

6300 Bridgepoint Parkway
Building Two, Suite 500
Austin, Texas 78730
(Address, including zip code, of principal executive offices)

Registrant’s telephone number, including area code: (512) 427-3300

Item 1.01. Entry into Material Definitive Agreement.

     On April 10, 2006, Brigham Exploration Company (“Brigham,” the “Company,” “we,” “us” or “our”), entered into its First Amendment to its Fourth Amended and Restated Credit Agreement dated June 29, 2005 with, Banc of America Securities LLC, as Lead Arranger, Bank of America, N.A., administrative agent and issuing lender, The Royal Bank of Scotland plc, as co-arranger and documentation agent, BNP Paribas, as co-arranger and syndication agent and two other banks, Hibernia National Bank and Natexas Banques Populaires. The First Amendment permits us to consummate the private placement of our 9 5/8% Senior Notes due 2014 (the “Notes”) described in Item 2.03 below, and reduces the borrowing base for our senior credit agreement to $50 million.

     The First Amendment is included herein as Exhibit 10.3 and is incorporated herein by reference. The forgoing description of the First Amendment does not purport to be complete and is qualified in its entirety by reference to such document.

     On April 20, 2006, we entered into a Registration Rights Agreement, dated April 20, 2006, among us, the Guarantors and Banc of America Securities LLC., as representative of the several initial purchasers, each relating to the Notes. Pursuant to the Registration Rights Agreement, we and the Guarantors will use our reasonable best efforts to file an exchange offer registration statement with the SEC with respect to an offer to exchange the Notes for substantially identical notes that are registered under the Securities Act, and to have such registration statement declared effective by the SEC within 180 days after April 20, 2006. Additionally, we and the Guarantors have agreed to promptly commence the exchange offer after the exchange offer registration statement is declared effective by the SEC and to use our reasonable best efforts to complete the exchange offer not later than 30 days after such effective date. Under some circumstances, in lieu of a registered exchange offer, we have agreed to file a shelf registration statement with respect to the notes and to use our reasonable best efforts to keep the shelf registration statement effective until the earlier of the period specified in Rule 144(k) or the sale pursuant to the shelf registration statement of all of the Notes registered thereunder. We are required to pay additional interest if we fail to comply with our obligations to register the Notes within the specified time periods.

     The Registration Rights Agreement is included herein as Exhibit 10.2 and is incorporated herein by reference. The foregoing description of the Registration Rights Agreement and the transactions contemplated therein does not purport to be complete and is qualified in its entirety by reference to such document.

     See also Item 2.03, which is incorporated herein by reference.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off Balance Sheet Arrangement of a Registrant.

     On April 12, 2006, we entered into a Purchase Agreement among Brigham, our wholly-owned subsidiaries, Brigham, Inc. and Brigham Oil & Gas, L.P. (the “Guarantors”) and Banc of America Securities LLC, as representatives of several initial purchasers, relating to our sale and issuance of $125 million in aggregate principal amount of our 9 5/8% Senior Notes due 2014.

     The Purchase Agreement is included herein as Exhibit 10.1 and is incorporated herein by reference. The forgoing description of the Purchase Agreement and the transactions contemplated therein does not purport to be complete and is qualified in its entirety by reference to such document.

     On April 20, 2006, we entered into an Indenture, dated as of April 20, 2006 (the “Indenture”), among us, the Guarantors and Wells Fargo Bank, N.A., as trustee (the “Trustee”) relating to the Notes. The Indenture contains customary events of default. Upon the occurrence of certain events of default, the Trustee or the holders of the Notes may declare all outstanding Notes to be due and payable immediately.

     The Indenture is included herein as Exhibit 4.1 and is incorporated herein by reference. The forgoing description of the Indenture does not purport to be complete and is qualified in its entirety by reference to such document.

     On April 20, 2006, the Notes were issued pursuant to the Indenture in a transaction exempt from the registration requirements under the Securities Act of 1933, as amended (the “Securities Act”). The Notes were sold within the United States only to qualified institutional buyers in reliance on Rule 144A under the Securities Act, and outside the United States only to non-U.S. persons in reliance on Regulation S under the Securities Act. The Notes were priced at 98.629% of their face value to yield 9 7/8%, and are fully and unconditionally guaranteed by the Guarantors. The closing of the sale of the Notes occurred on April 20, 2006, and we issued global notes for the Notes pursuant to an Indenture dated as of April 20, 2006, and entered into the same day, among the Issuers, the Guarantors and Wells Fargo Bank, N.A., as Trustee. The initial purchasers purchased the Notes at a discount equal to 1.625% of the principal amount of the Notes.

     We are obligated to pay the $125 million aggregate principal amount of the Notes in cash upon maturity on May 1, 2014. We will pay 9 5/8% interest per annum on the principal amount of the Notes, payable semi-annually in arrears on May 1 and November 1 of each year, starting on November 1, 2006 to holders of record at the close of business on the preceding April 15 and October 15, respectively.

     We intend to use a portion of the net proceeds from the private placement of the Notes to repay all borrowings outstanding under our senior credit agreement and to completely discharge outstanding indebtedness under, and to terminate, our subordinated credit agreement with The Royal Bank of Scotland plc.

     The Notes are our unsecured senior obligations, and will:

• rank equally in right of payment will all our existing and future senior indebtedness;

• rank senior to all of our future subordinated indebtedness; and,

• be effectively junior in right of payment to all of our and the Gurantors’ existing and future secured indebtedness, including debt of our senior credit agreement.

     Except as set forth below, we will not be entitled to redeem the Notes prior to May 1, 2010. On and after May 1, 2010, we will be entitled to redeem all or a portion of the Notes at the

redemption prices, plus accrued interest to the redemption date, if redeemed during the 12-month period commencing on May 1 of the years set forth below:

Period	Redemption Price
2010		104.813	%
2011		102.406	%
2012 and thereafter		100.000	%

     At any time prior to May 1, 2009, we may use the net proceeds from one or more equity offerings to redeem up to an aggregate of 35% of the aggregate principal amount of the Notes issued under the Indenture (including the principal amount of any additional Notes issued under the Indenture) at a redemption price of 109.625% of the principal amount of the Notes plus any accrued and unpaid interest, if any, to the redemption date, subject to certain conditions.

     If we experience a Change of Control (as defined in the Indenture), we will be required to make an offer to repurchase the Notes at a price equal to 101% of the principal amount thereof, plus accrued and unpaid interest to the date of repurchase.

     The Indenture restricts our ability and the ability of our restricted subsidiaries to:

·	incur additional debt;	·	engage in sale and leaseback transactions;
·	pay dividends on, or redeem or repurchase stock;	·	restrict dividends or other payment from subsidiaries,
·	create liens;	·	merge or consolidate;
·	make specified types of investments;	·	sell equity interests of subsidiaries; and
·	apply net proceeds from certain asset sales;	·	sell, assign, transfer, lease, convey or dispose of assets.
·	engage in transactions with our affiliates;

     These covenants are subject to a number of important exceptions and qualifications.

     The Notes are included herein as Exhibits 4.3 and 4.4 and are incorporated herein by reference. The forgoing description of the Notes does not purport to be complete and is qualified in its entirety by reference to such document.

     The Notes are fully and unconditionally guaranteed by the Guarantors. On April 20, 2006, the Guarantors delivered Notations of Guarantee evidencing their obligation to guarantee the Notes. The Guarantees are included herein as Exhibit 4.2 and are incorporated herein by reference. The foregoing description of the Guarantees does not purpose to be complete and is qualified in its entirety by reference to such document.

     Also effective April 10, 2006, we entered into the First Amendment to our Fourth Amended and Restated Credit Agreement dated June 29, 2005 with the lenders party thereto, Banc of America Securities LLC, as Lead Arranger, Bank of America, N.A., administrative agent and

issuing lender, The Royal Bank of Scotland plc, as co-arranger and documentation agent, BNP Paribas, as co-arranger and syndication agent and two other banks, Hibernia National Bank and Natexas Banques Populaires. The First Amendment, among other things, reduced the borrowing base for our senior credit agreement to $50 million and our banks consented to our issuance of the Notes.

Item 9.01. Financial Statements and Exhibits.

     (d) Exhibits:

Exhibit
Number		Description
	4.1	Indenture dated as of April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and Wells Fargo Bank, N.A., as trustee.
	4.2	Notations of Guarantees dated as of April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and Wells Fargo Bank, N.A., as trustee.
	4.3	Rule 144A 9 5/8% Senior Notes due 2014.
	4.4	Reg S 9 5/8% Senior Notes due 2014.
	10.1	Purchase Agreement dated April 12, 2006, among Brigham Exploration Company, the Guarantors named therein and the Initial Purchasers named therein.
	10.2	Registration Rights Agreement dated April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and the Initial Purchasers named therein.
	10.3	First Amendment to Fourth Amended and Restated Credit Agreement, between Brigham Exploration Company and the banks named therein, dated April 10, 2006.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	BRIGHAM EXPLORATION COMPANY
Date: April 24, 2006	By:	/s/ Eugene B. Shepherd, Jr.
		Eugene B. Shepherd, Jr.
		Executive Vice President & Chief Financial Officer

INDEX TO EXHIBITS

Exhibit
Number		Description
	4.1	Indenture dated as of April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and Wells Fargo Bank, N.A., as trustee.
	4.2	Notations of Guarantees dated as of April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and Wells Fargo Bank, N.A., as trustee.
	4.3	Rule 144A 9 5/8% Senior Notes due 2014.
	4.4	Reg S 9 5/8% Senior Notes due 2014.
	10.1	Purchase Agreement dated April 12, 2006, among Brigham Exploration Company, the Guarantors named therein and the Initial Purchasers named therein.
	10.2	Registration Rights Agreement dated April 20, 2006, among Brigham Exploration Company, the Guarantors named therein and the Initial Purchasers named therein.
	10.3	First Amendment to Fourth Amended and Restated Credit Agreement, between Brigham Exploration Company and the banks named therein, dated April 10, 2006.

EX-4.1

EXHIBIT 4.1

BRIGHAM EXPLORATION COMPANY, as Issuer,

BRIGHAM, INC. and BRIGHAM OIL & GAS, L.P., as Guarantors,

and

WELLS FARGO BANK, N.A., as Trustee

INDENTURE

Dated as of April 20, 2006

9 ⁵/₈% Senior Notes due 2014

CROSS-REFERENCE TABLE*

TRUST INDENTURE		INDENTURE SECTION
ACT SECTION
310	(a)(1)		7.10
	(a)(2)		7.10
	(a)(3)		N.A.
	(a)(4)		N.A.
	(a)(5)		7.10
	(b)		7.10
	(c)		N.A.
311	(a)		7.11
	(b)		7.11
	(c)		N.A.
312	(a)		2.06
	(b)		12.03
	(c)		12.03
313	(a)		7.06 (a)
	(b)(1)		N.A.
	(b)(2)		7.06( a)
	(c)		7.06(a), 12.02
	(d)		7.06 (b)
314	(a)		4.04 (b)
	(a)(4)		12.05 (a)
	(b)		N.A.
	(c)(1)		N.A.
	(c)(2)		N.A.
	(c)(3)		N.A.
	(d)		N.A.
	(e)		12.05 (a)
	(f)		N.A.
315	(a)		N.A.
	(b)		N.A.
	(c)		N.A.
	(d)		N.A.
	(e)		N.A.
316	(a)(last sentence)		N.A.
	(a)(1)(A)		N.A.
	(a)(1)(B)		6.04
	(a)(2)		N.A.
	(b)		N.A.
	(c)		12.14 (d)
317	(a)(1)		N.A.
	(a)(2)		N.A.
	(b)		N.A.
318	(a)		N.A.

i

TRUST INDENTURE		INDENTURE SECTION
ACT SECTION
	(b)		N.A.
	(c)		12.10

	N.A. means not applicable.
*	This Cross-Reference Table is not part of the Indenture.

ii

TABLE OF CONTENTS

CROSS-REFERENCE TABLE	i
ARTICLE ONE DEFINITIONS AND INCORPORATION BY REFERENCE	1
Section 1.01. Definitions	1
Section 1.02. Other Definitions	32
Section 1.03. Incorporation by Reference of Trust Indenture Act	33
Section 1.04. Rules of Construction	33
ARTICLE TWO THE NOTES	33
Section 2.01. Form and Dating	33
Section 2.02. Execution and Authentication	35
Section 2.03. Methods of Receiving Payments on the Notes	36
Section 2.04. Registrar and Paying Agent	36
Section 2.05. Paying Agent to Hold Money in Trust	36
Section 2.06. Holder Lists	37
Section 2.07. Transfer and Exchange	37
Section 2.08. Replacement Notes	52
Section 2.09. Outstanding Notes	52
Section 2.10. Treasury Notes	52
Section 2.11. Temporary Notes	53
Section 2.12. Cancellation	53
Section 2.13. Defaulted Interest	53
Section 2.14. CUSIP Numbers	53
Section 2.15. Additional Interest	54
Section 2.16. Issuance of Additional Notes	54
ARTICLE THREE REDEMPTION AND PREPAYMENT	54
Section 3.01. Notices to Trustee	54
Section 3.02. Selection of Notes to Be Redeemed	55
Section 3.03. Notice of Redemption	55
Section 3.04. Effect of Notice of Redemption	56
Section 3.05. Deposit of Redemption Price	56
Section 3.06. Notes Redeemed in Part	57
Section 3.07. Optional Redemption	57
Section 3.08. Mandatory Redemption	57
Section 3.09. Application of Trust Money	58
ARTICLE FOUR COVENANTS	58
Section 4.01. Payment of Notes	58
Section 4.02. Maintenance of Office or Agency	58

iii

Section 4.03. Reports	59
Section 4.04. Compliance Certificate	59
Section 4.05. Taxes	60
Section 4.06. Stay, Extension and Usury Laws	60
Section 4.07. Incurrence of Indebtedness and Issuance of Disqualified Stock	60
Section 4.08. Restricted Payments	63
Section 4.09. Transactions with Affiliates	67
Section 4.10. Liens	68
Section 4.11. Asset Sales	69
Section 4.12. Issuances of Guarantees by Restricted Subsidiaries	72
Section 4.13. Limitation on Issuances and Sales of Preferred Stock of Restricted Subsidiaries	73
Section 4.14. Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries	73
Section 4.15. Sale Leaseback Transactions	75
Section 4.16. Lines of Business	76
Section 4.17. Restrictions on Limited Partners	76
Section 4.18. Unrestricted Subsidiaries	76
Section 4.19. Payments for Consent	78
Section 4.20. Offer to Repurchase upon a Change of Control	78
Section 4.21. Corporate Existence	80
ARTICLE FIVE SUCCESSORS	81
Section 5.01. Consolidation, Merger and Sale of Assets	81
ARTICLE SIX DEFAULTS AND REMEDIES	83
Section 6.01. Events of Default	83
Section 6.02. Acceleration	85
Section 6.03. Other Remedies	86
Section 6.04. Waiver of Past Defaults	86
Section 6.05. Control by Majority	87
Section 6.06. Limitation on Suits	87
Section 6.07. Rights of Holders of Notes to Receive Payment	87
Section 6.08. Collection Suit by Trustee	88
Section 6.09. Trustee May File Proofs of Claim	88
Section 6.10. Priorities	88
Section 6.11. Undertaking for Costs	89
ARTICLE SEVEN TRUSTEE	89
Section 7.01. Duties of Trustee	89
Section 7.02. Certain Rights of Trustee	90
Section 7.03. Individual Rights of Trustee	91
Section 7.04. Trustee’s Disclaimer	91
Section 7.05. Notice of Default	92
Section 7.06. Reports by Trustee to Holders of the Notes	92

iv

Section 7.07. Compensation and Indemnity	92
Section 7.08. Replacement of Trustee	93
Section 7.09. Successor Trustee by Merger, Etc.	94
Section 7.10. Eligibility; Disqualification	94
Section 7.11. Preferential Collection of Claims Against Company	94
ARTICLE EIGHT DEFEASANCE AND COVENANT DEFEASANCE	95
Section 8.01. Option to Effect Legal Defeasance or Covenant Defeasance	95
Section 8.02. Legal Defeasance and Discharge	95
Section 8.03. Covenant Defeasance	95
Section 8.04. Conditions to Legal Defeasance or Covenant Defeasance	96
Section 8.05. Deposited Money and U.S. Government Obligations to Be Held in Trust; Other Miscellaneous Provisions	97
Section 8.06. Repayment to the Company	98
Section 8.07. Reinstatement	98
ARTICLE NINE AMENDMENT, SUPPLEMENT AND WAIVER	99
Section 9.01. Without Consent of Holders of Notes	99
Section 9.02. With Consent of Holders of Notes	100
Section 9.03. Compliance with Trust Indenture Act	102
Section 9.04. Revocation and Effect of Consents	102
Section 9.05. Notation on or Exchange of Notes	102
Section 9.06. Trustee to Sign Amendments, Etc	102
ARTICLE TEN GUARANTEES	102
Section 10.01. Guarantee	102
Section 10.02. Limitation on Guarantor Liability	104
Section 10.03. Execution and Delivery of Guarantee	104
Section 10.04. Releases of Guarantors	105
ARTICLE ELEVEN SATISFACTION AND DISCHARGE	106
Section 11.01. Satisfaction and Discharge	106
Section 11.02. Deposited Money and U.S. Government Obligations to Be Held in Trust; Other Miscellaneous Provisions	107
Section 11.03. Repayment to the Company	107
ARTICLE TWELVE MISCELLANEOUS	107
Section 12.01. No Adverse Interpretation of Other Agreements	107
Section 12.02. Notices	108
Section 12.03. Communication by Holders of Notes with Other Holders of Notes	109
Section 12.04. Certificate and Opinion as to Conditions Precedent	109
Section 12.05. Statements Required in Certificate or Opinion	109

v

Section 12.06. Rules by Trustee and Agents	110
Section 12.07. No Personal Liability of Directors, Officers, Employees and Stockholders	110
Section 12.08. Governing Law	110
Section 12.09. Consent to Jurisdiction	110
Section 12.10. Trust Indenture Act Controls	110
Section 12.11. Successors	111
Section 12.12. Severability	111
Section 12.13. Counterpart Originals	111
Section 12.14. Acts of Holders	111
Section 12.15. Benefit of Indenture	112
Section 12.16. Table of Contents, Headings, Etc.	112

Exhibits:
Exhibit A1	FORM OF NOTE
Exhibit A2	FORM OF REGULATION S TEMPORARY GLOBAL NOTE
Exhibit B	FORM OF CERTIFICATE OF TRANSFER
Exhibit C	FORM OF CERTIFICATE OF EXCHANGE
Exhibit D	FORM OF CERTIFICATE OF ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR
Exhibit E	FORM OF NOTATION OF GUARANTEE
Exhibit F	FORM OF GUARANTOR SUPPLEMENTAL INDENTURE TO BE DELIVERED BY GUARANTORS
Exhibit G	FORM OF INTERCOMPANY NOTE

vi

          INDENTURE (this “Indenture”), dated as of April 20, 2006, among Brigham Exploration Company, a Delaware corporation (the “Company”), Brigham, Inc., a Nevada corporation, Brigham Oil & Gas, L.P., a Delaware limited partnership (“BOG LP” and, together with Brigham, Inc., the “Initial Guarantors”) and Wells Fargo Bank, N.A., as trustee (the “Trustee”).

          The Company, the Initial Guarantors and the Trustee agree as follows for the benefit of each other and for the equal and ratable benefit of the Holders (as defined below) of the 9⅝% Senior Notes due 2014 (the “Initial Notes” and, together with any Exchange Notes and Additional Notes, each as defined herein, the “Notes”):

ARTICLE ONE
Definitions and Incorporation
by Reference

Section 1.01. Definitions.

          “144A Global Note” means a global note substantially in the form of Exhibit A1 hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of, and registered in the name of, the Depositary or its nominee that shall be issued in a denomination equal to the outstanding principal amount at maturity of the Notes sold in reliance on Rule 144A.

          “Acquired Debt” means Indebtedness of a Person (1) existing at the time such Person becomes a Restricted Subsidiary or (2) assumed in connection with the acquisition of assets from such Person, in each case, other than Indebtedness incurred in connection with, or in contemplation of, such Person becoming a Restricted Subsidiary or such acquisition, as the case may be. Acquired Debt shall be deemed to be incurred on the date of the related acquisition of assets from any Person or the date the acquired Person becomes a Restricted Subsidiary, as the case may be.

          “Additional Assets” means (i) any assets or property (other than cash, Cash Equivalents or securities) used in the Oil and Gas Business or any business ancillary thereto, (ii) Investments in any other Person engaged in the Oil and Gas Business or any business ancillary thereto (including the acquisition from third parties of Capital Stock of such Person) as a result of which such other Person becomes a Restricted Subsidiary, (iii) the acquisition from third parties of Capital Stock of a Restricted Subsidiary or (iv) Permitted Business Investments.

          “Additional Interest” means any additional interest payable pursuant to a Registration Rights Agreement.

          “Additional Notes” means any further Notes (other than the Initial Notes issued on the date of this Indenture) issued under this Indenture in accordance with the terms of this Indenture, including Sections 2.01(e), 2.02, 2.16 and 4.07 hereof, as part of the same series as the Initial Notes issued on the date hereof, ranking equally with those Initial Notes and having identical terms and conditions to the Initial Notes (in all respects other than (a) the date of issuance, (b) the issue price, (c) rights under a related Registration Rights Agreement, if any, (d)

at the option of the Company, as to the payment of interest accruing prior to the issue date of such Additional Notes, and (e) the first payment of interest following the issue date of such Additional Notes), subject to compliance with Article Four hereof. The Initial Notes, any Additional Notes subsequently issued under this Indenture and all Exchange Notes issued in exchange therefor shall be treated as a single class for all purposes under this Indenture, including, without limitation, directions, waivers, amendments, consents, redemptions and offers to purchase.

          “Adjusted Consolidated Net Tangible Assets” means (without duplication), as of the date of determination, the remainder of:

          (i) the sum of

     (a) discounted future net revenues from proved oil and gas reserves of the Company and its Restricted Subsidiaries calculated in accordance with (and deducting estimated production and development costs as required by) Commission guidelines before any state, federal or foreign income taxes, as estimated by the Company and confirmed by a nationally recognized firm of independent petroleum engineers in a reserve report prepared as of the end of the Company’s most recently completed fiscal year, as increased by, as of the date of determination, the estimated discounted future net revenues from (1) estimated proved oil and gas reserves acquired since such year-end, which reserves were not reflected in such year-end reserve report, and (2) estimated increases in proved oil and gas reserves since such year-end due to exploration, development or exploitation activities or due to changes in geological conditions or other factors which would, in accordance with standard industry practice, cause such revisions, in each case calculated in accordance with Commission guidelines (utilizing the prices utilized in such year-end reserve report), and decreased by, as of the date of determination, the estimated discounted future net revenues from (3) estimated proved oil and gas reserves produced or disposed of since such year-end and (4) estimated oil and gas reserves attributable to downward revisions of estimates of proved oil and gas reserves since such year-end due to changes in geological conditions or other factors which would, in accordance with standard industry practice, cause such revisions, in each case calculated in accordance with Commission guidelines (utilizing the prices utilized in such yearend reserve report); provided that, in the case of each of the determinations made pursuant to clauses (1) through (4), such increases and decreases shall be as estimated by the Company’s petroleum engineers, unless there is a Material Change as a result of such acquisitions, dispositions or revisions, in which event the discounted future net revenues utilized for purposes of this clause (i)(a) shall be confirmed in writing by a nationally recognized firm of independent petroleum engineers,

     (b) the capitalized costs that are attributable to oil and gas properties of the Company and its Restricted Subsidiaries to which no proved oil and gas reserves are attributable, based on the Company’s books and records as of a date no earlier than the date of the Company’s latest annual or quarterly financial statements,

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     (c) the Net Working Capital on a date no earlier than the date of the Company’s latest annual or quarterly financial statements, and

     (d) the greater of (1) the net book value on a date no earlier than the date of the Company’s latest annual or quarterly financial statements and (2) the appraised value, as estimated by independent appraisers, of other tangible assets (including, without duplication, Investments in unconsolidated Restricted Subsidiaries) of the Company and its Restricted Subsidiaries, as of the date no earlier than the date of the Company’s latest audited financial statements,

minus (ii) the sum of

     (a) minority interests,

     (b) any net gas balancing liabilities of the Company and its Restricted Subsidiaries as estimated as of the effective date of the reserve report referred to in (i)(a) above,

     (c) to the extent included in (i)(a) above, the discounted future net revenues, calculated in accordance with Commission guidelines (utilizing the prices utilized in the Company’s year-end reserve report), attributable to reserves which are required to be delivered to third parties to fully satisfy the obligations of the Company and its Restricted Subsidiaries with respect to Volumetric Production Payments (determined, if applicable, using the schedules specified with respect thereto), and

     (d) the discounted future net revenues, calculated in accordance with Commission guidelines, attributable to reserves subject to Dollar-Denominated Production Payments which, based on the estimates of production and price assumptions included in determining the discounted future net revenues specified in (i)(a) above, would be necessary to fully satisfy the payment obligations of the Company and its Restricted Subsidiaries with respect to Dollar-Denominated Production Payments (determined, if applicable, using the schedules specified with respect thereto).

          If the Company changes its method of accounting from the full cost method to the successful efforts method or another method of accounting, “Adjusted Consolidated Net Tangible Assets” will continue to be calculated as if the Company were still using the full cost method of accounting.

          “Affiliate” means, with respect to any specified Person: (1) any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person; (2) any other Person that owns, directly or indirectly, 10% or more of the Voting Stock of such specified Person (or 10% or more of any of such specified Person’s direct or indirect parent’s Voting Stock), or any executive officer or director of any such specified Person or any such other Person or, with respect to any natural Person, any person having a relationship with such Person by blood, marriage or adoption not more remote than first cousin; or (3) any other Person 10% or more of the Voting Stock of which is beneficially owned or held

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directly or indirectly by such specified Person. For the purposes of this definition, “control” when used with respect to any specified Person means the power to direct the management and policies of such Person, directly or indirectly, whether through ownership of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings correlative to the foregoing.

          “Agent” means any Registrar, Paying Agent or co-registrar.

          “Applicable Procedures” means, with respect to any transfer or exchange of or for beneficial interests in any Global Note, the rules and procedures of the Depositary, Euroclear and Clearstream that apply to such transfer or exchange.

          “Asset Sale” means any sale, issuance, conveyance, transfer, lease or other disposition (including, without limitation, by way of merger or consolidation or sale and leaseback transaction) (collectively, a “transfer”), directly or indirectly, in one or a series of related transactions, of:

     (1) any Capital Stock of any Restricted Subsidiary;

     (2) all or substantially all of the properties and assets of any division or line of business of the Company or any Restricted Subsidiary; or

     (3) any other properties, assets or rights of the Company or any Restricted Subsidiary other than in the ordinary course of business.

     For the purposes of this definition, the term “Asset Sale” shall not include:

     (A) any transfer of properties and assets that is governed by the provisions described under “Consolidation, Merger and Sale of Assets,”

     (B) any transfer of properties and assets that is by the Company to any Restricted Subsidiary, or by any Restricted Subsidiary to the Company or any other Restricted Subsidiary in accordance with the terms of this Indenture,

     (C) any transfer of properties and assets that would be within the definition of a “Restricted Payment” under Section 4.08 hereof and would be permitted to be made as a Restricted Payment (and shall be deemed a Restricted Payment) under Section 4.08 hereof,

     (D) the disposition of Cash Equivalents, inventory, accounts receivable, surplus or obsolete equipment or other similar property (excluding the disposition of oil and gas in place and other interests in real property unless made in connection with a Permitted Business Investment),

     (E) the abandonment, assignment, lease, sublease or farm-out of oil and gas properties, or the forfeiture or other disposition of such properties, pursuant to operating agreements or other instruments or agreement that, in each case, are entered into in a manner that is customary in the Oil and Gas Business,

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     (F) the disposition of Property received in settlement of debts owing to such Person as a result of foreclosure, perfection or enforcement of any Lien or debt, which debts were owing to such Person,

     (G) any Production Payments and Reserve Sales, provided that any such Production Payments and Reserve Sales (other than incentive compensation programs on terms that are reasonably customary in the Oil and Gas Business for geologists, geophysicists and other providers of technical services to the Company or a Restricted Subsidiary), shall have been created, incurred, issued, assumed or guaranteed in connection with the acquisition or financing of, and within 60 days after the acquisition of, the Property that is subject thereto,

     (H) the licensing or sublicensing of intellectual property or other general intangibles to the extent that such license does not prohibit the licensor from using the intellectual property and licenses, leases or subleases of other property,

     (I) the creation or incurrence of any Lien,

     (J) the surrender or waiver of contract rights or the settlement, release or surrender of contract, tort or other claims of any kind, or

     (K) any transfer of properties (in any transaction or series of related transactions) the Fair Market Value of which in the aggregate does not exceed $2.0 million.

          “Attributable Indebtedness” in respect of a Sale Leaseback Transaction means, at the time of determination, the present value (discounted at the rate of interest implicit in such transaction, determined in accordance with GAAP) of the obligation of the lessee for net rental payments during the remaining term of the lease included in such Sale Leaseback Transaction (including any period for which such lease has been extended or may, at the option of the lessor, be extended).

          “Bankruptcy Law” means Title 11, United States Bankruptcy Code of 1978, as amended, or any similar United States federal or state law or foreign law relating to bankruptcy, insolvency, receivership, winding up, liquidation, reorganization or relief of debtors or any amendment to, succession to or change in any such law.

          “Beneficial Owner” has the meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act), such “person” shall be deemed to have beneficial ownership of all such shares that such “person” has the right to acquire, whether such right is exercisable immediately or only after the passage of time. The term “Beneficial Ownership” shall have a corresponding meaning.

          “Board of Directors” means, with respect to any Person, the board of directors, management committee or other equivalent management entity of such Person or any committee thereof duly authorized to act on behalf of such board or, in the case of a Person that is a partnership that has no such management entity, one or more general partners of such Person.

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          “Board Resolution” means, with respect to a Board of Directors, a copy of a resolution certified by the Secretary or an Assistant Secretary of the Person or, in the case of a Person that is a partnership that has no such officers, the Secretary or an Assistant Secretary of a general partner of such Person, to have been duly adopted by such Board of Directors and to be in full force and effect on the date of such certification, and delivered to the Trustee.

          “BOG LP” means Brigham Oil & Gas, L.P., a Delaware limited partnership and an indirect Wholly Owned Restricted Subsidiary of the Company.

          “Broker-Dealer” has the meaning set forth in the Registration Rights Agreement.

          “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in both New York and the city in which the Corporate Trust Office of the Trustee is located (which shall be in Minneapolis, Minnesota as of the Issue Date) are authorized or obligated by law or executive order to close.

          “Capital Lease Obligation” of any Person means any obligation of such Person and its Restricted Subsidiaries on a Consolidated basis under any capital lease of (or other agreement conveying the right to use) real or personal property which, in accordance with GAAP, is required to be recorded as a capitalized lease obligation.

          “Capital Stock” of any Person means any and all shares, units, interests, participations, rights in or other equivalents (however designated) of such Person’s capital stock, other equity interests whether now outstanding or issued after the date of this Indenture, partnership interests (whether general or limited), limited liability company interests, any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person, including any Preferred Stock, and any rights (other than debt securities convertible into Capital Stock), warrants or options exchangeable for or convertible into such Capital Stock.

          “Cash Equivalents” means

     (1) any evidence of Indebtedness issued or directly and fully guaranteed or insured by the United States or any agency or instrumentality thereof,

     (2) deposits, time deposit accounts, certificates of deposit, money market deposits or acceptances of any financial institution having capital and surplus in excess of $500 million that is a member of the Federal Reserve System and whose senior unsecured debt is rated at least “A-1” by S&P, or at least “P-1” by Moody’s,

     (3) commercial paper with a maturity of 365 days or less issued by a corporation (other than an Affiliate or Subsidiary of the Company) organized and existing under the laws of the United States of America, any state thereof or the District of Columbia and rated at least “A-1” by S&P and at least “P1” by Moody’s,

     (4) repurchase agreements and reverse repurchase agreements relating to Indebtedness of a type described in clause (1) above that are entered into with a financial

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institution described in clause (2) above and mature within 365 days from the date of acquisition, and

     (5) money market funds which invest substantially all of their assets in securities described in the preceding clauses (1) through (4).

     “Change of Control” means the occurrence of any of the following events:

     (1) any “person” or “group” (as such terms are used in Sections 13(d) and 14(d) of the Exchange Act) is or becomes the Beneficial Owner, directly or indirectly, of more than 50% of the total outstanding Voting Stock of the Company (measured by voting power rather than the number of shares);

     (2) during any period of two consecutive years, individuals who at the beginning of such period constituted the Board of Directors of the Company (together with any new directors whose election to such board or whose nomination for election by the stockholders of the Company was approved by a vote of 66⅔% of the directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved), cease for any reason to constitute a majority of such Board of Directors then in office;

     (3) the Company consolidates with or merges with or into any Person, or sells, assigns, conveys, transfers, leases or otherwise disposes of all or substantially all of its assets to any such Person, or any such Person consolidates with or merges into or with the Company, in any such event pursuant to a transaction in which the outstanding Voting Stock of the Company is converted into or exchanged for cash, securities or other property, other than any such transaction where

     (A) the outstanding Voting Stock of the Company is changed into or exchanged for (1) Voting Stock of the surviving Person which is not Disqualified Stock or (2) cash, securities and other property (other than Capital Stock of the surviving Person) in an amount which could be paid by the Company as a Restricted Payment under Section 4.08 hereof (and such amount shall be treated as a Restricted Payment subject to the provisions of Section 4.08 hereof) and

     (B) immediately after such transaction, no “person” or “group” (as such terms are used in Sections 13(d) and 14(d) of the Exchange Act) is the Beneficial Owner, directly or indirectly, of more than 50% of the total outstanding Voting Stock (measured by voting power rather than the number of shares) of the surviving Person; or

     (4) the Company is liquidated or dissolved or adopts a plan of liquidation or dissolution other than in a transaction which complies with Section 5.01 hereof.

          For purposes of this definition, any transfer of an equity interest of an entity that was formed for the purpose of acquiring Voting Stock of the Company will be deemed to be a transfer of such portion of such Voting Stock as corresponds to the portion of the equity of such entity that has been so transferred.

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          “Clearstream” means Clearstream Banking, societe anonyme, Luxembourg.

          “Commission” means the Securities and Exchange Commission, as from time to time constituted, created under the Exchange Act, or if at any time after the execution of this Indenture such Commission is not existing and performing the duties now assigned to it under the Securities Act and the Exchange Act, then the body performing such duties at such time.

          “Company” means Brigham Exploration Company, a Delaware corporation, until a successor Person shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Company” shall mean such successor Person.

          “Consolidated Fixed Charge Coverage Ratio” of any Person means, for any period, the ratio of

     (a) without duplication, the sum of Consolidated Net Income (Loss), and in each case to the extent deducted in computing Consolidated Net Income (Loss) for such period, Consolidated Interest Expense, Consolidated Income Tax Expense and Consolidated Non-cash Charges for such period, of such Person and its Restricted Subsidiaries on a Consolidated basis, all determined in accordance with GAAP, less all non-cash items increasing Consolidated Net Income for such period and less all cash payments during such period relating to non-cash charges that were added back to Consolidated Net Income in determining the Consolidated Fixed Charge Coverage Ratio in any prior period to

     (b) without duplication, the sum of Consolidated Interest Expense for such period and any cash dividends paid on any Disqualified Stock or Preferred Stock of such Person and its Restricted Subsidiaries during such period,

in each case after giving pro forma effect (as calculated in accordance with Article 11 of Regulation S-X under the Securities Act or any successor provision) to, without duplication,

     (1) the incurrence of the Indebtedness giving rise to the need to make such calculation and (if applicable) the application of the net proceeds therefrom, including to refinance other Indebtedness, as if such Indebtedness was incurred, and the application of such proceeds occurred, on the first day of such period;

     (2) the incurrence, repayment or retirement of any other Indebtedness by the Company and its Restricted Subsidiaries since the first day of such period as if such Indebtedness was incurred, repaid or retired at the beginning of such period (except that, in making such computation, the amount of Indebtedness under any revolving credit facility shall be computed based upon the average daily balance of such Indebtedness during such period);

     (3) in the case of Acquired Debt or any acquisition occurring at the time of the incurrence of such Indebtedness, the related acquisition, assuming such acquisition had been consummated on the first day of such period; and

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     (4) any acquisition or disposition by the Company and its Restricted Subsidiaries of any company or any business or any assets out of the ordinary course of business, whether by merger, stock purchase or sale or asset purchase or sale, or any related repayment of Indebtedness, in each case since the first day of such period, assuming such acquisition or disposition had been consummated on the first day of such period;

provided that

     (1) in making such computation, the Consolidated Interest Expense attributable to interest on any Indebtedness computed on a pro forma basis and (A) bearing a floating interest rate shall be computed as if the rate in effect on the date of computation had been the applicable rate for the entire period and (B) which was not outstanding for any part of the period for which the computation is being made but which bears, at the option of such Person, a fixed or floating rate of interest, shall be computed by applying at the option of such Person either the fixed or floating rate, and

     (2) in making such computation, the Consolidated Interest Expense of such Person attributable to interest on any Indebtedness under a revolving credit facility computed on a pro forma basis shall be computed based upon the average daily balance of such Indebtedness during the applicable period.

     “Consolidated Income Tax Expense” of any Person means, for any period, the provision for federal, state, local and foreign income taxes (including state franchise taxes accounted for as income taxes in accordance with GAAP) of such Person and its Consolidated Restricted Subsidiaries for such period as determined in accordance with GAAP.

     “Consolidated Interest Expense” of any Person means, without duplication, for any period, the sum of

     (a) the interest expense, less interest income, of such Person and its Restricted Subsidiaries for such period, on a Consolidated basis, including, without limitation,

     (1) amortization of debt discount (excluding amortization of capitalized debt issuance costs),

     (2) the net cash costs associated with Interest Rate Agreements (including amortization of discounts),

     (3) the interest portion of any deferred payment obligation,

     (4) all commissions, discounts and other fees and charges owed with respect to letters of credit and bankers acceptance financing, and

     (5) accrued interest, plus

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     (b) (1) the interest component of the Capital Lease Obligations paid, accrued and/or scheduled to be paid or accrued by such Person and its Restricted Subsidiaries during such period, and

     (2) all capitalized interest of such Person and its Restricted Subsidiaries plus

     (c) the interest expense under any Guaranteed Debt of such Person and any Restricted Subsidiary to the extent not included under any other clause hereof, whether or not paid by such Person or its Restricted Subsidiaries, plus

     (d) dividend requirements of the Company with respect to Disqualified Stock and of any Restricted Subsidiary with respect to Preferred Stock (except, in either case, dividends payable solely in shares of Qualified Capital Stock of the Company or such Restricted Subsidiary, as the case may be).

     “Consolidated Net Income (Loss)” of any Person means, for any period, the Consolidated net income (or loss) of such Person and its Restricted Subsidiaries for such period on a Consolidated basis as determined in accordance with GAAP, adjusted, to the extent included in calculating such net income (or loss), by excluding, without duplication,

     (1) all extraordinary gains or losses net of taxes (less all fees and expenses relating thereto),

     (2) the portion of net income (or loss) of such Person and its Restricted Subsidiaries on a Consolidated basis allocable to minority interests in unconsolidated Persons or Unrestricted Subsidiaries to the extent that cash dividends or distributions have not actually been received by such Person or one of its Consolidated Restricted Subsidiaries,

     (3) any gain or loss, net of taxes, realized upon the termination of any employee pension benefit plan,

     (4) gains or losses, net of taxes (less all fees and expenses relating thereto), in respect of dispositions of assets other than in the ordinary course of the Oil and Gas Business (excluding, without limitation, from the calculation of Consolidated Net Income (Loss) dispositions pursuant to sale and leaseback transactions, but not excluding from such calculation transactions such as farmouts, sales of leasehold inventory, sales of undivided interests in drilling prospects, and sales or licenses of seismic data or other geological or geophysical data or interpretations thereof),

     (5) the net income of any Restricted Subsidiary to the extent that the declaration of dividends or similar distributions by that Restricted Subsidiary of that income is not at the time permitted, directly or indirectly, by operation of the terms of its charter or any agreement, instrument, judgment, decree, order, statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders,

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          (6) any write-downs of non-current assets, provided that any ceiling limitation write-downs under Commission guidelines shall be treated as capitalized costs, as if such write-downs had not occurred,

          (7) any cumulative effect of a change in accounting principles,

          (8) any unrealized noncash gains or losses on charges in respect of hedging obligations, including those resulting from the application of Statement of Financial Accounting Standards No. 133, “Accounting for Derivative Instruments and Hedging Activities,”

          (9) any non-cash compensation charge arising from the grant of or issuance of stock, stock options or other equity based awards, and

          (10) all deferred financing costs written off, and premiums paid, in connection with any early extinguishment of Indebtedness.

          “Consolidated Net Worth” of any Person means, at any time, for such Person and its Restricted Subsidiaries on a consolidated basis, an amount equal to (a) the consolidated assets of the Person and its Restricted Subsidiaries minus (b) the consolidated liabilities of the Person and its Restricted Subsidiaries at that time.

          “Consolidated Non-cash Charges” of any Person means, for any period, the aggregate depreciation, depletion, amortization and exploration expense and other non-cash charges of such Person and its Subsidiaries on a Consolidated basis for such period, as determined in accordance with GAAP (excluding any non-cash charge (other than a charge for future obligations with respect to the abandonment or retirement of assets) which requires an accrual or reserve for cash charges for any future period.

          “Consolidation” means, with respect to any Person, the consolidation of the accounts of such Person and each of its Subsidiaries if and to the extent the accounts of such Person and each of its Subsidiaries would normally be consolidated with those of such Person, all in accordance with GAAP. The term “Consolidated” shall have a similar meaning.

          “Corporate Trust Office of the Trustee” shall be at the address of the Trustee specified in Section 12.02 hereof or such other address as to which the Trustee may give notice to the Company.

          “Credit Facility” means one or more debt facilities (including, without limitation, the Senior Credit Agreement), commercial paper facilities or other debt instruments, indentures or agreements, providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to such lenders or to special purpose entities formed to borrow from such lenders against such receivables), letters of credit or other debt obligations, in each case, as amended, restated, modified, renewed, refunded, restructured, supplemented, replaced or refinanced from time to time in whole or in part from time to time, including, without limitation, any amendment increasing the amount of Indebtedness incurred or available to be borrowed thereunder, extending the maturity of any Indebtedness incurred thereunder or contemplated

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thereby or deleting, adding or substituting one or more parties thereto (whether or not such added or substituted parties are banks or other institutional lenders).

          “Custodian” means the Trustee, as custodian with respect to the Notes in global form, or any successor entity thereto.

          “Default” means any event which is, or after notice or passage of time or both would be, an Event of Default.

          “Definitive Note” means a certificated Note registered in the name of the Holder thereof and issued in accordance with Section 2.07 hereof, substantially in the form of Exhibit A1 hereto except that such Note shall not bear the Global Note Legend and shall not have the “Schedule of Exchanges of Interests in the Global Note” attached thereto.

          “Depositary” means, with respect to the Notes issuable or issued in whole or in part in global form, the Person specified in Section 2.04 hereof as the Depositary with respect to the Notes, and any and all successors thereto appointed as depositary hereunder and having become such pursuant to the applicable provisions of this Indenture.

          “Disinterested Director” means, with respect to any transaction or series of related transactions, a member of the Board of Directors of the Company who does not have any material direct or indirect financial interest (other than as a shareholder or employee of the Company) in or with respect to such transaction or series of related transactions.

          “Disqualified Stock” means any Capital Stock that, either by its terms or by the terms of any security into which it is convertible or exchangeable or otherwise, is or upon the happening of an event or passage of time would be, required to be redeemed prior to the final Stated Maturity of the principal of the Notes or is redeemable at the option of the holder thereof at any time prior to such final Stated Maturity (other than upon a change of control of or sale of assets by the Company in circumstances where the Holders of the Notes would have similar rights), or is convertible into or exchangeable for debt securities at any time prior to such final Stated Maturity at the option of the holder thereof.

          “Dollar-Denominated Production Payment” means a production payment required to be recorded as a borrowing in accordance with GAAP, together with all undertakings and obligations in connection therewith.

          “Equity Offering” means an underwritten public offering or private placement of common stock (other than Disqualified Stock) of the Company with gross proceeds to the Company of at least $25.0 million..

          “Exchange Act” means the Securities Exchange Act of 1934, as amended, or any successor statute, and the rules and regulations promulgated by the Commission thereunder.

          “Exchange Notes” means the Notes issued in an Exchange Offer in accordance with Section 2.07(f) hereof.

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          “Exchange Offer” means an exchange offer that may be effected pursuant to a Registration Rights Agreement.

          “Exchange Offer Registration Statement” means an Exchange Offer Registration Statement that may be filed pursuant to a Registration Rights Agreement.

          “Exchanged Properties” means properties or assets or Capital Stock representing an equity interest in or assets used or useful in the Oil and Gas Business, received by the Company or a Restricted Subsidiary in a substantially concurrent purchase and sale, trade or exchange as a portion of the total consideration for other such properties or assets.

          “Fair Market Value” means, with respect to any asset or property, the sale value that would be obtained in an arm’s-length free market transaction between an informed and willing seller under no compulsion to sell and an informed and willing buyer under no compulsion to buy. Fair Market Value of an asset or property in excess of $15.0 million (or $5.0 million, in the case of a transaction with an Affiliate of the Company) shall be determined by the Board of Directors of the Company acting in good faith, in which event it shall be evidenced by a Board Resolution of the Board of Directors of the Company.

          “Foreign Subsidiary” means any Restricted Subsidiary of the Company that (x) is not organized under the laws of the United States of America or any State thereof or the District of Columbia, or (y) was organized under the laws of the United States of America or any State thereof or the District of Columbia that has no material assets other than Capital Stock of one or more foreign entities of the type described in clause (x) above and is not a guarantor of Indebtedness under a Credit Facility.

          “Generally Accepted Accounting Principles” or “GAAP” means generally accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board, the Public Company Accounting Oversight Board or in such other statements by such other entity as have been approved by a significant segment of the accounting profession, which are in effect (i) with respect to periodic reporting requirements, from time to time, and (ii) otherwise on the Issue Date.

          “Global Note Legend” means the legend set forth in Section 2.07(g)(ii), which is required to be placed on all Global Notes issued under this Indenture.

          “Global Notes” means, individually and collectively, each of the Restricted Global Notes and the Unrestricted Global Notes, substantially in the form of Exhibit A1 or A2 hereto, as appropriate, issued in accordance with Section 2.01, 2.07(b)(iii), 2.07(b)(iv), 2.07(d)(i), 2.07(d)(ii), or 2.07(d)(iii) of this Indenture.

          “Guarantee” means the guarantee by any Guarantor of the Company’s Indenture Obligations.

          “Guaranteed Debt” of any Person means, without duplication, all Indebtedness of any other Person referred to in the definition of Indebtedness below guaranteed directly or indirectly in any manner by such Person, or in effect guaranteed directly or indirectly by such

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Person through an agreement, made primarily for the purpose of enabling the debtor to make payment of such Indebtedness or to assure the holder of such Indebtedness against loss,

          (1) to pay or purchase such Indebtedness or to advance or supply funds for the payment or purchase of such Indebtedness,

          (2) to purchase, sell or lease (as lessee or lessor) property, or to purchase or sell services,

          (3) to supply funds to, or in any other manner invest in, the debtor (including any agreement to pay for property or services without requiring that such property be received or such services be rendered),

          (4) to maintain working capital or equity capital of the debtor, or otherwise to maintain the net worth, solvency or other financial condition of the debtor or to cause such debtor to achieve certain levels of financial performance or

          (5) otherwise to assure a creditor against loss;

provided that the term “guarantee” shall not include endorsements for collection or deposit, in either case in the ordinary course of business.

          “Guarantor” means each of the Initial Guarantors and any other Subsidiary which is a guarantor of the Notes, including any Person that is required after the date of this Indenture to execute a guarantee of the Notes pursuant to Section 4.12 hereof until a successor replaces such party pursuant to the applicable provisions of this Indenture and, thereafter, shall mean such successor.

          “Holder” means the Person in whose name a Note is, at the time of determination, registered on the Registrar’s books.

          “IAI Global Note” means the global Note substantially in the form of Exhibit A1 hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee that will be issued in a denomination equal to the outstanding principal amount of the Notes sold to Institutional Accredited Investors.

          “Indebtedness” means, with respect to any Person, without duplication,

          (1) all indebtedness of such Person for borrowed money or for the deferred purchase price of property or services, excluding any Trade Accounts Payable and other accrued current liabilities arising in the ordinary course of business, but including, without limitation, all obligations, contingent or otherwise, of such Person in connection with any letters of credit issued under letter of credit facilities, acceptance facilities or other similar facilities,

          (2) all obligations of such Person evidenced by bonds, notes, debentures or other similar instruments,

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     (3) all indebtedness created or arising under any conditional sale or other title retention agreement with respect to property acquired by such Person (even if the rights and remedies of the seller or lender under such agreement in the event of default are limited to repossession or sale of such property), but excluding trade payables arising in the ordinary course of business,

     (4) all obligations under or in respect of currency exchange contracts, oil, gas or other hydrocarbon price hedging arrangements and Interest Rate Agreements of such Person (the amount of any such obligations to be equal at any time to the termination value of such agreement or arrangement giving rise to such obligation that would be payable by such Person at such time),

     (5) all Capital Lease Obligations of such Person,

     (6) the Attributable Indebtedness related to any Sale Leaseback Transaction,

     (7) all Indebtedness referred to in clauses (1) through (6) above of other Persons and all dividends of other Persons, to the extent the payment of such Indebtedness or dividends is secured by (or for which the holder of such Indebtedness has an existing right, contingent or otherwise, to be secured by) any Lien, upon or with respect to property (including, without limitation, accounts and contract rights) owned by such Person, even though such Person has not assumed or become liable for the payment of such Indebtedness,

     (8) all Guaranteed Debt of such Person,

     (9) all Disqualified Stock issued by such Person valued at the greater of its voluntary or involuntary maximum fixed repurchase price plus accrued and unpaid dividends,

     (10) Preferred Stock of any Restricted Subsidiary of the Company or any Guarantor, and

     (11) any amendment, supplement, modification, deferral, renewal, extension, refunding or refinancing of any liability of the types referred to in clauses (1) through (10) above.

For purposes hereof, the “maximum fixed repurchase price” of any Disqualified Stock which does not have a fixed repurchase price shall be calculated in accordance with the terms of such Disqualified Stock as if such Disqualified Stock were purchased on any date on which Indebtedness shall be required to be determined pursuant to this Indenture, and if such price is based upon, or measured by, the Fair Market Value of such Disqualified Stock, such Fair Market Value to be determined in good faith by the Board of Directors of the issuer of such Disqualified Stock.

          “Indenture” means this Indenture, as amended or supplemented from time to time.

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          “Indenture Obligations” means the obligations of the Company and any other obligor under this Indenture or under the Notes, including any Guarantor, to pay principal of, premium, if any, and interest when due and payable, and all other amounts due or to become due under or in connection with this Indenture, the Notes and the performance of all other obligations to the Trustee and the holders under this Indenture and the Notes, according to the respective terms thereof.

          “Indirect Participant” means a Person who holds a beneficial interest in a Global Note through a Participant.

          “Initial Guarantors” has the meaning set forth in the preamble hereto.

          “Initial Notes” has the meaning stated in the second paragraph of this Indenture and means Notes other than any Exchange Notes and Additional Notes issued under this Indenture.

          “Initial Purchasers” means (i) Banc of America Securities LLC, Credit Suisse Securities (USA) LLC, Greenwich Capital Markets, Inc., BNP Paribas Securities Corp., Hibernia South Coast Capital, Inc. and Natexis Bleichroeder, Inc., as initial purchasers under the Purchase Agreement dated April 12, 2006, among the Company and the Initial Purchasers and (ii) with respect to any Additional Notes issued subsequent to the Issue Date, any investment bank acting as initial purchaser in connection with the issuance and sale of such Additional Notes.

          “Institutional Accredited Investor” means an institution that is an “accredited investor” as described in Rule 501(a)(1), (2), (3) or (7) under the Securities Act, who are not also QIBs.

          “Interest Rate Agreements” means one or more of the following agreements which shall be entered into by one or more financial institutions: interest rate protection agreements (including, without limitation, interest rate swaps, caps, floors, collars and similar agreements) and/or other types of interest rate hedging agreements from time to time.

          “Investment” means, with respect to any Person, directly or indirectly, any advance, loan (including guarantees), or other extension of credit or capital contribution to any other Person (by means of any transfer of cash or other property to others or any payment for property or services for the account or use of others), or any purchase, acquisition or ownership by such Person of any Capital Stock, bonds, notes, debentures or other securities issued or owned by any other Person and all other items that would be classified as investments on a balance sheet prepared in accordance with GAAP. “Investment” shall exclude direct or indirect advances to customers or suppliers in the ordinary course of business that are, in conformity with GAAP, recorded as accounts receivable, prepaid expenses or deposits on the Company’s or any Restricted Subsidiary’s balance sheet, endorsements for collection or deposit arising in the ordinary course of business and extensions of trade credit on commercially reasonable terms in accordance with normal trade practices. If the Company or any Restricted Subsidiary of the Company sells or otherwise disposes of any Capital Stock of any direct or indirect Subsidiary of the Company such that, after giving effect to any such sale or disposition, such Person is no longer a Subsidiary of the Company (other than the sale of all of the outstanding Capital Stock of

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such Subsidiary), the Company will be deemed to have made an Investment on the date of such sale or disposition equal to the Fair Market Value of the Company’s Investments in such Subsidiary that were not sold or disposed of in an amount determined as provided in Section 4.08 hereof.

          “Issue Date” means the original issue date of the Initial Notes under this Indenture.

          “Letter of Transmittal” means the letter of transmittal to be prepared by the Company and sent to all Holders of the Notes for use by such Holders in connection with an Exchange Offer.

          “Lien” means any mortgage or deed of trust, charge, pledge, lien (statutory or otherwise), privilege, security interest, assignment, deposit, arrangement, hypothecation, claim, preference, priority or other encumbrance for security purposes upon or with respect to any property of any kind (including any conditional sale, capital lease or other title retention agreement, any leases in the nature thereof, and any agreement to give any security interest), real or personal, movable or immovable, now owned or hereafter acquired. A Person will be deemed to own subject to a Lien any property which it has acquired or holds subject to the interest of a vendor or lessor under any conditional sale agreement, Capital Lease Obligation or other title retention agreement. Notwithstanding any other provisions of this Indenture, references herein to Liens allowed to exist upon any particular item of Property shall also be deemed (whether or not stated specifically) to allow Liens to exist upon any accessions, improvements or additions to such property, upon any contractual rights relating primarily to such Property, and upon any proceeds of such Property or of such accessions, improvements, additions or contractual rights.

          “Limited Partners” means Brigham Holdings I, LLC, a Nevada limited liability company, and Brigham Holdings II, LLC, a Nevada limited liability company. Each of the Limited Partners is a Wholly Owned Restricted Subsidiary of the Company, and a limited partner of BOG LP. As of the Issue Date, the Limited Partners do not conduct any business or operations, and hold no Properties with a Fair Market Value of more than $1.0 million other than the limited partnership interests in BOG LP.

          “Liquid Securities” means securities (i) of an issuer that is not an Affiliate of the Company, (ii) that are publicly traded on the New York Stock Exchange, the American Stock Exchange or the Nasdaq Stock Market and (iii) as to which the Company is not subject to any restrictions on sale or transfer (including any volume restrictions under Rule 144 under the Securities Act or any other restrictions imposed by the Securities Act) or as to which a registration statement under the Securities Act covering the resale thereof is in effect for as long as the securities are held; provided that securities meeting the requirements of clauses (i), (ii) and (iii) above shall be treated as Liquid Securities from the date of receipt thereof until and only until the earlier of (a) the date on which such securities are sold or exchanged for cash or Cash Equivalents and (b) 150 days following the date of receipt of such securities. If such securities are not sold or exchanged for cash or Cash Equivalents within 150 days of receipt thereof, for purposes of determining whether the transaction pursuant to which the Company or a Restricted Subsidiary received the securities was in compliance with Section 4.11 hereof, such securities shall be deemed not to have been Liquid Securities at any time.

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          “Material Change” means an increase or decrease (except to the extent resulting from changes in prices) of more than 30% during a fiscal quarter in the estimated discounted future net revenues from proved oil and gas reserves of the Company and its Restricted Subsidiaries, calculated in accordance with clause (i)(a) of the definition of Adjusted Consolidated Net Tangible Assets; provided, however, that the following will be excluded from the calculation of Material Change: (i) any acquisitions during the quarter of oil and gas reserves with respect to which the Company’s estimate of the discounted future net revenues from proved oil and gas reserves has been confirmed by independent petroleum engineers and (ii) any dispositions of properties and assets during such quarter that were disposed of in compliance with Section 4.11 hereof.

          “Maturity” means, when used with respect to the Notes, the date on which the principal of the Notes becomes due and payable as therein provided or as provided in this Indenture, whether at Stated Maturity, the Asset Sale Purchase Date, the Change of Control Purchase Date or the redemption date and whether by declaration of acceleration, Prepayment Offer in respect of Excess Proceeds, Change of Control Offer in respect of a Change of Control, call for redemption or otherwise.

          “Moody’s” means Moody’s Investors Service, Inc. and any successor thereof.

          “Net Available Cash” from an Asset Sale or Sale Leaseback Transaction means cash proceeds received therefrom (including (i) any cash proceeds received by way of deferred payment of principal pursuant to a note or installment receivable or otherwise, but only as and when received and (ii) the Fair Market Value of Liquid Securities and Cash Equivalents, and excluding (iii) any other consideration received in the form of assumption by the acquiring Person of Indebtedness or other obligations relating to the assets or property that is the subject of such Asset Sale or Sale Leaseback Transaction and (iv) except to the extent subsequently converted to cash, Cash Equivalents or Liquid Securities within 240 days after such Asset Sale or Sale Leaseback Transaction, consideration constituting Exchanged Properties or consideration other than as identified in the immediately preceding clauses (i) and (ii)), in each case net of:

          (a) all legal, title and recording expenses, commissions and other fees and expenses incurred, and all federal, state, foreign and local taxes required to be paid or accrued as a liability under GAAP as a consequence of such Asset Sale or Sale Leaseback Transaction,

          (b) all payments made on any Indebtedness which is secured by any assets subject to such Asset Sale or Sale Leaseback Transaction, in accordance with the terms of any Lien upon such assets, or which must by its terms, or in order to obtain a necessary consent to such Asset Sale or Sale Leaseback Transaction or by applicable law, be repaid out of the proceeds from such Asset Sale or Sale Leaseback Transaction, provided that such payments are made in a manner that results in the permanent reduction in the balance of such Indebtedness and, if applicable, a permanent reduction in any outstanding commitment for future incurrences of Indebtedness thereunder,

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     (c) all distributions and other payments required to be made to minority interest holders in Subsidiaries or joint ventures as a result of such Asset Sale or Sale Leaseback Transaction and

     (d) the deduction of appropriate amounts to be provided by the seller as a reserve, in accordance with GAAP, against any liabilities associated with the assets disposed of in such Asset Sale or Sale Leaseback Transaction and retained by the Company or any Restricted Subsidiary after such Asset Sale or Sale Leaseback Transaction;

provided, however, that if any consideration for an Asset Sale or Sale Leaseback Transaction (which would otherwise constitute Net Available Cash) is required to be held in escrow pending determination of whether a purchase price adjustment will be made, such consideration (or any portion thereof) shall become Net Available Cash only at such time as it is released to such Person or its Restricted Subsidiaries from escrow.

                “Net Cash Proceeds” means with respect to any issuance or sale of Capital Stock or options, warrants or rights to purchase Capital Stock, or debt securities or Capital Stock that have been converted into or exchanged for Capital Stock as provided under Section 4.08 hereof, the proceeds of such issuance or sale in the form of cash or Cash Equivalents including payments in respect of deferred payment obligations when received in the form of, or stock or other assets when disposed of for, cash or Cash Equivalents (except to the extent that such obligations are financed or sold with recourse to the Company or any Restricted Subsidiary), net of attorney’s fees, accountant’s fees and brokerage, consultation, underwriting and other fees and expenses actually incurred in connection with such issuance or sale and net of taxes paid or payable as a result thereof.

                “Net Working Capital” means (i) all current assets of the Company and its Restricted Subsidiaries, less (ii) all current liabilities of the Company and its Restricted Subsidiaries, except current liabilities included in Indebtedness, in each case as set forth in consolidated financial statements of the Company prepared in accordance with GAAP, provided, however, that all of the following shall be excluded in the calculation of Net Working Capital: (a) current assets or liabilities relating to the mark-to-market value of Interest Rate Agreements and hedging arrangements constituting Permitted Debt, (b) any current assets or liabilities relating to non-cash charges arising from any grant of Capital Stock, options to acquire Capital Stock, or other equity based awards, and (c) any current assets or liabilities relating to non-cash charges or accruals for future abandonment liabilities.

                “Non-Guarantor Restricted Subsidiary” means (a) each of the Limited Partners, and (b) any Restricted Subsidiary that is not a Wholly-Owned Restricted Subsidiary and is designated by the Company as a Non-Guarantor Restricted Subsidiary, as evidenced by a Board Resolution of the Board of of Directors of the Company.

                “Non-U.S. Person” means a Person who is not a U.S. Person.

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          “Notes” has the meaning stated in the second paragraph of this Indenture and more particularly means any Notes authenticated and delivered under this Indenture. For all purposes of this Indenture:

          (a) the term “Notes” shall include all Additional Notes issued hereunder and any Exchange Notes to be issued and exchanged for any Notes pursuant to an applicable Registration Rights Agreement and this Indenture, and

          (b) (i) all Exchange Notes that are issued and exchanged for the Initial Notes and (ii) all Additional Notes issued hereunder and Exchange Notes that are issued and exchanged for such Additional Notes, shall be treated as a single class.

          “Obligations” means any principal, premium, interest, penalties, fees, indemnifications, reimbursements, damages and other liabilities payable under the documentation governing any Indebtedness.

          “Offering Memorandum” means the final Offering Memorandum, dated April 12, 2006, relating to the Initial Notes.

          “Officer” means, with respect to any Person, the Chairman of the Board, the Chief Executive Officer, the President, the Chief Operating Officer, the Chief Financial Officer, the Treasurer, any Assistant Treasurer, the Controller, the Secretary or any Vice-President of such Person or in the case of a Person that is a partnership that has no such officers, any such officer of a general partner of such Person.

          “Officers’ Certificate” means a certificate signed on behalf of the Company by at least two Officers of the Company, one of whom must be the principal executive officer, the principal financial officer, the treasurer or the principal accounting officer of the Company, that meets the requirements of Section 12.05 hereof.

          “Oil and Gas Business” means the business of exploiting, exploring for, developing, acquiring, operating, producing, processing, gathering, marketing, storing, selling, hedging, treating, swapping, refining and transporting hydrocarbons and other related energy businesses.

          “Oil and Gas Liens” means (i) Liens on any specific property or any interest therein, construction thereon or improvement thereto to secure all or any part of the costs incurred for surveying, exploration, drilling, extraction, development, operation, production, construction, alteration, repair or improvement of, in, under or on such property and the plugging and abandonment of wells located thereon (it being understood that, in the case of oil and gas producing properties, or any interest therein, costs incurred for “development” shall include costs incurred for all facilities relating to such properties or to projects, ventures or other arrangements of which such properties form a part or which relate to such properties or interests); (ii) Liens on an oil or gas producing property to secure obligations incurred or guarantees of obligations incurred in connection with or necessarily incidental to commitments for the purchase or sale of, or the transportation or distribution of, the products derived from such property; (iii) Liens arising under partnership agreements, oil and gas leases, overriding royalty agreements, net profits agreements, production payment agreements, royalty trust agreements, incentive

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compensation programs for geologists, geophysicists and other providers of technical services to the Company or a Restricted Subsidiary, master limited partnership agreements, farm-out agreements, farm-in agreements, division orders, contracts for the sale, purchase, exchange, transportation, gathering or processing of oil, gas or other hydrocarbons, unitizations and pooling designations, declarations, orders and agreements, development agreements, operating agreements, production sales contracts, area of mutual interest agreements, gas balancing or deferred production agreements, injection, repressuring and recycling agreements, salt water or other disposal agreements, seismic or geophysical permits or agreements, and other agreements which are customary in the Oil and Gas Business; provided, however, in all instances that such Liens are limited to the assets that are the subject of the relevant agreement, program, order or contract; (iv) Liens arising in connection with Production Payments and Reserve Sales; and (v) Liens on pipelines or pipeline facilities that arise by operation of law.

          “Opinion of Counsel” means an opinion from legal counsel who is reasonably acceptable to the Trustee that meets the requirements of Section 12.05 hereof.

          “Pari Passu Indebtedness” means any Indebtedness of the Company or a Guarantor that is pari passu in right of payment to the Notes or a Guarantee, as the case may be.

          “Pari Passu Offer” means an offer by the Company or a Guarantor to purchase all or a portion of Pari Passu Indebtedness to the extent required by the indenture or other agreement or instrument pursuant to which such Pari Passu Indebtedness was issued.

          “Participant” means, with respect to the Depositary, Euroclear or Clearstream, a Person who has an account with the Depositary, Euroclear or Clearstream, respectively (and with respect to DTC, shall include Euroclear and Clearstream).

          “Permitted Business Investments” means Investments and expenditures made in the ordinary course of, and of a nature that is or shall have become customary in, the Oil and Gas Business as a means of actively engaging therein through agreements, transactions, interests or arrangements which permit one to share risks or costs, comply with regulatory requirements regarding local ownership or satisfy other objectives customarily achieved through the conduct of the Oil and Gas Business jointly with third parties, including (i) ownership interests in oil and gas properties or gathering, transportation, processing, storage or related systems and (ii) Investments and expenditures in the form of or pursuant to operating agreements, processing agreements, farm-in agreements, farm-out agreements, development agreements, area of mutual interest agreements, unitization agreements, pooling arrangements, joint bidding agreements, service contracts, joint venture agreements, partnership agreements (whether general or limited) and other similar agreements (including for limited liability companies) with third parties, excluding, however, Investments in corporations other than Restricted Subsidiaries.

          “Permitted Investment” means:

          (1) Investments in any Restricted Subsidiary or any Person which, as a result of such Investment, (a) becomes a Restricted Subsidiary or (b) is merged or consolidated with or into, or transfers or conveys substantially all of its assets to, or is liquidated into, the Company or any Restricted Subsidiary;

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     (2) Indebtedness of the Company or a Restricted Subsidiary described under clauses (4), (5) and (6) of the definition of “Permitted Debt;”

     (3) Investments in any of the Notes;

     (4) Cash Equivalents;

     (5) Investments in property, plant and equipment used in the ordinary course of business and Permitted Business Investments;

     (6) Investments acquired by the Company or any Restricted Subsidiary in connection with an asset sale permitted under Section 4.11 hereof to the extent such Investments are non-cash proceeds as permitted under such Section;

     (7) Investments in existence on the date of this Indenture;

     (8) Investments acquired in exchange for the issuance of Capital Stock of the Company (other than Disqualified Stock of the Company or a Restricted Subsidiary or Preferred Stock of a Restricted Subsidiary);

     (9) Investments in prepaid expenses, negotiable instruments held for collection and lease, utility and worker’s compensation, performance and other similar deposits provided to third parties in the ordinary course of business;

     (10) loans or advances to employees of the Company in the ordinary course of business for bona fide business purposes of the Company and its Restricted Subsidiaries (including travel, entertainment and relocation expenses) in the aggregate amount outstanding at any one time of not more than $2.0 million;

     (11) any Investments received in good faith in settlement or compromise of receivables or other obligations that were obtained in the ordinary course of business, including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer;

     (12) other Investments in the aggregate amount outstanding at any one time of up to the greater of (x) $15.0 million and (y) 5.0% of Adjusted Consolidated Net Tangible Assets; and

     (13) guarantees received with respect to any Permitted Investment listed above.

     In connection with any assets or property contributed or transferred to any Person as an Investment, such property and assets shall be equal to the Fair Market Value at the time of Investment, without regard to subsequent changes in value.

     “Permitted Lien” means:

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     (a) any Lien existing as of the date of this Indenture securing Indebtedness or obligations existing on the date of this Indenture and not otherwise referred to in this definition;

     (b) any Lien with respect to the Senior Credit Agreement or any successor Credit Facilities so long as the aggregate principal amount outstanding under the Senior Credit Agreement or any successor Credit Facilities that is secured pursuant to this clause (b) does not exceed the principal amount which could be borrowed under clause (1) of the definition of Permitted Debt;

     (c) any Lien securing the Notes, the Guarantees and other obligations arising under this Indenture;

     (d) any Lien in favor of the Company or a Restricted Subsidiary;

     (e) any Lien arising by reason of:

     (1) any judgment, decree or order of any court, so long as such Lien is adequately bonded and any appropriate legal proceedings which may have been duly initiated for the review of such judgment, decree or order shall not have been finally terminated or the period within which such proceedings may be initiated shall not have expired;

     (2) taxes, assessments or governmental charges or claims that are not yet delinquent or which are being contested in good faith by appropriate proceedings promptly instituted and diligently conducted, provided that any reserve or other appropriate provision as will be required in conformity with GAAP will have been made therefor;

     (3) security made in the ordinary course of business in connection with workers’compensation, unemployment insurance or other types of social security;

     (4) good faith deposits in connection with tenders, leases and contracts (other than contracts for the payment of Indebtedness);

     (5) zoning restrictions, easements, licenses, reservations, title defects, rights of others for rights of way, utilities, sewers, electric lines, telephone or telegraph lines, and other similar purposes, provisions, covenants, conditions, waivers, restrictions on the use of property or minor irregularities of title (and with respect to leasehold interests, mortgages, obligations, Liens and other encumbrances incurred, created, assumed or permitted to exist and arising by, through or under a landlord or owner of the leased property, with or without consent of the lessee), none of which materially impairs the use of any parcel of property material to the operation of the business of the Company or any Subsidiary or the value of such property for the purpose of such business;

     (6) deposits to secure public or statutory obligations, or in lieu of surety or appeal bonds;

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     (7) operation of law or contract in favor of mechanics, carriers, warehousemen, landlords, materialmen, laborers, employees, suppliers and similar persons, incurred in the ordinary course of business for sums which are not yet delinquent or are being contested in good faith by negotiations or by appropriate proceedings which suspend the collection thereof;

     (8) Indebtedness or other obligations of a Restricted Subsidiary owing to the Company or another Restricted Subsidiary of the Company; or

     (9) normal depository arrangements with banks;

     (f) any Lien securing Acquired Debt created prior to (and not created in connection with, or in contemplation of) the incurrence of such Indebtedness by the Company or any Subsidiary; provided that such Lien only secures the assets acquired in connection with the transaction pursuant to which the Acquired Debt became an obligation of the Company or a Restricted Subsidiary;

     (g) any Lien to secure performance bids, leases (including, without limitation, statutory and common law landlord’s liens), statutory obligations, letters of credit and other obligations of a like nature and incurred in the ordinary course of business of the Company or any Subsidiary and not securing or supporting Indebtedness, and any Lien to secure statutory or appeal bonds;

     (h) any Lien securing Indebtedness permitted to be incurred pursuant to clause (6) or clause (8) of the definition of Permitted Debt, so long as none of such Indebtedness constitutes debt for borrowed money;

     (i) any Lien securing Capital Lease Obligations or Purchase Money Obligations incurred in accordance with this Indenture (pursuant to clause (7) of the definition of Permitted Debt) and which are incurred or assumed solely in connection with the acquisition, development or construction of real or personal, moveable or immovable property commencing within 90 days of such incurrence or assumption; provided that such Liens only extend to such acquired, developed or constructed property, such Liens secure Indebtedness in an amount not in excess of the original purchase price or the original cost of any such assets or repair, addition or improvement thereto, and the incurrence of such Indebtedness is permitted by Section 4.07 hereof;

     (j) leases and subleases of real property which do not materially interfere with the ordinary conduct of the business of the Company or any of its Restricted Subsidiaries;

     (k) (1) Liens on property, assets or shares of stock of a Person at the time such Person becomes a Restricted Subsidiary or is merged with or into or consolidated with the Company or any of its Restricted Subsidiaries; provided, however, that such Liens are not created, incurred or assumed in connection with, or in contemplation of, such other Person becoming a Restricted Subsidiary or such merger or consolidation; provided further that any such Lien may not extend to any other property owned by the Company or any Restricted Subsidiary and assets fixed or appurtenant thereto; and (2) Liens on

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property, assets or shares of capital stock existing at the time of acquisition thereof by the Company or any of its Restricted Subsidiaries; provided, however, that such Liens are not created, incurred or assumed in connection with, or in contemplation of, such acquisition and do not extend to any property other than the property so acquired;

     (l) Oil and Gas Liens, in each case which are not incurred in connection with the borrowing of money;

     (m) any extension, renewal, refinancing or replacement, in whole or in part, of any Lien described in the foregoing clauses (a) through (l) so long as no additional collateral is granted as security thereby; and

     (n) in addition to the items referred to in clauses (a) through (m) above, Liens of the Company and its Restricted Subsidiaries to secure Indebtedness in an aggregate amount at any time outstanding which does not exceed 10.0% of Adjusted Consolidated Net Tangible Assets as most recently determined at such time.

     Notwithstanding anything in clauses (a) through (n) of this definition, the term “Permitted Liens” does not include any Liens resulting from the creation, incurrence, issuance, assumption or guarantee of any Production Payments other than Production Payments that are created, incurred, issued, assumed or guaranteed in connection with the financing of, and within 90 days after, the acquisition of the properties or assets that are subject thereto.

     “Permitted Refinancing Indebtedness” means any Indebtedness of the Company or any of its Restricted Subsidiaries issued in exchange for, or the net proceeds of which are used to refund, refinance, replace, defease or discharge other Indebtedness of the Company or any of its Restricted Subsidiaries (other than intercompany Indebtedness); provided that:

     (1) the principal amount (or accreted value, if applicable) of such Permitted Refinancing Indebtedness does not exceed the principal amount (or accreted value, if applicable) of the Indebtedness being renewed, refunded, refinanced, replaced, defeased or discharged (plus all accrued interest on the Indebtedness and the amount of all fees and expenses, including premiums, incurred in connection therewith);

     (2) such Permitted Refinancing Indebtedness has a final maturity date later than the final maturity date of, and has a Weighted Average Life to Maturity equal to or greater than the Weighted Average Life to Maturity of, the Indebtedness being renewed, refunded, refinanced, replaced, defeased or discharged;

     (3) if the Indebtedness being renewed, refunded, refinanced, replaced, defeased or discharged is subordinated in right of payment to the Notes, such Permitted Refinancing Indebtedness is subordinated in right of payment to the Notes on terms at least as favorable to the Holders of Notes as those contained in the documentation governing the Indebtedness being renewed, refunded, refinanced, replaced, defeased or discharged; and

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           (4) such Indebtedness is borrowed either by the Company or by the Restricted Subsidiary that is the borrower on the Indebtedness being renewed, refunded, refinanced, replaced, defeased or discharged.

          “Person” means any individual, corporation, limited liability company, partnership, joint venture, association, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision thereof.

          “Predecessor Note” of any particular Note means every previous Note evidencing all or a portion of the same Indebtedness as that evidenced by such particular Note; and any Note authenticated and delivered under Section 2.08 in lieu of a lost, destroyed or stolen Note shall be deemed to evidence the same Indebtedness as the lost, destroyed or stolen Note.

          “Preferred Stock” means, with respect to any Person, any Capital Stock of any class or classes (however designated) which is preferred as to the payment of dividends or distributions, or as to the distribution of assets upon any voluntary or involuntary liquidation or dissolution of such Person, over the Capital Stock of any other class in such Person.

          “Private Placement Legend” means the legend set forth in Section 2.07(g)(i) to be placed on all Notes issued under this Indenture except where otherwise permitted by the provisions of this Indenture.

          “Production Payments” means, collectively, Dollar-Denominated Production Payments and Volumetric Production Payments.

          “Production Payments and Reserve Sales” means the grant or transfer by the Company or a Restricted Subsidiary to any Person of a royalty, overriding royalty, net profits interest, production payment (whether volumetric or dollar denominated), partnership or other interest in oil and gas properties, reserves or the right to receive all or a portion of the production or the proceeds from the sale of production attributable to such properties where the holder of such interest has recourse solely to such properties, production or proceeds of production, subject to the obligation of the grantor or transferor to operate and maintain, or cause the subject interests to be operated and maintained, in a reasonably prudent manner or other customary standard or subject to the obligation of the grantor or transferor to indemnify for environmental, title or other matters customary in the Oil and Gas Business, including any such grants or transfers pursuant to incentive compensation programs on terms that are reasonably customary in the Oil and Gas Business for geologists, geophysicists and other providers of technical services to the Company or a Restricted Subsidiary.

          “Property” means, with respect to any Person, any interest of such Person in any kind of property or asset, whether real, personal or mixed, or tangible or intangible, including Capital Stock and other securities issued by any other Person (but excluding Capital Stock or other securities issued by such first mentioned Person).

          “Purchase Money Obligation” means any Indebtedness secured by a Lien on assets related to the business of the Company and any additions and accessions thereto, which are purchased or constructed by the Company at any time after the Notes are issued; provided that

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     (1) the security agreement or conditional sales or other title retention contract pursuant to which the Lien on such assets is created (collectively, a “Purchase Money Security Agreement”) shall be entered into within 90 days after the purchase or substantial completion of the construction of such assets and shall at all times be confined solely to the assets so purchased or acquired (together with any additions, accessions, and other related assets referred to in the last sentence of the definition of “Lien”),

     (2) at no time shall the aggregate principal amount of the outstanding Indebtedness secured thereby be increased, except in connection with the purchase of additions, improvements, and accessions thereto and except in respect of fees and other obligations in respect of such Indebtedness, and

     (3) (A) the aggregate outstanding principal amount of Indebtedness secured thereby (determined on a per asset basis in the case of any additions and accessions) shall not at the time such Purchase Money Security Agreement is entered into exceed 100% of the purchase price to the Company of the assets subject thereto or (B) the Indebtedness secured thereby shall be with recourse solely to the assets so purchased or acquired (together with any additions, accessions, and other related assets referred to in the last sentence of the definition of “Lien”).

          “QIB” means a “qualified institutional buyer” as defined in Rule 144A.

          “Qualified Capital Stock” of any Person means any and all Capital Stock of such Person other than Disqualified Stock.

          “Registration Rights Agreement” means (i) the Registration Rights Agreement among the Company, the Initial Guarantors and the Initial Purchasers named therein, dated as of April 20, 2006, relating to the Initial Notes, and (ii) with respect to any Additional Notes issued subsequent to the Issue Date, any registration rights agreement entered into for the benefit of the holders of such Additional Notes, if any.

          “Regulation S” means Regulation S promulgated under the Securities Act.

          “Regulation S Global Note” means a Regulation S Temporary Global Note or a Regulation S Permanent Global Note, as appropriate.

          “Regulation S Permanent Global Note” means a permanent global Note in the form of Exhibit A1 hereto bearing the Global Note Legend and the Private Placement Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount at maturity of the Regulation S Temporary Global Note upon expiration of the Restricted Period.

          “Regulation S Temporary Global Note” means a temporary global Note in the form of Exhibit A2 hereto bearing the Global Note Legend, the Private Placement Legend and the Temporary Regulation S Legend and deposited with or on behalf of and registered in the name of the Depositary or its nominee, issued in a denomination equal to the outstanding principal amount at maturity of the Notes initially sold in reliance on Rule 903 of Regulation S.

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          “Responsible Officer,” when used with respect to the Trustee, means any officer within the corporate trust department of the Trustee (or any successor group of the Trustee) or any other officer of the Trustee customarily performing functions similar to those performed by any of the above designated officers and also means, with respect to a particular corporate trust matter, any other officer to whom such matter is referred because of his or her knowledge of and familiarity with the particular subject.

          “Restricted Definitive Note” means a Definitive Note bearing the Private Placement Legend.

          “Restricted Global Note” means a Global Note bearing the Private Placement Legend.

          “Restricted Period” means the 40-day distribution compliance period, as defined in Rule 902(f) of Regulation S.

          “Restricted Subsidiary” means any Subsidiary of the Company that has not been designated by the Board of Directors of the Company by a Board Resolution delivered to the Trustee as an Unrestricted Subsidiary pursuant to and in compliance with Section 4.18 hereof.

          “Rule 144” means Rule 144 promulgated under the Securities Act.

          “Rule 144A” means Rule 144A promulgated under the Securities Act.

          “Rule 903” means Rule 903 promulgated under the Securities Act.

          “Rule 904” means Rule 904 promulgated under the Securities Act.

          “Sale Leaseback Transaction” means, with respect to the Company or any of its Restricted Subsidiaries, any arrangement with any Person providing for the leasing by the Company or any of its Restricted Subsidiaries of any principal property, acquired or placed into service more than 180 days prior to such arrangement, whereby such property has been or is to be sold or transferred by the Company or any of its Restricted Subsidiaries to such Person.

          “Securities Act” means the Securities Act of 1933, as amended, or any successor statute, and the rules and regulations promulgated by the Commission thereunder.

          “Senior Credit Agreement” means the Fourth Amended and Restated Credit Agreement, dated as of June 29, 2005, as amended, among BOG LP, as borrower thereunder, the Company and Brigham, Inc., as guarantors thereof, Bank of America, N.A., as administrative agent and as issuing lender, The Royal Bank of Scotland plc, as co-arranger and documentation agent, BNP Paribas, as co-arranger and syndication agent, Banc of America Securities LLC, as lead arranger and sole book manager, and the lenders party thereto, as such agreement, in whole or in part, in one or more instances, may be amended, renewed, extended, substituted, refinanced, restructured, replaced, supplemented or otherwise modified from time to time (including, without limitation, any successive renewals, extensions, substitutions, refinancings, restructurings, replacements, supplementations or other modifications of the foregoing).

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          “Series A Preferred Stock” means the Company’s mandatorily redeemable Series A Preferred Stock outstanding on the Issue Date, $0.01 par value, $20 stated and redemption value, maturing on October 31, 2010.

          “Shelf Registration Statement” means a Shelf Registration Statement that may be filed pursuant to a Registration Rights Agreement.

          “S&P” means Standard & Poor’s Ratings Services, a division of The McGraw-Hill Companies, Inc., and any successor thereof.

          “Significant Subsidiary” means any Restricted Subsidiary that would be a “significant subsidiary” of the Company within the meaning of Rule 1-02 under Regulation S-X promulgated by the Commission as in effect on the date of this Indenture.

          “Stated Maturity” means, when used with respect to any Indebtedness or any installment of interest thereon, the dates specified in such Indebtedness as the fixed date on which the principal of such Indebtedness or such installment of interest, as the case may be, is due and payable.

          “Subordinated Indebtedness” means Indebtedness of the Company or a Guarantor subordinated in right of payment to the Notes or a Guarantee, as the case may be.

          “Subsidiary” of a Person means

     (1) any corporation more than 50% of the outstanding voting power of the Voting Stock of which is owned or controlled, directly or indirectly, by such Person or by one or more other Subsidiaries of such Person, or by such Person and one or more other Subsidiaries thereof, or

     (2) any limited partnership of which such Person or any Subsidiary of such Person is a general partner, or

     (3) any other Person in which such Person, or one or more other Subsidiaries of such Person, or such Person and one or more other Subsidiaries, directly or indirectly, has more than 50% of the outstanding partnership or similar interests or has the power, by contract or otherwise, to direct or cause the direction of the policies, management and affairs thereof.

          “Temporary Regulation S Legend” means the legend set forth in Section 2.07(h) hereof, which is required to be placed on the Regulation S Temporary Global Note.

          “Trade Accounts Payable” means accounts payable or other obligations of the Company or any Restricted Subsidiary to trade creditors created or assumed by the Company or such Restricted Subsidiary in the ordinary course of business in connection with the obtaining of goods or services.

          “Trust Indenture Act” or “TIA” means the Trust Indenture Act of 1939, as amended, or any successor statute.

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          “Trustee” means Wells Fargo Bank, N.A. until a successor replaces it in accordance with the applicable provisions of this Indenture and thereafter means the successor serving hereunder.

          “Unrestricted Definitive Note” means one or more Definitive Notes that do not bear and are not required to bear the Private Placement Legend.

          “Unrestricted Global Note” means a permanent Global Note substantially in the form of Exhibit A1 attached hereto that bears the Global Note Legend and that has the “Schedule of Exchanges of Interests in the Global Note” attached thereto, and that is deposited with or on behalf of and registered in the name of the Depositary, representing a series of Notes that do not bear the Private Placement Legend.

          “Unrestricted Subsidiary” means any Subsidiary of the Company (other than a Guarantor) designated as such pursuant to and in compliance with Section 4.18 hereof.

          “Unrestricted Subsidiary Indebtedness” of any Unrestricted Subsidiary means Indebtedness of such Unrestricted Subsidiary

     (1) as to which neither the Company nor any Restricted Subsidiary is directly or indirectly liable (by virtue of the Company or any such Restricted Subsidiary being the primary obligor on, guarantor of, or otherwise liable in any respect to, such Indebtedness), except Guaranteed Debt of the Company or any Restricted Subsidiary to any Affiliate of the Company, in which case (unless the incurrence of such Guaranteed Debt resulted in a Restricted Payment at the time of incurrence) the Company shall be deemed to have made a Restricted Payment equal to the principal amount of any such Indebtedness to the extent guaranteed at the time such Affiliate is designated an Unrestricted Subsidiary, and

     (2) which, upon the occurrence of a default with respect thereto, does not result in, or permit any holder of any Indebtedness of the Company or any Restricted Subsidiary to declare, a default on such Indebtedness of the Company or any Restricted Subsidiary or cause the payment thereof to be accelerated or payable prior to its Stated Maturity;

provided that notwithstanding the foregoing, any Unrestricted Subsidiary may guarantee the Notes or any Credit Facility.

          “U.S. Government Obligations” means (i) securities that are (a) direct obligations of the United States of America for the payment of which the full faith and credit of the United States of America is pledged or (b) obligations of a Person controlled or supervised by and acting as an agency or instrumentality of the United States of America, the payment of which is unconditionally guaranteed as a full faith and credit obligation by the United States of America, which, in either case, are not callable or redeemable at the option of the issuer thereof; and (ii) depositary receipts issued by a bank (as defined in Section 3(a)(2) of the Securities Act) as custodian with respect to any U.S. Government Obligation which is specified in clause (i) above and held by such bank for the account of the holder of such depositary receipt, or with respect to any specific payment of principal or interest on any U.S. Government Obligation which is so

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specified and held; provided that (except as required by law) such custodian is not authorized to make any deduction from the amount payable to the holder of such depositary receipt from any amount received by the custodian in respect of the U.S. Government Obligation or the specific payment of principal or interest of the U.S. Government Obligation evidenced by such depositary receipt.

          “U.S. Person” means a U.S. person as defined in Rule 902(k) under the Securities Act.

          “Volumetric Production Payment” means a production payment that is recorded as a sale in accordance with GAAP, whether or not the sale price must be recorded as deferred revenue, together with all undertakings and obligations in connection therewith.

          “Voting Stock” of a Person means Capital Stock of such Person of the class or classes pursuant to which the holders thereof have the general voting power under ordinary circumstances to elect at least a majority of the Board of Directors, managers or trustees of such Person (irrespective of whether or not at the time Capital Stock of any other class or classes shall have or might have voting power by reason of the happening of any contingency).

          “Weighted Average Life to Maturity” means, as of the date of determination with respect to any Indebtedness, the quotient obtained by dividing (1) the sum of the products of (a) the number of years from the date of determination to the date or dates of each successive scheduled principal payment and (b) the amount of each such principal payment by (2) the sum of all such principal payments.

          “Wholly Owned Restricted Subsidiary” means a Restricted Subsidiary all the Capital Stock of which is owned by the Company or another Wholly Owned Restricted Subsidiary (other than directors’ qualifying shares).

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Section 1.02. Other Definitions.

	DEFINED
	IN
TERM	SECTION
“Act”		12.14
“Asset Sale Purchase Date”		4.11
“Authentication Order”		2.02
“Change of Control Offer”		4.21
“Change of Control Purchase Date”		4.20
“Change of Control Purchase Notice”		4.20
“Change of Control Purchase Price”		4.20
“Covenant Defeasance”		8.03
“Defeasance Redemption Date”		8.04
“Designation”		4.18
“Designation Amount”		4.18
“DTC”		2.01
“Event of Default”		6.01
“Excess Proceeds”		4.11
“Funds in Trust”		8.04
“incur”		4.07
“Legal Defeasance”		8.02
“Paying Agent”		2.04
“Permitted Consideration”		4.11
“Permitted Debt”		4.07
“Permitted Payment”		4.08
“Prepayment Offer”		4.11
“Prepayment Offer Notice”		4.11
“Prepayment Offer Price”		4.11
“Purchase Money Security Agreement”		1.01
“Registrar”		2.04
“Related Proceedings”		12.09

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	DEFINED
	IN
TERM	SECTION
“Restricted Payments”		4.08
“Revocation”		4.18
“Specified Courts”		12.09
“Surviving Entity”		5.01
“Surviving Guarantor Entity”		5.01
“Trustee”		8.05

Section 1.03. Incorporation by Reference of Trust Indenture Act.

          Whenever this Indenture refers to a provision of the TIA, the provision is incorporated by reference in and made a part of this Indenture.

          All terms used in this Indenture that are defined by the TIA, defined by TIA reference to another statute or defined by Commission rule under the TIA have the meanings so assigned to them.

Section 1.04. Rules of Construction.

          Unless the context otherwise requires:

     (i) a term has the meaning assigned to it;

     (ii) an accounting term not otherwise defined has the meaning assigned to it in accordance with GAAP;

     (iii) words in the singular include the plural, and in the plural include the singular;

     (iv) references to sections of or rules under the Securities Act shall be deemed to include substitute, replacement of successor sections or rules adopted by the Commission from time to time; and

     (v) all references herein to “interest” include the Additional Interest.

ARTICLE TWO
The Notes

Section 2.01. Form and Dating.

          (a) General. The Notes and the Trustee’s certificate of authentication shall be substantially in the form of Exhibit A1 or A2 hereto. The Notes may have notations, legends or endorsements required by law, stock exchange rule or usage. Each Note shall be dated the date of its authentication. The Notes shall be issued in registered, global form without interest

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coupons and only shall be in minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof.

          The terms and provisions contained in the Notes shall constitute, and are hereby expressly made, a part of this Indenture and the Company, any Guarantors and the Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. However, to the extent any provision of any Note conflicts with the express provisions of this Indenture, the provisions of this Indenture shall govern and be controlling.

          (b) Global Notes. Notes issued in global form shall be substantially in the form of Exhibit A1 or A2 attached hereto (including the Global Note Legend thereon and the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Notes issued in definitive form shall be substantially in the form of Exhibit A1 attached hereto (but without the Global Note Legend thereon and without the “Schedule of Exchanges of Interests in the Global Note” attached thereto). Each Global Note shall represent such of the outstanding Notes as shall be specified therein and each shall provide that it shall represent the aggregate principal amount of outstanding Notes from time to time endorsed thereon and that the aggregate principal amount of outstanding Notes represented thereby may from time to time be reduced or increased, as appropriate, to reflect exchanges and redemptions. Any endorsement of a Global Note to reflect the amount of any increase or decrease in the aggregate principal amount of outstanding Notes represented thereby shall be made by the Trustee in accordance with instructions given by the Holder thereof as required by Section 2.07 hereof.

          (c) Temporary Global Notes. To the extent required by Regulation S, Notes offered and sold in reliance on Regulation S shall be issued initially in the form of the Regulation S Temporary Global Note, which shall be deposited on behalf of the purchasers of the Notes represented thereby with the Trustee, as custodian for The Depository Trust Company (“DTC”), and registered in the name of the Depositary or the nominee of the Depositary for the accounts of designated agents holding on behalf of Euroclear or Clearstream, duly executed by the Company and authenticated by the Trustee as hereinafter provided. The Restricted Period shall be terminated upon the receipt by the Trustee of an Officers’ Certificate from the Company certifying that the Restricted Period may be terminated in accordance with Regulation S and that beneficial interests in the Regulation S Temporary Global Note are permitted to be exchanged for beneficial interests in Regulation S Permanent Global Notes. Following the termination of the Restricted Period, beneficial interests in the Regulation S Temporary Global Note shall be exchanged for beneficial interests in Regulation S Permanent Global Notes pursuant to the Applicable Procedures. Simultaneously with the authentication of Regulation S Permanent Global Notes, the Trustee shall cancel the Regulation S Temporary Global Note. The aggregate principal amount of the Regulation S Temporary Global Note and the Regulation S Permanent Global Notes may from time to time be increased or decreased by adjustments made on the records of the Trustee and the Depositary or its nominee, as the case may be, in connection with transfers of interest as hereinafter provided.

          (d) Euroclear and Clearstream Procedures Applicable. The provisions of the “Operating Procedures of the Euroclear System” and “Terms and Conditions Governing Use of Euroclear” and the “General Terms and Conditions of Cedel Bank” and “Customer Handbook” of Clearstream shall be applicable to transfers of beneficial interests in the Regulation S

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Temporary Global Note and the Regulation S Permanent Global Notes that are held by Participants through Euroclear or Clearstream.

          (e) Additional Notes. Notwithstanding anything else herein, with respect to any Additional Notes issued subsequent to the date of this Indenture, when the context requires, (1) all references in Article Two herein and elsewhere in this Indenture to a Registration Rights Agreement shall be to the registration rights agreement entered into with respect to such Additional Notes, (2) any references in this Indenture to the Exchange Offer, Exchange Offer Registration Statement, Shelf Registration Statement, Initial Purchasers, and any other term related thereto shall be to such terms as they are defined in such Registration Rights Agreement entered into with respect to such Additional Notes, (3) all time periods described in the Notes with respect to the registration of such Additional Notes shall be as provided in such Registration Rights Agreement entered into with respect to such Additional Notes, (4) any Additional Interest, if set forth in such Registration Rights Agreement, may be paid to the Holders of the Additional Notes immediately prior to the making or the consummation of the Exchange Offer regardless of any other provisions regarding record dates herein and (5) all provisions of this Indenture shall be construed and interpreted to permit the issuance of such Additional Notes and to allow such Additional Notes to become fungible and interchangeable with the Initial Notes originally issued under this Indenture (and Exchange Notes issued in exchange therefor). Indebtedness represented by Additional Notes shall be subject to the covenants contained in this Indenture.

Section 2.02. Execution and Authentication.

          (a) Two Officers of the Company shall sign the Notes for the Company by manual or facsimile signature.

          (b) The Trustee shall, upon a written order of the Company signed by two Officers of the Company (an “Authentication Order”) delivered to the Trustee from time to time, authenticate and deliver Notes for original issue without limit as to the aggregate principal amount thereof, subject to compliance with Section 4.07, of which $125.0 million will be issued on the date of this Indenture.

          (c) Upon receipt of an Authentication Order, the Trustee shall authenticate for original issue (i) Exchange Notes in exchange for Initial Notes in an aggregate principal amount not to exceed $125 million or (ii) Exchange Notes in exchange for Additional Notes; provided that such Exchange Notes shall be issuable only upon the valid surrender for cancellation of Initial Notes issued on the date hereof or Additional Notes, as the case may be, of a like aggregate principal amount in accordance with an Exchange Offer pursuant to an applicable Registration Rights Agreement.

          (d) If an Officer whose signature is on a Note no longer holds that office at the time a Note is authenticated, the Note shall nevertheless be valid.

          (e) A Note shall not be valid until authenticated by the manual signature of the Trustee. Such signature shall be conclusive evidence that the Note has been authenticated under this Indenture.

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          (f) The aggregate principal amount of Notes which may be authenticated and delivered under this Indenture is unlimited.

          (g) The Trustee may appoint an authenticating agent acceptable to the Company to authenticate Notes. An authenticating agent may authenticate Notes whenever the Trustee may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. An authenticating agent has the same rights as an Agent to deal with Holders or an Affiliate of the Company.

Section 2.03. Methods of Receiving Payments on the Notes.

          If a Holder of Notes has given wire transfer instructions to the Company at least 10 Business Days before payment is due, the Company shall pay all principal, interest and premium, if any, on that Holder’s Notes in accordance with those instructions. All other payments on Notes shall be made at the office or agency of the Paying Agent and Registrar within the City and State of New York unless the Company elects to make interest payments by check mailed to the Holders at their addresses set forth in the register of Holders. Payments of interest to the Trustee as Paying Agent, if the Trustee then acts as Paying Agent, with respect to any Interest Payment Date (as defined in the Notes) shall be made by the Company in immediately available funds for receipt by the Trustee one Business Day prior to the such Interest Payment Date (or in no event later than 12:30 p.m. Eastern Time on such Interest Payment Date).

Section 2.04. Registrar and Paying Agent.

          (a) The Company shall maintain an office or agency where Notes may be presented for registration of transfer or for exchange (“Registrar”) and an office or agency where Notes may be presented for payment (“Paying Agent”). The Registrar shall keep a register of the Notes and of their transfer and exchange. The Company may appoint one or more co-registrars and one or more additional paying agents. The term “Registrar” includes any co-registrar and the term “Paying Agent” includes any additional paying agent. The Company may change any Paying Agent or Registrar without prior notice to any Holder. The Company shall notify the Trustee in writing of the name and address of any Agent not a party to this Indenture. If the Company fails to appoint or maintain another entity as Registrar or Paying Agent, the Trustee shall act as such. The Company or any of its Subsidiaries may act as Paying Agent or Registrar.

          (b) The Company initially appoints DTC to act as Depositary with respect to the Global Notes.

          (c) The Company initially appoints the Trustee to act as the Registrar and Paying Agent and to act as Custodian with respect to the Global Notes.

Section 2.05. Paying Agent to Hold Money in Trust.

     The Company shall require each Paying Agent other than the Trustee to agree in writing that the Paying Agent shall hold in trust for the benefit of the Holders or the Trustee all money held by the Paying Agent for the payment of principal or premium, if any, or interest on the Notes, and shall notify the Trustee of any default by the Company in making any such

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payment. While any such default continues, the Trustee may require a Paying Agent to pay all money held by it to the Trustee. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee. Upon payment over to the Trustee, the Paying Agent (if other than the Company or one of its Subsidiaries) shall have no further liability for the money. If the Company or any of its Subsidiaries acts as Paying Agent, it shall segregate and hold in a separate trust fund for the benefit of the Holders all money held by it as Paying Agent. Upon any bankruptcy or reorganization proceedings relating to the Company, the Trustee shall serve as Paying Agent for the Notes.

Section 2.06. Holder Lists.

          The Trustee shall preserve in as current a form as is reasonably practicable the most recent list available to it of the names and addresses of all Holders and shall otherwise comply with TIA Section 312(a). If the Trustee is not the Registrar, the Company shall furnish to the Trustee at least seven Business Days before each interest payment date and at such other times as the Trustee may request in writing, a list in such form and as of such date as the Trustee may reasonably require of the names and addresses of the Holders of Notes and the Company shall otherwise comply with TIA Section 312(a).

Section 2.07. Transfer and Exchange.

          (a) Transfer and Exchange of Global Notes. A Global Note may not be transferred as a whole except by the Depositary to a nominee of the Depositary, by a nominee of the Depositary to the Depositary or to another nominee of the Depositary, or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. All Global Notes shall be exchanged by the Company for Definitive Notes if (i) the Company delivers to the Trustee notice from the Depositary that it is unwilling or unable to continue to act as Depositary or that it is no longer a clearing agency registered under the Exchange Act and, in either case, a successor Depositary is not appointed by the Company within 90 days after the date of such notice from the Depositary; (ii) the Company in its sole discretion determines that the Global Notes (in whole but not in part) should be exchanged for Definitive Notes and delivers a written notice to such effect to the Trustee; provided that in no event shall the Regulation S Temporary Global Note be exchanged by the Company for Definitive Notes prior to (x) the expiration of the Restricted Period and (y) the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) under the Securities Act; or (iii) there shall have occurred and be continuing a Default or Event of Default with respect to the Notes. Upon the occurrence of any of the preceding events in (i), (ii) or (iii) above, Definitive Notes shall be issued in such names as the Depositary shall instruct the Trustee. Global Notes also may be exchanged or replaced, in whole or in part, as provided in Sections 2.08 and 2.11 hereof. Every Note authenticated and delivered in exchange for, or in lieu of, a Global Note or any portion thereof, pursuant to this Section 2.07 or Section 2.08 or 2.11 hereof, shall be authenticated and delivered in the form of, and shall be, a Global Note. A Global Note may not be exchanged for another Note other than as provided in this Section 2.07(a); however, beneficial interests in a Global Note may be transferred and exchanged as provided in Section 2.07(b), (c) or (f) hereof.

          (b) Transfer and Exchange of Beneficial Interests in the Global Notes. The transfer and exchange of beneficial interests in the Global Notes shall be effected through the

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Depositary, in accordance with the provisions of this Indenture and the Applicable Procedures. Beneficial interests in the Restricted Global Notes shall be subject to restrictions on transfer comparable to those set forth herein to the extent required by the Securities Act. Transfers of beneficial interests in the Global Notes also shall require compliance with either subparagraph (i) or (ii) below, as applicable, as well as one or more of the other following subparagraphs, as applicable:

     (i) Transfer of Beneficial Interests in the Same Global Note. Beneficial interests in any Restricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in the same Restricted Global Note in accordance with the transfer restrictions set forth in the Private Placement Legend and any Applicable Procedures; provided, however, that prior to the expiration of the Restricted Period, transfers of beneficial interests in the Regulation S Temporary Global Note may not be made to a U.S. Person or for the account or benefit of a U.S. Person (other than a “distributor” (as defined in Rule 902(d) of Regulation S)). Beneficial interests in any Unrestricted Global Note may be transferred to Persons who take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note. Except as may be required by any Applicable Procedures, no written orders or instructions shall be required to be delivered to the Registrar to effect the transfers described in this Section 2.07(b)(i).

     (ii) All Other Transfers and Exchanges of Beneficial Interests in Global Notes. In connection with all transfers and exchanges of beneficial interests that are not subject to Section 2.07(b)(i) above, the transferor of such beneficial interest must deliver to the Registrar either (A) (1) a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to credit or cause to be credited a beneficial interest in another Global Note in an amount equal to the beneficial interest to be transferred or exchanged and (2) instructions given in accordance with the Applicable Procedures containing information regarding the Participant account to be credited with such increase or (B) (1) if permitted under Section 2.07(a) hereof, a written order from a Participant or an Indirect Participant given to the Depositary in accordance with the Applicable Procedures directing the Depositary to cause to be issued a Definitive Note in an amount equal to the beneficial interest to be transferred or exchanged and (2) instructions given by the Depositary to the Registrar containing information regarding the Person in whose name such Definitive Note shall be registered to effect the transfer or exchange referred to in (1) above; provided that in no event shall Definitive Notes be issued upon the transfer or exchange of beneficial interests in the Regulation S Temporary Global Note prior to (x) the expiration of the Restricted Period and (y) the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) under the Securities Act. Upon consummation of an Exchange Offer by the Company in accordance with Section 2.07(f) hereof, the requirements of this Section 2.07(b)(ii) shall be deemed to have been satisfied upon receipt by the Registrar of the instructions contained in the Letter of Transmittal delivered by the Holder of such beneficial interests in the Restricted

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Global Notes. Upon satisfaction of all of the requirements for transfer or exchange of beneficial interests in Global Notes contained in this Indenture and the Notes or otherwise applicable under the Securities Act, the Trustee shall adjust the principal amount at maturity of the relevant Global Notes pursuant to Section 2.07(i) hereof.

     (iii) Transfer of Beneficial Interests to Another Restricted Global Note. A beneficial interest in any Restricted Global Note may be transferred to a Person who takes delivery thereof in the form of a beneficial interest in another Restricted Global Note if the transfer complies with the requirements of Section 2.07(b)(ii) above and the Registrar receives the following:

     (A) if the transferee shall take delivery in the form of a beneficial interest in the 144A Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof or, if permitted by the Applicable Procedures, item (3) thereof;

     (B) if the transferee shall take delivery in the form of a beneficial interest in the Regulation S Temporary Global Note or Regulation S Permanent Global Note, as the case may be, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof;

     (C) if the transferee is required by the Applicable Procedures to take delivery in the form of a beneficial interest in the IAI Global Note, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications and certificates and Opinion of Counsel required by item (3) thereof, if applicable.

     (iv) Transfer and Exchange of Beneficial Interests in a Restricted Global Note for Beneficial Interests in the Unrestricted Global Note. A beneficial interest in any Restricted Global Note may be exchanged by any Holder thereof for a beneficial interest in an Unrestricted Global Note or transferred to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note if the exchange or transfer complies with the requirements of Section 2.07(b)(ii) above and:

     (A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with an applicable Registration Rights Agreement and the holder of the beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications required in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement;

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     (B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with an applicable Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with an applicable Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (1) if the Holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a beneficial interest in an Unrestricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(a) thereof; or

     (2) if the Holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of a beneficial interest in an Unrestricted Global Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in clause (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

               If any such transfer is effected pursuant to clause (B) or (D) above at a time when an Unrestricted Global Note has not yet been issued, the Company shall issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of beneficial interests transferred pursuant to clause (B) or (D) above.

     (v) Transfer or Exchange of Beneficial Interests in an Unrestricted Global Note for Beneficial Interests in a Restricted Global Note Prohibited. Beneficial interests in an Unrestricted Global Note cannot be exchanged for, or transferred to Persons who take delivery thereof in the form of, a beneficial interest in a Restricted Global Note.

               (c) Transfer or Exchange of Beneficial Interests for Definitive Notes.

     (i) Beneficial Interests in Restricted Global Notes to Restricted Definitive Notes. Subject to Section 2.07(a) hereof, if any Holder of a beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note or to transfer such beneficial interest to a Person

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who takes delivery thereof in the form of a Restricted Definitive Note, then, upon receipt by the Registrar of the following documentation:

     (A) if the Holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Restricted Definitive Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (2)(a) thereof;

     (B) if such beneficial interest is being transferred to a QIB in accordance with Rule 144A under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

     (C) if such beneficial interest is being transferred to a Non-U.S. Person in an offshore transaction (as defined in Section 902(h) of Regulation S) in accordance with Rule 903 or Rule 904 under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

     (D) if such beneficial interest is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144 under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

     (E) if such beneficial interest is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3)(d) thereof, if applicable;

     (F) if such beneficial interest is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

     (G) if such beneficial interest is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee shall cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.07(i) hereof, and the Company shall execute and the Trustee shall authenticate and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.07(c)(i) shall be registered in such name or names and in such authorized denomination or denominations as the

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Holder of such beneficial interest shall instruct the Registrar through instructions from the Depositary and the Participant or Indirect Participant. The Trustee shall deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest in a Restricted Global Note pursuant to this Section 2.07(c)(i) shall bear the Private Placement Legend and shall be subject to all restrictions on transfer contained therein.

     (ii) Beneficial Interests in Regulation S Temporary Global Note to Definitive Notes. Notwithstanding Sections 2.07(c)(i)(A) and (C) hereof, a beneficial interest in the Regulation S Temporary Global Note may not be exchanged for a Definitive Note or transferred to a Person who takes delivery thereof in the form of a Definitive Note prior to (x) the expiration of the Restricted Period and (y) the receipt by the Registrar of any certificates required pursuant to Rule 903(b)(3)(ii)(B) under the Securities Act, except in the case of a transfer pursuant to an exemption from the registration requirements of the Securities Act other than Rule 903 or Rule 904.

     (iii) Beneficial Interests in Restricted Global Notes to Unrestricted Definitive Notes. Subject to Section 2.07(a) hereof, a Holder of a beneficial interest in a Restricted Global Note may exchange such beneficial interest for an Unrestricted Definitive Note or may transfer such beneficial interest to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note only if:

     (A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with an applicable Registration Rights Agreement and the holder of the beneficial interest, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications required in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement;

     (B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with an applicable Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with an applicable Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (1) if the Holder of such beneficial interest in a Restricted Global Note proposes to exchange such beneficial interest for a Definitive Note that does not bear the Private Placement Legend, a certificate from such Holder in the form of

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Exhibit C hereto, including the certifications in item (1)(b) thereof; or

     (2) if the Holder of such beneficial interest in a Restricted Global Note proposes to transfer such beneficial interest to a Person who shall take delivery thereof in the form of a Definitive Note that does not bear the Private Placement Legend, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this subparagraph (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

          Upon satisfaction of any of the conditions of any of the clauses of this Section 2.07(c)(iii), the Company shall execute and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver a Definitive Note that does not bear the Private Placement Legend in the appropriate principal amount to the Person designated by the holder of such beneficial interest in instructions delivered to the Registrar by the Depositary and the applicable Participant or Indirect Participant on behalf of such holder, and the Trustee shall reduce or cause to be reduced in a corresponding amount pursuant to Section 2.07(i), the aggregate principal amount of the applicable Restricted Global Note.

     (iv) Beneficial Interests in Unrestricted Global Notes to Unrestricted Definitive Notes. If any Holder of a beneficial interest in an Unrestricted Global Note proposes to exchange such beneficial interest for a Definitive Note or to transfer such beneficial interest to a Person who takes delivery thereof in the form of a Definitive Note, then, upon satisfaction of the conditions set forth in Section 2.07(b)(ii) hereof, the Trustee shall cause the aggregate principal amount of the applicable Global Note to be reduced accordingly pursuant to Section 2.07(i) hereof, and the Company shall execute and the Trustee shall authenticate and deliver to the Person designated in the instructions a Definitive Note in the appropriate principal amount. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.07(c)(iv) shall be registered in such name or names and in such authorized denomination or denominations as the Holder of such beneficial interest shall instruct the Registrar through instructions from the Depositary and the Participant or Indirect Participant. The Trustee shall deliver such Definitive Notes to the Persons in whose names such Notes are so registered. Any Definitive Note issued in exchange for a beneficial interest pursuant to this Section 2.07(c)(iv) shall not bear the Private Placement Legend.

                 (d) Transfer and Exchange of Definitive Notes for Beneficial Interests.

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     (i) Restricted Definitive Notes to Beneficial Interests in Restricted Global Notes. If any Holder of a Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note or to transfer such Restricted Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in a Restricted Global Note, then, upon receipt by the Registrar of the following documentation:

     (A) if the Holder of such Restricted Definitive Note proposes to exchange such Note for a beneficial interest in a Restricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (2)(b) thereof;

     (B) if such Restricted Definitive Note is being transferred to a QIB in accordance with Rule 144A under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (1) thereof;

     (C) if such Restricted Definitive Note is being transferred to a Non-U.S. Person in an offshore transaction (as defined in Rule 902(k) of Regulation S) in accordance with Rule 903 or Rule 904 under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (2) thereof;

     (D) if such Restricted Definitive Note is being transferred pursuant to an exemption from the registration requirements of the Securities Act in accordance with Rule 144 under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(a) thereof;

     (E) if such Restricted Definitive Note is being transferred to an Institutional Accredited Investor in reliance on an exemption from the registration requirements of the Securities Act other than those listed in subparagraphs (B) through (D) above, a certificate to the effect set forth in Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3)(d) thereof, if applicable;

     (F) if such Restricted Definitive Note is being transferred to the Company or any of its Subsidiaries, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(b) thereof; or

     (G) if such Restricted Definitive Note is being transferred pursuant to an effective registration statement under the Securities Act, a certificate to the effect set forth in Exhibit B hereto, including the certifications in item (3)(c) thereof,

the Trustee shall cancel the Restricted Definitive Note, increase or cause to be increased the aggregate principal amount of, in the case of clause (A) above, the appropriate Restricted Global Note, in the case of clause (B) above, the 144A

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Global Note, and in the case of clause (C) above, the Regulation S Global Note and in all other cases the IAI Global Note.

     (ii) Restricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of a Restricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Restricted Definitive Note to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note only if:

     (A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with an applicable Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications required in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement;

     (B) such transfer is effected pursuant to a Shelf Registration Statement in accordance with an applicable Registration Rights Agreement;

     (C) such transfer is effected by a Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with an applicable Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (1) if the Holder of such Definitive Notes proposes to exchange such Notes for a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(c) thereof; or

     (2) if the Holder of such Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of a beneficial interest in the Unrestricted Global Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this clause (D), if the Registrar so requests or if the Applicable Procedures so require, an Opinion of Counsel in form reasonably acceptable to the Registrar to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

     Upon satisfaction of any of the conditions of any of the clauses of this Section 2.07(d)(ii), the Trustee shall cancel the Definitive Notes and increase or

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cause to be increased the aggregate principal amount of the Unrestricted Global Note.

     (iii) Unrestricted Definitive Notes to Beneficial Interests in Unrestricted Global Notes. A Holder of an Unrestricted Definitive Note may exchange such Note for a beneficial interest in an Unrestricted Global Note or transfer such Definitive Notes to a Person who takes delivery thereof in the form of a beneficial interest in an Unrestricted Global Note at any time. Upon receipt of a request for such an exchange or transfer, the Trustee shall cancel the applicable Unrestricted Definitive Note and increase or cause to be increased in a corresponding amount the aggregate principal amount of one of the Unrestricted Global Notes pursuant to Section 2.07(i) hereof;

     (iv) Transfer or Exchange of Unrestricted Definitive Notes to Beneficial Interests in Restricted Global Notes Prohibited. An Unrestricted Definitive Note may not be exchanged for, or transferred to Persons who take delivery thereof in the form of, beneficial interests in a Restricted Global Note.

     (v) Issuance of Unrestricted Global Notes. If any such exchange or transfer from a Definitive Note to a beneficial interest is effected pursuant to subparagraphs (ii)(B), (ii)(D) or (iii) above at a time when an Unrestricted Global Note has not yet been issued, the Company shall issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate one or more Unrestricted Global Notes in an aggregate principal amount equal to the principal amount of Definitive Notes so transferred.

          (e) Transfer and Exchange of Definitive Notes for Definitive Notes. Upon request by a Holder of Definitive Notes and such Holder’s compliance with the provisions of this Section 2.07(e), the Registrar shall register the transfer or exchange of Definitive Notes. Prior to such registration of transfer or exchange, the requesting Holder shall present or surrender to the Registrar the Definitive Notes duly endorsed or accompanied by a written instruction of transfer in form satisfactory to the Registrar duly executed by such Holder or by its attorney, duly authorized in writing. In addition, the requesting Holder shall provide any additional certifications, documents and information, as applicable, required pursuant to the following provisions of this Section 2.07(e).

     (i) Restricted Definitive Notes to Restricted Definitive Notes. Any Restricted Definitive Note may be transferred to and registered in the name of Persons who take delivery thereof in the form of a Restricted Definitive Note if the Registrar receives the following:

     (A) if the transfer shall be made pursuant to Rule 144A under the Securities Act, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (1) thereof;

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     (B) if the transfer shall be made pursuant to Rule 903 or Rule 904, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications in item (2) thereof; and

     (C) if the transfer shall be made pursuant to any other exemption from the registration requirements of the Securities Act, then the transferor must deliver a certificate in the form of Exhibit B hereto, including the certifications, certificates and Opinion of Counsel required by item (3) thereof, if applicable.

     (ii) Restricted Definitive Notes to Unrestricted Definitive Notes. Any Restricted Definitive Note may be exchanged by the Holder thereof for an Unrestricted Definitive Note or transferred to a Person or Persons who take delivery thereof in the form of an Unrestricted Definitive Note only if:

     (A) such exchange or transfer is effected pursuant to the Exchange Offer in accordance with an applicable Registration Rights Agreement and the Holder, in the case of an exchange, or the transferee, in the case of a transfer, makes any and all certifications required in the applicable Letter of Transmittal (or is deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement;

     (B) any such transfer is effected pursuant to a Shelf Registration Statement in accordance with an applicable Registration Rights Agreement;

     (C) any such transfer is effected by a Broker-Dealer pursuant to an Exchange Offer Registration Statement in accordance with an applicable Registration Rights Agreement; or

     (D) the Registrar receives the following:

     (1) if the Holder of such Restricted Definitive Notes proposes to exchange such Notes for an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit C hereto, including the certifications in item (1)(d) thereof; or

     (2) if the Holder of such Restricted Definitive Notes proposes to transfer such Notes to a Person who shall take delivery thereof in the form of an Unrestricted Definitive Note, a certificate from such Holder in the form of Exhibit B hereto, including the certifications in item (4) thereof;

and, in each such case set forth in this clause (D), if the Registrar so requests, an Opinion of Counsel in form reasonably acceptable to the Company to the effect that such exchange or transfer is in compliance with the Securities Act and that the restrictions on transfer contained herein and

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in the Private Placement Legend are no longer required in order to maintain compliance with the Securities Act.

          Upon satisfaction of the conditions of any of the clauses of this Section 2.07(e)(ii), the Trustee shall cancel the prior Restricted Definitive Note and the Company shall execute, and upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver an Unrestricted Definitive Note in the appropriate aggregate principal amount to the Person designated by the Holder of such prior Restricted Definitive Note in instructions delivered to the Registrar by such Holder.

     (iii) Unrestricted Definitive Notes to Unrestricted Definitive Notes. A Holder of Unrestricted Definitive Notes may transfer such Notes to a Person who takes delivery thereof in the form of an Unrestricted Definitive Note. Upon receipt of a request to register such a transfer, the Registrar shall register the Unrestricted Definitive Notes pursuant to the instructions from the Holder thereof.

          (f) Exchange Offer. Upon the occurrence of an Exchange Offer in accordance with an applicable Registration Rights Agreement, the Company shall issue and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate (A) one or more Unrestricted Global Notes in an aggregate principal amount equal to the aggregate principal amount of the beneficial interests in the applicable Restricted Global Notes (1) tendered for acceptance by Persons that make any and all certifications in the applicable Letters of Transmittal (or are deemed to have made such certifications if delivery is made through the Applicable Procedures) as may be required by such Registration Rights Agreement and (2) accepted for exchange in such Exchange Offer and (B) Unrestricted Definitive Notes in an aggregate principal amount equal to the aggregate principal amount of the Restricted Definitive Notes tendered for acceptance by Persons who made the foregoing certifications and accepted for exchange in the Exchange Offer. Concurrently with the issuance of such Notes, the Trustee shall reduce or cause to be reduced in a corresponding amount the aggregate principal amount of the applicable Restricted Global Notes, and the Company shall execute and, upon receipt of an Authentication Order in accordance with Section 2.02 hereof, the Trustee shall authenticate and deliver to the Persons designated by the Holders of Restricted Definitive Notes so accepted Unrestricted Definitive Notes in the appropriate aggregate principal amount. Any Notes that remain outstanding after the consummation of an Exchange Offer, and Exchange Notes issued in connection with an Exchange Offer, shall be treated as a single class of securities under this Indenture.

          (g) Legends. The following legends shall appear on the face of all Global Notes and Definitive Notes issued under this Indenture unless specifically stated otherwise in the applicable provisions of this Indenture.

     (i) Private Placement Legend. Except as permitted below, each Global Note and each Definitive Note (and all Notes issued in exchange therefor or substitution thereof) shall bear the legend in substantially the following form:

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     THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS

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LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

     Notwithstanding the foregoing, any Global Note or Definitive Note issued pursuant to subparagraph (b)(iv), (c)(iii), (c)(iv), (d)(ii), (d)(iii), (e)(ii), (e)(iii) or (f) of this Section 2.07 (and all Notes issued in exchange therefor or substitution thereof) (and any note not required by law to have such a legend), shall not bear the Private Placement Legend.

     In addition, the foregoing legend may be adjusted for future issuances in accordance with applicable law.

     (ii) Global Note Legend. Each Global Note shall bear a legend in substantially the following form:

THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.07(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.12 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

          (h) Regulation S Temporary Global Note Legend. The Regulation S Temporary Global Note shall bear a legend in substantially the following form:

THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE NOTES, ARE AS SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN).

          (i) Cancellation and/or Adjustment of Global Notes. At such time as all beneficial interests in a particular Global Note have been exchanged for Definitive Notes or a particular Global Note has been redeemed, repurchased or canceled in whole and not in part, each such Global Note shall be returned to or retained and canceled by the Trustee in accordance with Section 2.12 hereof. At any time prior to such cancellation, if any beneficial interest in a Global Note is exchanged for or transferred to a Person who shall take delivery thereof in the form of a beneficial interest in another Global Note or for Definitive Notes, the principal amount of Notes represented by such Global Note shall be reduced accordingly and an endorsement shall be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee

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to reflect such reduction; and if the beneficial interest is being exchanged for or transferred to a Person who shall take delivery thereof in the form of a beneficial interest in another Global Note, such other Global Note shall be increased accordingly and an endorsement shall be made on such Global Note by the Trustee or by the Depositary at the direction of the Trustee to reflect such increase.

(j) General Provisions Relating to Transfers and Exchanges.

     (i) To permit registrations of transfers and exchanges, the Company shall execute and the Trustee shall authenticate Global Notes and Definitive Notes upon the Company’s order or at the Registrar’s request.

     (ii) No service charge shall be made to a Holder of a beneficial interest in a Global Note or to a Holder of a Definitive Note for any registration of transfer or exchange, but the Company may require payment of a sum sufficient to cover any transfer tax or similar governmental charge payable in connection therewith (other than any such transfer taxes or similar governmental charge payable upon exchange or transfer pursuant to Sections 2.11, 3.06, 4.11, 4.20 and 9.05 hereof).

     (iii) The Registrar shall not be required to register the transfer of or exchange any Note selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part.

     (iv) All Global Notes and Definitive Notes issued upon any registration of transfer or exchange of Global Notes or Definitive Notes shall be the valid and legally binding obligations of the Company, evidencing the same debt, and entitled to the same benefits under this Indenture, as the Global Notes or Definitive Notes surrendered upon such registration of transfer or exchange.

     (v) The Company shall not be required (A) to issue, to register the transfer of or to exchange any Notes during a period beginning at the opening of business 15 days before the day of any selection of Notes for redemption under Section 3.02 hereof and ending at the close of business on the day of selection, (B) to register the transfer of or to exchange any Note so selected for redemption in whole or in part, except the unredeemed portion of any Note being redeemed in part or (C) to register the transfer of or to exchange a Note between a record date and the next succeeding interest payment date.

     (vi) Prior to due presentment for the registration of a transfer of any Note, the Trustee, any Agent and the Company may deem and treat the Person in whose name any Note is registered as the absolute owner of such Note for the purpose of receiving payment of principal of and interest on such Notes and for all other purposes, and none of the Trustee, any Agent or the Company shall be affected by notice to the contrary.

     (vii) The Trustee shall authenticate Global Notes and Definitive Notes in accordance with the provisions of Section 2.02 hereof.

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     (viii) All certifications, certificates and Opinions of Counsel required to be submitted to the Registrar pursuant to this Section 2.07 to effect a registration of transfer or exchange may be submitted by facsimile with the original to follow by first class mail or delivery service.

Section 2.08. Replacement Notes.

          (a) If any mutilated Note is surrendered to the Trustee or the Company and the Trustee receives evidence to their satisfaction of the destruction, loss or theft of any Note, the Company shall issue and the Trustee, upon receipt of an Authentication Order, shall authenticate a replacement Note if the Trustee’s requirements are met. If required by the Trustee or the Company, an indemnity bond must be supplied by the Holder that is sufficient in the judgment of the Trustee and the Company to protect the Company, the Trustee, any Agent and any authenticating agent from any loss that any of them may suffer if a Note is replaced. The Company may charge for their expenses in replacing a Note.

          (b) Every replacement Note is an additional obligation of the Company and shall be entitled to all of the benefits of this Indenture equally and proportionately with all other Notes duly issued hereunder.

Section 2.09. Outstanding Notes.

          (a) The Notes outstanding at any time are all the Notes authenticated by the Trustee except for those canceled by it, those delivered to it for cancellation, those reductions in the interest in a Global Note effected by the Trustee in accordance with the provisions hereof, and those described in this Section as not outstanding. Except as set forth in Section 2.10 hereof, a Note does not cease to be outstanding because the Company or an Affiliate of the Company holds the Note.

          (b) If a Note is replaced pursuant to Section 2.08 hereof, it ceases to be outstanding unless the Trustee receives proof satisfactory to it that the replaced Note is held by a protected purchaser.

          (c) If the principal amount of any Note is considered paid under Section 4.01 hereof, it ceases to be outstanding and interest on it ceases to accrue.

          (d) If the Paying Agent (other than the Company, a Subsidiary of the Company or an Affiliate of any of the foregoing) holds, on a redemption date or maturity date, money sufficient to pay Notes payable on that date, then on and after that date such Notes shall be deemed to be no longer outstanding and shall cease to accrue interest.

Section 2.10. Treasury Notes.

          In determining whether the Holders of the required principal amount of Notes have concurred in any direction, waiver or consent, Notes owned by the Company, or by any Person directly or indirectly controlling or controlled by or under direct or indirect common control with the Company, shall be considered as though not outstanding, except that for the

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purposes of determining whether the Trustee shall be protected in relying on any such direction, waiver or consent, only Notes that the Trustee knows are so owned shall be so disregarded.

Section 2.11. Temporary Notes.

          (a) Until certificates representing Notes are ready for delivery, the Company may prepare and the Trustee, upon receipt of an Authentication Order, shall authenticate temporary Notes. Temporary Notes shall be substantially in the form of Definitive Notes but may have variations that the Company considers appropriate for temporary Notes and as shall be reasonably acceptable to the Trustee. Without unreasonable delay, the Company shall prepare and the Trustee shall authenticate Definitive Notes in exchange for temporary Notes.

          (b) Holders of temporary Notes shall be entitled to all of the benefits of this Indenture.

Section 2.12. Cancellation.

          The Company at any time may deliver Notes to the Trustee for cancellation. The Registrar and Paying Agent shall forward to the Trustee any Notes surrendered to them for registration of transfer, exchange or payment. The Trustee and no one else shall cancel all Notes surrendered for registration of transfer, exchange, payment, replacement or cancellation and shall dispose of canceled Notes in accordance with its procedures for the disposition of canceled securities in effect as of the date of such disposition (subject to the record retention requirement of the Exchange Act). Certification of the disposition of all canceled Notes shall be delivered to the Company. The Company may not issue new Notes to replace Notes that they have paid or that have been delivered to the Trustee for cancellation.

Section 2.13. Defaulted Interest.

          If the Company defaults in a payment of interest on the Notes, it shall pay the defaulted interest in any lawful manner plus, to the extent lawful, interest payable on the defaulted interest, to the Persons who are Holders on the record date for the interest payment or a subsequent special record date, in each case at the rate provided in the Notes and in Section 4.01 hereof. The Company shall notify the Trustee in writing of the amount of defaulted interest proposed to be paid on each Note and the date of the proposed payment. The Company shall fix or cause to be fixed each such special record date and payment date, provided that no such special record date shall be less than 10 days prior to the related payment date for such defaulted interest. At least 15 days before the special record date, the Company (or, upon the written request of the Company, the Trustee in the name and at the expense of the Company) shall mail or cause to be mailed to Holders a notice that states the special record date, the related payment date and the amount of such interest to be paid.

Section 2.14. CUSIP Numbers.

          The Company in issuing the Notes may use “CUSIP” numbers (if then generally in use), and, if so, the Trustee shall use “CUSIP” numbers in notices of redemption as a convenience to Holders; provided that any such notice may state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any notice

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of a redemption and that reliance may be placed only on the other identification numbers printed on the Notes, and any such redemption shall not be affected by any defect in or omission of such numbers. The Company shall promptly notify the Trustee of any change in the “CUSIP” numbers.

Section 2.15. Additional Interest.

          If Additional Interest is payable by the Company pursuant to an applicable Registration Rights Agreement and paragraph 1 of the Notes, no later than 15 days prior to the proposed payment date for such Additional Interest, the Company shall deliver to the Trustee a certificate to that effect stating (i) the amount of such Additional Interest that is payable and (ii) the date on which such interest is payable pursuant to Section 4.01 hereof. If the Company has paid Additional Interest directly to the Persons entitled to it, the Company shall deliver to the Trustee an Officers’ Certificate setting forth the details of such payment.

Section 2.16. Issuance of Additional Notes.

          (a) The Company shall be entitled, subject to its compliance with Article Four hereof, to issue Additional Notes under this Indenture.

          (b) With respect to any Additional Notes, the Company shall set forth in a Board Resolution and an Officers’ Certificate, a copy of each of which shall be delivered to the Trustee, the following information:

     (1) the aggregate principal amount of such Additional Notes to be authenticated and delivered pursuant to this Indenture;

     (2) the issue price, the issue date and the CUSIP and/or ISIN number of such Additional Notes; and

     (3) whether such Additional Notes shall be subject to the restrictions on transfer set forth in Section 2.07 hereof relating to Restricted Global Notes and Restricted Definitive Notes.

ARTICLE THREE
Redemption and Prepayment

Section 3.01. Notices to Trustee.

          If the Company elects to redeem Notes pursuant to the optional redemption provisions of Section 3.07 hereof, it shall furnish to the Trustee, at least 30 days but not more than 60 days before a redemption date, an Officers’ Certificate setting forth (i) the clause of this Indenture pursuant to which the redemption shall occur, (ii) the redemption date, (iii) the principal amount of Notes to be redeemed and (iv) the redemption price.

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Section 3.02. Selection of Notes to Be Redeemed.

          (a) If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be redeemed or purchased among the Holders of the Notes not more than 60 days prior to the redemption date, or otherwise in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance with any other method the Trustee considers fair and reasonable. In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the redemption date by the Trustee from the outstanding Notes not previously called for redemption.

          (b) The Trustee shall promptly notify the Company in writing of the Notes selected for redemption and, in the case of any Note selected for partial redemption, the principal amount at maturity thereof to be redeemed. No Notes in amounts of $1,000 or less shall be redeemed in part. The Trustee may select for redemption portions of the principal of Notes that have denominations larger than $1,000. Notes and portions of Notes selected shall be in amounts of $1,000 or whole multiples of $1,000 in excess thereof; except that if all of the Notes of a Holder are to be redeemed, the entire outstanding amount of Notes held by such Holder, even if not a multiple of $1,000, shall be redeemed. Except as provided in the preceding sentence, provisions of this Indenture that apply to Notes called for redemption also apply to portions of Notes called for redemption. Redemptions pursuant to Section 3.07(b) hereof shall be made on a pro rata basis or on as nearly a pro rata basis as practicable (subject to the provisions of DTC or other depositary).

Section 3.03. Notice of Redemption.

          (a) At least 30 days but not more than 60 days before a redemption date, the Company shall mail or cause to be mailed, by first class mail, a notice of redemption to each Holder whose Notes are to be redeemed at its registered address and send a copy to the Trustee at the same time.

          The notice shall identify the Notes (including CUSIP number(s)) to be redeemed and shall state:

     (i) the redemption date;

     (ii) the redemption price;

     (iii) if any Note is being redeemed in part, the portion of the principal amount at maturity of such Note to be redeemed and that, after the redemption date upon surrender of such Note, a new Note or Notes in principal amount equal to the unredeemed portion of the original Note shall be issued in the name of the Holder thereof upon cancellation of the original Note;

     (iv) the name and address of the Paying Agent;

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     (v) that Notes called for redemption must be surrendered to the Paying Agent to collect the redemption price and become due on the date fixed for redemption;

     (vi) that, unless the Company default in making such redemption payment, interest, if any, on Notes called for redemption ceases to accrue on and after the redemption date;

     (vii) the paragraph of the Notes and/or section of this Indenture pursuant to which the Notes called for redemption are being redeemed; and

     (viii) that no representation is made as to the correctness or accuracy of the CUSIP number, if any, listed in such notice or printed on the Notes.

          (b) At the Company’s request, the Trustee shall give the notice of redemption in the Company’s name and at its expense; provided, however, that the Company shall have delivered to the Trustee, at least 45 days prior to the redemption date (unless the Trustee shall have agreed to a shorter period), an Officers’ Certificate requesting that the Trustee give such notice and setting forth the information to be stated in such notice as provided in the preceding paragraph. The notice, if mailed in the manner provided herein shall be presumed to have been given, whether or not the Holder receives such notice.

Section 3.04. Effect of Notice of Redemption.

          Once notice of redemption is mailed in accordance with Section 3.03 hereof, Notes called for redemption become irrevocably due and payable on the redemption date at the redemption price. A notice of redemption may not be conditional other than in the case of a Change of Control Offer pursuant to Section 4.20 hereof.

Section 3.05. Deposit of Redemption Price.

          (c) One Business Day prior to the redemption date, the Company shall deposit with the Trustee or with the Paying Agent money sufficient to pay the redemption price of and accrued interest on all Notes to be redeemed on that date. The Trustee or the Paying Agent shall promptly return to the Company any money deposited with the Trustee or the Paying Agent by the Company in excess of the amounts necessary to pay the redemption price of, and accrued interest on, all Notes to be redeemed.

          (d) If the Company complies with the provisions of the preceding paragraph, on and after the redemption date, interest shall cease to accrue on the Notes or the portions of Notes called for redemption. If a Note is redeemed on or after an interest record date but on or prior to the related interest payment date, then any accrued and unpaid interest shall be paid to the Holder in whose name such Note was registered at the close of business on such record date. If any Note called for redemption shall not be so paid upon surrender for redemption because of the failure of the Company to comply with the preceding paragraph, interest shall be paid on the unpaid principal, from the redemption date until such principal is paid, and to the extent lawful on any interest not paid on such unpaid principal, in each case at the rate provided in the Notes and in Section 4.01 hereof.

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Section 3.06. Notes Redeemed in Part.

          Upon surrender of a Note that is redeemed in part, the Company shall issue and the Trustee shall authenticate for the Holder at the expense of the Company a new Note equal in principal amount to the unredeemed portion of the Note surrendered. No Notes in denominations of $1,000 or less shall be redeemed in part.

Section 3.07. Optional Redemption.

          (a) On or after May 1, 2010, the Company may redeem all or a portion of the Notes, on not less than 30 nor more than 60 days’ prior notice, in amounts of $1,000 or whole multiples of $1,000 in excess thereof at the following redemption prices (expressed as percentages of the principal amount), set forth below plus accrued and unpaid interest, if any, thereon, to the applicable redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date), if redeemed during the twelve-month period beginning on May 1^st of the years indicated below:

Year	Redemption Price
2010		104.813	%
2011		102.406	%
2012 and thereafter		100.00	%

          (b) In addition, at any time and from time to time prior to May 1, 2009, the Company may use the net proceeds of one or more Equity Offerings to redeem up to an aggregate of 35% of the aggregate principal amount of Notes issued under this Indenture (including the principal amount of any Additional Notes issued under this Indenture) at a redemption price equal to 109.625% of the aggregate principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to the redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date); provided that this redemption provision shall not be applicable with respect to any transaction that results in a Change of Control. At least 65% of the aggregate principal amount of Notes (including the principal amount of any Additional Notes issued under this Indenture) must remain outstanding immediately after the occurrence of such redemption. In order to effect this redemption, the Company must mail a notice of redemption no later than 30 days after the closing of the related Equity Offering and must complete such redemption within 60 days of the closing of the Equity Offering.

          (c) Any redemption pursuant to this Section 3.07 shall be made pursuant to the provisions of Sections 3.01 through 3.06 hereof.

Section 3.08. Mandatory Redemption.

       The Company is not required to make mandatory redemption or sinking fund payments with respect to the Notes.

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Section 3.09. Application of Trust Money.

          All money deposited with the Trustee pursuant to Section 3.05 shall be held in trust and applied by it, in accordance with the provisions of the Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the Company acting as its own Paying Agent) as the Trustee may determine, to the Persons entitled thereto, of the principal (and premium, if any) and interest for whose payment such money has been deposited with the Trustee; but such money need not be segregated from other funds except to the extent required by law.

ARTICLE FOUR
Covenants

Section 4.01. Payment of Notes.

          (a) The Company shall pay or cause to be paid the principal of, premium, if any, and interest on the Notes on the dates and in the manner provided in the Notes. Principal, premium, if any, and interest shall be considered paid on the date due if the Paying Agent, if other than the Company or one of its Subsidiaries, holds as of 1:00 p.m. New York Time on the due date money deposited by the Company in immediately available funds and designated for and sufficient to pay all principal, premium, if any, and interest on the Notes then due. If a payment date is not a Business Day, payment may be made on the next succeeding day that is a Business Day, and no interest shall accrue on such payment for the intervening period. The Company shall pay Additional Interest, if any, on the dates of its choosing in the amounts and in the manner set forth in the Registration Rights Agreement.

          (b) The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal at the rate equal to 1% per annum in excess of the then applicable interest rate on the Notes to the extent lawful; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest (without regard to any applicable grace period) at the same rate to the extent lawful.

Section 4.02. Maintenance of Office or Agency.

          (a) The Company shall maintain an office or agency (which may be an office of the Trustee or an agent of the Trustee, Registrar or co-Registrar) where Notes may be surrendered for registration of transfer or for exchange and where notices and demands to or upon the Company in respect of the Notes and this Indenture may be served. The Company shall give prompt written notice to the Trustee of the location, and any change in the location, of such office or agency. If at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office of the Trustee.

          (b) The Company may also from time to time designate one or more other offices or agencies where the Notes may be presented or surrendered for any or all such purposes and

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may from time to time rescind such designations. The Company shall give prompt written notice to the Trustee of any such designation or rescission and of any change in the location of any such other office or agency.

          (c) The Company hereby designates the Corporate Trust Office of the Trustee as one such office or agency of the Company in accordance with Section 2.04 of this Indenture.

Section 4.03. Reports.

          (a) Whether or not required by the rules and regulations of the Commission, so long as any Notes are outstanding, the Company shall file with the Commission and furnish to the Holders of Notes all quarterly and annual financial information required to be contained in a filing with the Commission on Forms 10-Q and 10-K, including a “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and, with respect to the annual consolidated financial statements only, a report thereon by the Company’s independent auditors.

          (b) So long as any of the Notes remain outstanding, the Company shall furnish to the Holders of the Notes and to prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act.

          (c) The Company shall from time to time furnish to the Trustee any notices of stock exchange listings or delistings as and when required under Section 7.06(b).

Section 4.04. Compliance Certificate.

          (a) The Company shall deliver to the Trustee, within 120 days after the end of each fiscal year, an Officers’ Certificate stating that a review of the activities of the Company and its Subsidiaries during the preceding fiscal year has been made under the supervision of the signing Officers with a view to determining whether the Company has kept, observed, performed and fulfilled its obligations under this Indenture and further stating, as to each such Officer signing such certificate, that to the best of his or her knowledge, the Company has kept, observed, performed and fulfilled its obligations under this Indenture and is not in default in the performance or observance of any of the material terms, provisions and conditions of this Indenture (or, if a Default or Event of Default shall have occurred and be continuing, describing all such Defaults or Events of Default of which he or she may have knowledge and what action the Company is taking or propose to take with respect thereto) and that to the best of his or her knowledge no event has occurred and remains in existence by reason of which payments on account of the principal of, premium, if any, or interest, if any, on the Notes is prohibited or if such event has occurred, a description of the event and what action the Company is taking or proposes to take with respect thereto. To the extent required under the TIA, each Guarantor shall also deliver to the Trustee an Officers’ Certificate meeting the requiremment of this paragraph (a) with respect to such Guarantor.

          (b) If required under Section 314(a) of the TIA, the year-end financial statements delivered pursuant to Section 4.03(a) above shall be accompanied by a written statement of the Company’s independent public accountants (which shall be a firm of established national reputation) that in making the examination necessary for certification of such financial statements, nothing has come to their attention that would lead them to believe that the Company

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has violated any provisions of this Article Four or Article Five hereof or, if any such violation has occurred, specifying the nature and period of existence thereof, it being understood that such accountants shall not be liable directly or indirectly to any Person for any failure to obtain knowledge of any such violation.

          (c) The Company shall, so long as any of the Notes are outstanding, deliver to the Trustee, on or before the fifth Business Day after the occurrence of any Default or Event of Default, an Officers’ Certificate specifying such Default or Event of Default and what action the Company is taking or proposes to take with respect thereto.

Section 4.05. Taxes.

          The Company shall pay, and shall cause each of their respective Subsidiaries to pay, prior to delinquency, any material taxes, assessments, and governmental levies except such as are contested in good faith and by appropriate proceedings or where the failure to effect such payment is not adverse in any material respect to the Holders of the Notes.

Section 4.06. Stay, Extension and Usury Laws.

          The Company and each of the Guarantors covenant (to the extent that they may lawfully do so) that they shall not at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension or usury law wherever enacted, now or at any time hereafter in force, that may affect the covenants or the performance of this Indenture; and the Company and each of the Guarantors (to the extent that they may lawfully do so) hereby expressly waive all benefit or advantage of any such law, and covenant that they shall not, by resort to any such law, hinder, delay or impede the execution of any power herein granted to the Trustee, but shall suffer and permit the execution of every such power as though no such law has been enacted.

Section 4.07. Incurrence of Indebtedness and Issuance of Disqualified Stock.

          (a) The Company shall not, and shall not cause or permit any of its Restricted Subsidiaries to, create, issue, incur, assume, guarantee or otherwise in any manner become directly or indirectly liable for the payment of or otherwise incur, contingently or otherwise (collectively, “incur”), any Indebtedness (including any Acquired Debt and the issuance of Disqualified Stock), unless such Indebtedness is incurred by the Company or any Guarantor and, in each case, the Company’s Consolidated Fixed Charge Coverage Ratio for the most recent four full fiscal quarters for which financial statements are available immediately preceding the incurrence of such Indebtedness taken as one period is at least equal to or greater than 2.5:1.

          (b) Notwithstanding the foregoing, the Company and, to the extent specifically set forth below, the Restricted Subsidiaries may incur each and all of the following (collectively, the “Permitted Debt”):

     (1) Indebtedness of the Company or any Guarantors (whether as borrowers or guarantors) under one or more Credit Facilities in an aggregate principal amount at any one time outstanding not to exceed the greater of (x) $50.0 million, which amount shall be permanently reduced by the amount of Net Available Cash from Asset Sales applied

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by the Company or any Restricted Subsidiary thereof to permanently repay any such Indebtedness, and not subsequently reinvested in Additional Assets, to the extent permitted pursuant to Section 4.11 hereof, and (y) 15.0% of Adjusted Consolidated Net Tangible Assets;

     (2) Indebtedness of the Company or any Guarantor pursuant to the Notes (excluding any Additional Notes) and any Guarantee of the Notes;

     (3) Indebtedness of the Company or any Guarantor outstanding on the date of this Indenture, and not otherwise referred to in this definition of “Permitted Debt;”

     (4) intercompany Indebtedness between or among the Company and any of its Restricted Subsidiaries; provided, however, that:

          (a) if the Company or any Guarantor is the obligor on such Indebtedness, such Indebtedness must be expressly subordinated to the prior payment in full in cash of all Obligations with respect to the Notes, in the case of the Company, or the Guarantee, in the case of a Guarantor, pursuant to an intercompany note in the form of Exhibit G hereto or pursuant to another agreement containing substantially the same subordination provisions as those contained in Section 2.01 of Exhibit G hereto; and

          (b) (i) any subsequent issuance or transfer of Capital Stock that results in any such Indebtedness being held by a Person other than the Company or a Restricted Subsidiary thereof (other than pursuant to a pledge or a similar action under a Credit Facility) and (ii) any sale or other transfer of any such Indebtedness to a Person that is not either the Company or a Restricted Subsidiary thereof, shall be deemed, in each case, to constitute an incurrence of such Indebtedness by the Company or such Restricted Subsidiary, as the case may be, that was not permitted by this clause (4);

     (5) guarantees by (x) the Company, (y) any Guarantor or (z) any Non-Guarantor Restricted Subsidiary (other than the Limited Partners) (if the Consolidated Net Worth of such Non-Guarantor Restricted Subsidiary, together with the Consolidated Net Worth of all other Non-Guarantor Restricted Subsidiaries (other than the Limited Partners), as of such date, does not exceed in the aggregate $5.0 million) of any Indebtedness of the Company or any of the Guarantors which is permitted to be incurred under this Indenture;

     (6) (a) obligations pursuant to Interest Rate Agreements, but only to the extent such obligations do not, on a net basis, exceed 105% of the aggregate principal amount of the Indebtedness covered by such Interest Rate Agreements; (b) obligations under currency exchange contracts entered into in the ordinary course of business; and (c) obligations pursuant to hedging arrangements (including, without limitation, swaps, caps, floors, collars, options and similar agreements) entered into in the ordinary course of business for the purpose of protecting, on a net basis, against price risks, basis risks, or other risks encountered in the Oil and Gas Business;

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     (7) Indebtedness of the Company or any Restricted Subsidiary represented by Capital Lease Obligations (whether or not incurred pursuant to sale and leaseback transactions) or Purchase Money Obligations or other Indebtedness incurred or assumed in connection with the acquisition or development of real or personal, movable or immovable, property in each case incurred for the purpose of financing or refinancing all or any part of the purchase price or cost of construction or improvement of property used in the business of the Company, in an aggregate principal amount pursuant to this clause (7) not to exceed the greater of (x) $10.0 million and (y) 2.5% of Adjusted Consolidated Net Tangible Assets outstanding at any time; provided that the principal amount of any Indebtedness permitted under this clause (7) did not in each case at the time of incurrence exceed the Fair Market Value, as determined by the Company in good faith, of the acquired or constructed asset or improvement so financed;

     (8) Indebtedness of the Company or any Restricted Subsidiary in connection with (a) one or more standby letters of credit issued by the Company or a Restricted Subsidiary in the ordinary course of business and (b) other letters of credit, surety, bid, performance, appeal or similar bonds, bankers’ acceptances, completion guarantees or similar instruments; provided that, in each case contemplated by this clause (8), upon the drawing of such letters of credit or other instrument, such obligations are reimbursed within 30 days following such drawing; provided, further, that with respect to clauses (a) and (b), such Indebtedness is not in connection with the borrowing of money or the obtaining of advances or credit;

     (9) obligations relating to oil or gas balancing positions arising in the ordinary course of business;

     (10) Indebtedness of the Company or any Guarantor to the extent the net proceeds thereof are promptly deposited to defease or satisfy the Notes purusant to Article Eight or Article Eleven;

     (11) Indebtedness of the Company or any Restricted Subsidiary arising from agreements for indemnification or purchase price adjustment obligations or similar obligations, earn-outs or other similar obligations or from guarantees or letters of credit, surety bonds or performance bonds securing any obligation of the Company or a Restricted Subsidiary pursuant to such an agreement, in each case incurred or assumed in connection with the acquisition or disposition of any business, assets or Capital Stock of a Restricted Subsidiary;

     (12) Permitted Refinancing Indebtedness of the Company or any Guarantor issued in exchange for, or the net proceeds of which are used to renew, extend, substitute, refund, refinance or replace, any Indebtedness, including any Disqualified Stock, incurred pursuant to paragraph (a) of this Section 4.07 and clauses (2) and (3) of this paragraph (b) of this definition of “Permitted Debt;” and

     (13) Indebtedness of the Company or any Restricted Subsidiary in addition to that described in clauses (1) through (12) above, and any renewals, extensions, substitutions, refinancings or replacements of such Indebtedness, so long as the aggregate

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principal amount of all such Indebtedness shall not exceed $15.0 million outstanding at any one time in the aggregate.

          (c) For purposes of determining compliance with this Section 4.07, in the event that an item of Indebtedness meets the criteria of more than one of the types of Indebtedness permitted by this Section 4.07, the Company in its sole discretion shall classify or reclassify such item of Indebtedness and only be required to include the amount of such Indebtedness as one of such types (or to divide such Indebtedness between two or more of such types); provided that Indebtedness under the Senior Credit Agreement, if any, which is in existence immediately following the issuance of the Initial Notes, and any renewals, extensions, substitutions, refundings, refinancings or replacements thereof, in an amount not in excess of the amount permitted to be incurred pursuant to clause (1) of paragraph (b) above, shall be deemed to have been incurred pursuant to clause (1) of paragraph (b) above rather than paragraph (a) above.

          (d) Indebtedness permitted by this Section 4.07 need not be permitted solely by reference to one provision permitting such Indebtedness but may be permitted in part by one such provision and in part by one or more other provisions of this Section 4.07 permitting such Indebtedness.

          (e) Accrual of interest, accretion or amortization of original issue discount and the payment of interest on any Indebtedness in the form of additional Indebtedness with the same terms, and the accretion or payment of dividends on any Disqualified Stock or Preferred Stock in the form of additional shares of the same class of Disqualified Stock or Preferred Stock will not be deemed to be an incurrence of Indebtedness for purposes of this Section 4.07; provided, in each such case, that the amount thereof as accrued shall be included as required in the calculation of the Consolidated Fixed Charge Coverage Ratio of the Company.

          (f) For purposes of determining compliance with any dollar-denominated restriction on the incurrence of Indebtedness denominated in a foreign currency, the dollar-equivalent principal amount of such Indebtedness incurred pursuant thereto shall be calculated based on the relevant currency exchange rate in effect on the date that such Indebtedness was incurred.

          (g) If Indebtedness is secured by a letter of credit that serves only to secure such Indebtedness, then the total amount deemed incurred shall be equal to the greater of (x) the principal of such Indebtedness and (y) the amount that may be drawn under such letter of credit.

          (h) The amount of Indebtedness issued at a price less than the amount of the liability thereof shall be determined in accordance with GAAP.

Section 4.08. Restricted Payments.

          (a) The Company shall not, and shall not cause or permit any Restricted Subsidiary to, directly or indirectly:

     (1) pay any dividend on, or make any distribution to holders of, any shares of the Company’s Capital Stock (other than dividends or distributions payable solely in

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shares of the Company’s Qualified Capital Stock or in options, warrants or other rights to acquire shares of such Qualified Capital Stock);

     (2) purchase, redeem, defease or otherwise acquire or retire for value, directly or indirectly, the Company’s Capital Stock or options, warrants or other rights to acquire such Capital Stock;

     (3) make any principal payment on, or repurchase, redeem, defease, retire or otherwise acquire for value, prior to any scheduled principal payment, sinking fund payment or maturity, any Subordinated Indebtedness, except a purchase, repurchase, redemption, defeasance or retirement within one year of final maturity thereof;

     (4) pay any dividend or distribution on any Capital Stock of any Restricted Subsidiary to any Person (other than (a) to the Company or any of its Wholly Owned Restricted Subsidiaries or any Guarantor or (b) dividends or distributions made by a Restricted Subsidiary on a pro rata basis to all stockholders of such Restricted Subsidiary); or

     (5) make any Investment in any Person (other than any Permitted Investments);

(any of the foregoing actions described in clauses (1) through (5) above, other than any such action that is a Permitted Payment (as defined below), collectively, “Restricted Payments”) (the amount of any such Restricted Payment, if other than cash, shall be the Fair Market Value of the assets proposed to be transferred), unless

     (1) immediately after giving effect to such proposed Restricted Payment on a pro forma basis, no Default or Event of Default shall have occurred and be continuing and such Restricted Payment shall not be an event which is, or after notice or lapse of time or both, would be, an “event of default” under the terms of any Indebtedness of the Company or its Restricted Subsidiaries;

     (2) immediately after giving effect to such Restricted Payment on a pro forma basis, the Company could incur $1.00 of additional Indebtedness (other than Permitted Debt) under paragraph (a) of Section 4.07 hereof; and

     (3) after giving effect to the proposed Restricted Payment, the aggregate amount of all such Restricted Payments declared or made after the date of this Indenture and all Designation Amounts does not exceed the sum of:

     (A) 50% of the aggregate Consolidated Net Income of the Company accrued on a cumulative basis during the period beginning on the first day of the Company’s fiscal quarter beginning after the date of this Indenture and ending on the last day of the Company’s last fiscal quarter ending prior to the date of the Restricted Payment (or, if such aggregate cumulative Consolidated Net Income shall be a loss, minus 100% of such loss);

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     (B) the aggregate Net Cash Proceeds, or the Fair Market Value of property other than cash, received after the date of this Indenture by the Company either (1) as capital contributions in the form of common equity to the Company or (2) from the issuance or sale (other than to any of its Subsidiaries) of Qualified Capital Stock of the Company or any options, warrants or rights to purchase such Qualified Capital Stock of the Company (except, in each case, to the extent such proceeds are used to purchase, redeem or otherwise retire Capital Stock or Subordinated Indebtedness as set forth below in clause (2) or (3) of paragraph (b) below) (and excluding the Net Cash Proceeds from the issuance of Qualified Capital Stock financed, directly or indirectly, using funds borrowed from the Company or any Subsidiary until and to the extent such borrowing is repaid);

     (C) the aggregate Net Cash Proceeds received after the date of this Indenture by the Company (other than from any of its Subsidiaries) upon the exercise of any options, warrants or rights to purchase Qualified Capital Stock of the Company (and excluding the Net Cash Proceeds from the exercise of any options, warrants or rights to purchase Qualified Capital Stock financed, directly or indirectly, using funds borrowed from the Company or any Subsidiary until and to the extent such borrowing is repaid);

     (D) the aggregate Net Cash Proceeds received after the date of this Indenture by the Company from the conversion or exchange, if any, of debt securities or Disqualified Stock of the Company or its Restricted Subsidiaries into or for Qualified Capital Stock of the Company plus, to the extent such debt securities or Disqualified Stock were issued after the date of this Indenture, the aggregate of Net Cash Proceeds from their original issuance (and excluding the Net Cash Proceeds from the conversion or exchange of debt securities or Disqualified Stock financed, directly or indirectly, using funds borrowed from the Company or any Subsidiary until and to the extent such borrowing is repaid);

(E) (a) in the case of the disposition or repayment of any Investment constituting a Restricted Payment (including any Investment in an Unrestricted Subsidiary) made after the date of this Indenture, an amount (to the extent not included in Consolidated Net Income) equal to the amount received with respect to such Investment, less the cost of the disposition of such Investment and net of taxes, and

     (b) in the case of the redesignation of an Unrestricted Subsidiary as a Restricted Subsidiary (as long as the designation of such Subsidiary as an Unrestricted Subsidiary was deemed a Restricted Payment), the Fair Market Value of the Company’s interest in such Subsidiary at the time of such redesignation; and

     (F) any amount which previously qualified as a Restricted Payment on account of any guarantee entered into by the Company or any Restricted Subsidiary; provided that such guarantee has not been called upon and the obligation arising under such guarantee no longer exists.

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          (b) Notwithstanding the foregoing, and in the case of clauses (2) through (9) below, so long as no Default or Event of Default is continuing or would arise therefrom, the foregoing provisions shall not prohibit the following actions (each of clauses (1) through (5) being referred to as a “Permitted Payment”):

     (1) the payment of any dividend within 60 days after the date of declaration thereof, if at such date of declaration such payment was permitted by the provisions of paragraph (a) of this Section 4.08 and such payment shall have been deemed to have been paid on such date of declaration and shall not have been deemed a “Permitted Payment” for purposes of the calculation required by paragraph (a) of this Section 4.08;

     (2) the purchase, repurchase, redemption, or other acquisition or retirement for value of any shares of any class of Capital Stock of the Company in exchange for (including any such exchange pursuant to the exercise of a conversion right or privilege in connection with which cash is paid in lieu of the issuance of fractional shares or scrip), or out of the Net Cash Proceeds of a substantially concurrent issuance and sale for cash (other than to a Subsidiary) of, other shares of Qualified Capital Stock of the Company; provided that the Net Cash Proceeds from the issuance of such shares of Qualified Capital Stock shall be excluded from clause (3)(B) of paragraph (a) of this Section 4.08;

     (3) the purchase, repurchase, redemption, defeasance, satisfaction and discharge, retirement or other acquisition for value or payment of principal of any Subordinated Indebtedness in exchange for, or in an amount not in excess of the Net Cash Proceeds of, a substantially concurrent issuance and sale for cash (other than to any Subsidiary of the Company) of any Qualified Capital Stock of the Company, provided that the Net Cash Proceeds from the issuance of such shares of Qualified Capital Stock shall be excluded from clause (3)(B) of paragraph (a) of this Section 4.08;

     (4) the purchase, repurchase, redemption, defeasance, retirement, refinancing, acquisition for value or payment of principal of any Subordinated Indebtedness (other than Disqualified Stock) through the substantially concurrent issuance of Permitted Refinancing Indebtedness;

     (5) any purchase, redemption, retirement, defeasance or other acquisition for value of any Subordinated Indebtedness pursuant to the provisions of such Subordinated Indebtedness upon a Change of Control or an Asset Sale after the Company shall have complied with Section 4.20 or Section 4.11 hereof, as the case may be, and repurchased all Notes validly tendered for payment in connection with the Change of Control Offer or Asset Sale Offer, as the case may be;

     (6) the repurchase, redemption, retirement or other acquisition for value of any Capital Stock of the Company held by any current or former officers, directors or employees of the Company or any of its Subsidiaries (or permitted transferees of such current or former officers, directors or employees) pursuant to the terms of agreements (including employment agreements) or plans approved by the Company’s Board of Directors, including any such repurchase, redemption, acquisition or retirement of shares of such Capital Stock that is deemed to occur upon the exercise of stock options or

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similar rights if such shares represent all or a portion of the exercise price or are surrendered in connection with satisfying Federal income tax obligations; provided, however, that the aggregate amount of such repurchases, redemptions, retirements and acquisitions pursuant to this clause (6) will not, in the aggregate, exceed $1.0 million per fiscal year;

     (7) loans made to officers, directors or employees of the Company or any Restricted Subsidiary approved by the Board of Directors in an aggregate amount not to exceed $1.0 million outstanding at any one time, the proceeds of which are used solely (A) to purchase common stock of the Company in connection with a restricted stock or employee stock purchase plan, or to exercise stock options received pursuant to an employee or director stock option plan or other incentive plan, in a principal amount not to exceed the exercise price of such stock options or (B) to refinance loans, together with accrued interest thereon, made pursuant to item (A) of this clause (7);

     (8) (a) the payment of cash dividends on the Series A Preferred Stock in an amount not exceeding 6% per annum, and (b) the redemption of the Series A Preferred Stock (whether at maturity in October 2010 or prior to such time) in an amount not exceeding $10.1 million plus any accrued and unpaid dividends; and

     (9) Restricted Payments not exceeding $5.0 million in the aggregate.

Section 4.09. Transactions with Affiliates.

          (a) The Company shall not, and shall not cause or permit any of its Restricted Subsidiaries to, directly or indirectly, enter into any transaction or series of related transactions (including, without limitation, the sale, purchase, exchange or lease of assets, property or services) with or for the benefit of any Affiliate of the Company (other than the Company or a Restricted Subsidiary) unless such transaction or series of related transactions is entered into in good faith and in writing and

     (1) such transaction or series of related transactions is on terms that are no less favorable to the Company or such Restricted Subsidiary, as the case may be, than those that would be available in a comparable transaction in arm’s-length dealings with a party who is not an Affiliate of the Company,

     (2) with respect to any transaction or series of related transactions involving aggregate value in excess of $5.0 million,

     (A) the Company delivers an Officers’ Certificate to the Trustee certifying that such transaction or series of related transactions complies with clause (1) above, and

     (B) such transaction or series of related transactions has been approved by a majority of the Disinterested Directors of the Board of Directors of the Company, or in the event there is only one Disinterested Director, by such Disinterested Director, or

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     (3) with respect to any transaction or series of related transactions involving aggregate value in excess of $20.0 million, the Company delivers to the Trustee a written opinion of an investment banking firm of national standing or other recognized independent expert with experience appraising the terms and conditions of the type of transaction or series of related transactions for which an opinion is required stating that the transaction or series of related transactions is fair to the Company or such Restricted Subsidiary from a financial point of view;

     (b) However, paragraph (a) above shall not apply to:

     (1) employee benefit arrangements with any officer or director of the Company, including under any employment agreement, stock option or stock incentive plans, and customary indemnification arrangements with officers or directors of the Company, in each case entered into in the ordinary course of business,

     (2) the payment of reasonable and customary fees to directors of the Company or any of its Restricted Subsidiaries who are not employees of the Company or any Affiliate,

     (3) loans or advances to officers, directors and employees of the Company or any Restricted Subsidiary made in the ordinary course of business in an aggregate amount not to exceed $1.0 million outstanding at any one time,

     (4) any Restricted Payments or Permitted Payments made in compliance with Section 4.08 hereof, and

     (5) any transactions undertaken pursuant to any contracts in existence on the Issue Date (as in effect on the Issue Date) and any renewals, replacements or modifications of such contracts (pursuant to new transactions or otherwise) on terms no less favorable to the Holders of the Notes than those in effect on the Issue Date.

Section 4.10. Liens.

          (a) The Company shall not, and shall not cause or permit any Restricted Subsidiary to, directly or indirectly, create or incur, in order to secure any Indebtedness, any Lien of any kind, other than Permitted Liens, upon any property or assets (including any intercompany notes) of the Company or any Restricted Subsidiary owned on the date of this Indenture or acquired after the date of this Indenture, or assign or convey, in order to secure any Indebtedness, any right to receive any income or profits therefrom, unless the Notes (or a Guarantee in the case of Liens of a Guarantor) are directly secured equally and ratably with (or, in the case of Subordinated Indebtedness, prior or senior thereto, with the same relative priority as the Notes shall have with respect to such Subordinated Indebtedness) the Indebtedness secured by such Lien.

          (b) Notwithstanding the foregoing, any Lien securing the Notes or a Guarantee granted pursuant to paragraph (a) above shall be automatically and unconditionally released and discharged upon: (i) any sale, exchange or transfer to any Person not an Affiliate of the Company of the property or assets secured by such Lien, (ii) any sale, exchange or transfer to

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any Person not an Affiliate of the Company of all of the Capital Stock held by the Company or any Restricted Subsidiary in, or all or substantially all the assets of, any Restricted Subsidiary creating such Lien, or (iii) with respect to any Lien securing a Guarantee, the release of such Guarantee in accordance with this Indenture.

Section 4.11. Asset Sales.

          (a) The Company shall not, and shall not permit any Restricted Subsidiary to, consummate any Asset Sale unless (i) the Company or such Restricted Subsidiary, as the case may be, receives consideration at the time of such Asset Sale at least equal to the Fair Market Value of the assets and property subject to such Asset Sale and (ii) 75% of the consideration paid to the Company or such Restricted Subsidiary in connection with such Asset Sale is in the form of cash, Cash Equivalents, Liquid Securities, Exchanged Properties (including pursuant to asset swaps) or the assumption by the purchaser of liabilities of the Company (other than liabilities of the Company that are by their terms subordinated to the Notes) or liabilities of any Guarantor that made such Asset Sale (other than liabilities of a Guarantor that are by their terms subordinated to such Guarantor’s Guarantee), in each case as a result of which the Company and its remaining Restricted Subsidiaries are no longer liable for such liabilities (“Permitted Consideration”).

          (b) The Net Available Cash from Asset Sales by the Company or a Restricted Subsidiary may be applied by the Company or such Restricted Subsidiary, to the extent the Company or such Restricted Subsidiary elects (or is required by the terms of any Pari Passu Indebtedness of the Company or a Restricted Subsidiary), to:

     (1) repay (or cash-collateralize) Indebtedness of the Company under any Credit Facility;

     (2) reinvest in Additional Assets (including by means of an Investment in Additional Assets by a Restricted Subsidiary with Net Available Cash received by the Company or another Restricted Subsidiary) or make capital expenditures in the Oil and Gas Business; or

     (3) purchase Notes, or purchase or repay on a permanent basis other Indebtedness (excluding (i) any Subordinated Indebtedness and (ii) any Notes or other Indebtedness owned by the Company or an Affiliate of the Company).

          (c) Any Net Available Cash from an Asset Sale not applied in accordance paragraph (b) above within 365 days from the date of such Asset Sale shall constitute “Excess Proceeds.” When the aggregate amount of Excess Proceeds exceeds $10.0 million, the Company will be required to make an offer to purchase Notes having an aggregate principal amount equal to the aggregate amount of Excess Proceeds (the “Prepayment Offer”) at a purchase price (the “Prepayment Offer Price”) equal to 100% of the principal amount of such Notes plus accrued and unpaid interest, if any, to the Asset Sale Purchase Date (as defined in paragraph (d) below) in accordance with the procedures (including prorating in the event of over subscription) set forth in this Indenture, but, if the terms of any Pari Passu Indebtedness require that a Pari Passu Offer be made contemporaneously with the Prepayment Offer, then the Excess Proceeds shall be

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prorated between the Prepayment Offer and such Pari Passu Offer in accordance with the aggregate outstanding principal amounts of the Notes and such Pari Passu Indebtedness, and the aggregate principal amount of Notes for which the Prepayment Offer is made shall be reduced accordingly. If the aggregate principal amount of Notes tendered by Holders thereof exceeds the amount of available Excess Proceeds, then such Excess Proceeds will be allocated pro rata according to the principal amount of the Notes tendered and the Trustee will select the Notes to be purchased in accordance with this Indenture. To the extent that any portion of the amount of Excess Proceeds remains after compliance with the second sentence of this paragraph (c) and provided that all Holders of Notes have been given the opportunity to tender their Notes for purchase as described in paragraph (d) below in accordance with this Indenture, the Company and its Restricted Subsidiaries may use such remaining amount for purposes permitted by this Indenture and the amount of Excess Proceeds will be reset to zero.

          (d) Within 30 days after the 365th day following the date of an Asset Sale, the Company shall, if it is obligated to make an offer to purchase the Notes pursuant to paragraph (c) above, send a written Prepayment Offer notice, by first-class mail, to the Holders of the Notes (the “Prepayment Offer Notice”), accompanied by such information regarding the Company and its Subsidiaries as the Company believes will enable such Holders of the Notes to make an informed decision with respect to the Prepayment Offer. The Prepayment Offer Notice will state, among other things:

     (1) that the Company is offering to purchase Notes pursuant to the provisions of this Indenture;

     (2) that any Note (or any portion thereof) accepted for payment (and duly paid on the Asset Sale Purchase Date) pursuant to the Prepayment Offer shall cease to accrue interest on the Asset Sale Purchase Date;

     (3) that any Notes (or portions thereof) not properly tendered will continue to accrue interest;

     (4) the purchase price and purchase date, which shall be, subject to any contrary requirements of applicable law, no less than 30 days nor more than 60 days after the date the Prepayment Offer Notice is mailed (the “Asset Sale Purchase Date”);

     (5) the aggregate principal amount of Notes to be purchased;

     (6) a description of the procedure which Holders of Notes must follow in order to tender their Notes and the procedures that Holders of Notes must follow in order to withdraw an election to tender their Notes for payment; and

     (7) all other instructions and materials necessary to enable Holders to tender Notes pursuant to the Prepayment Offer.

          (e) If the Company becomes obligated to make a Prepayment Offer pursuant to clause (c) above, the Notes and the Pari Passu Indebtedness shall be purchased by the Company, at the option of the holders thereof, in whole or in part in amounts of $1,000 or whole multiples of $1,000 in excess thereof, on the Asset Sale Purchase Date.

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          (f) The Company shall comply, to the extent applicable, with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws or regulations thereunder to the extent such laws and regulations are applicable in connection with the purchase of Notes as described above. To the extent that the provisions of any securities laws or regulations conflict with the provisions relating to the Prepayment Offer, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under this Section 4.11 by virtue thereof.

          (g) Holders electing to have Notes purchased hereunder will be required to surrender such Notes at the address specified in the notice prior to the Asset Sale Purchase Date. Holders will be entitled to withdraw their election to have their Notes purchased pursuant to this Section 4.11 if the Company receives, not later than one Business Day prior to the Asset Sale Purchase Date, a telegram, telex, facsimile transmission or letter setting forth (1) the name of the Holder, (2) the certificate number of the Note in respect of which such notice of withdrawal is being submitted, (3) the principal amount of the Note (which shall be $1,000 or whole multiples of $1,000 in excess thereof) delivered for purchase by the Holder as to which his election is to be withdrawn, (4) a statement that such Holder is withdrawing his election to have such principal amount of such Note purchased, and (5) the principal amount, if any, of such Note (which shall be $1,000 or whole multiples of $1,000 in excess thereof) that remains subject to the original Prepayment Offer Notice and that has been or will be delivered for purchase by the Company.

          (h) The Company shall (i) not later than the Asset Sale Purchase Date accept for payment Notes or portions thereof tendered pursuant to the Prepayment Offer, (ii) not later than 10:00 a.m. (New York time) on the Asset Sale Purchase Date deposit with the Trustee or with a Paying Agent an amount of money in same day funds sufficient to pay the aggregate Prepayment Offer Price, as the case may be, of all the Notes or portions thereof which are to be purchased on that date and (iii) not later than 10:00 a.m. (New York time) on the Asset Sale Purchase Date, as the case may be, deliver to the Paying Agent an Officers’ Certificate stating the Notes or portions thereof accepted for payment by the Company. The Paying Agent shall promptly mail or deliver to Holders of Notes so accepted payment in an amount equal to the Prepayment Offer Price of the Notes purchased from each such Holder, and the Company shall execute and the Trustee shall promptly authenticate and mail or deliver to such Holders a new Note equal in principal amount to any unpurchased portion of the Note surrendered. Any Notes not so accepted shall be promptly mailed or delivered by the Paying Agent at the Company’s expense to the Holder thereof. For purposes of this Section 4.11, the Company shall choose a Paying Agent which shall not be the Company.

          Subject to applicable escheat laws, the Trustee and the Paying Agent shall return to the Company any cash that remains unclaimed, together with interest, if any, thereon (subject to Section 7.01(f)), held by them for the payment of the Prepayment Offer Price, as the case may be; provided, however, that (x) to the extent that the aggregate amount of cash deposited by the Company with the Trustee in respect of a Prepayment Offer, as the case may be, exceeds the aggregate Prepayment Offer Price of the Notes or portions thereof to be purchased, then the Trustee shall hold such excess for the Company and (y) unless otherwise directed by the Company in writing, promptly after the Business Day following the Asset Sale Purchase Date, as the case may be, the Trustee shall return any such excess to the Company together with interest or dividends, if any, thereon (subject to Section 7.01(f)).

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          (i) Notes to be purchased shall, on the Asset Sale Purchase Date, become due and payable at the Prepayment Offer Price, as the case may be, and from and after such date (unless the Company shall default in the payment of the Prepayment Offer Price) such Notes shall cease to bear interest. Such Prepayment Offer Price shall be paid to such Holder promptly following the later of the Asset Sale Purchase Date and the time of delivery of such Note to the relevant Paying Agent at the office of such Paying Agent by the Holder thereof in the manner required. Upon surrender of any such Note for purchase in accordance with the foregoing provisions, such Note shall be paid by the Company at the Prepayment Offer Price; provided, however, that installments of interest whose Stated Maturity is on or prior to the Asset Sale Purchase Date shall be payable to the Person in whose name the Notes are registered as such on the relevant record dates according to the terms and the provisions of Section 2.04; provided further that Notes to be purchased are subject to proration in the event the Excess Proceeds are less than the aggregate Prepayment Offer Price of all Notes tendered for purchase, with such adjustments as may be appropriate by the Trustee so that only Notes in denominations of $1,000 or whole multiples of $1000 in excess thereof, shall be purchased. If any Note tendered for purchase shall not be so paid upon surrender thereof by deposit of funds with the Trustee or a Paying Agent in accordance with paragraph (i) above, the principal thereof (and premium, if any, thereon) shall, until paid, bear interest from the Asset Sale Purchase Date at the rate borne by such Note. Any Note that is to be purchased only in part shall be surrendered to a Paying Agent at the office of such Paying Agent (with, if the Company, the Registrar or the Trustee so requires, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Registrar or the Trustee duly executed by, the Holder thereof or such Holder’s attorney duly authorized in writing), and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Note, without service charge, one or more new Notes of any authorized denomination as requested by such Holder in an aggregate principal amount equal to, and in exchange for, the portion of the principal amount of the Note so surrendered that is not purchased. The Company shall publicly announce the results of the Prepayment Offer, as the case may be, on or as soon as practicable after the Asset Sale Purchase Date.

Section 4.12. Issuances of Guarantees by Restricted Subsidiaries.

          (a) The Company shall provide to the Trustee, on or prior to the 30th day after the date that (i) any Person becomes a direct or indirect domestic Restricted Subsidiary after the date of this Indenture, (ii) any Unrestricted Subsidiary is redesignated as a Restricted Subsidiary, or (iii) any Restricted Subsidiary (including the Limited Partners) of the Company (which is not a Guarantor) becomes a guarantor or obligor in respect of any Indebtedness of the Company or any of the Restricted Subsidiaries, in each case, a supplemental indenture to this Indenture substantially in the form of Exhibit F hereto, executed by such Restricted Subsidiary, providing for a full and unconditional guarantee on a senior unsecured basis by such Restricted Subsidiary of the Company’s obligations under the Notes and this Indenture to the same extent as that set forth in this Indenture.

          (b) Notwithstanding the foregoing (i) no Foreign Subsidiary shall be required to execute any such supplemental indenture unless such Foreign Subsidiary has guaranteed other Indebtedness of the Company or of a Restricted Subsidiary that is not a Foreign Subsidiary, and (ii) any Non-Guarantor Restricted Subsidiary shall not be required to execute any such

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supplemental indenture if the Consolidated Net Worth of such Non-Guarantor Restricted Subsidiary, together with the Consolidated Net Worth of all other Non-Guarantor Restricted Subsidiaries, as of such date, does not exceed in the aggregate $5.0 million; provided, however, that the Consolidated Net Worth of the Limited Partners shall not be subject to, or included in any calculation with respect to, such $5.0 million limitation. To the extent the collective Consolidated Net Worth of the Company’s Non-Guarantor Restricted Subsidiaries (other than the Limited Partners), as of the date of the creation of, acquisition of or Investment in a Non-Guarantor Restricted Subsidiary, exceeds such $5.0 million limitation, the Company shall cause, within 30 days after such date, one or more of such Non-Guarantor Restricted Subsidiaries to similarly execute and deliver to the Trustee a supplemental indenture to this Indenture substantially in the form of Exhibit F hereto providing for a full and unconditional guarantee on a senior unsecured basis by such Restricted Subsidiary of the Company’s obligations under the Notes and this Indenture to the same extent as that set forth in this Indenture, such that the collective Consolidated Net Worth of all remaining Non-Guarantor Restricted Subsidiaries (other than the Limited Partners) does not exceed $5.0 million.

Section 4.13. Limitation on Issuances and Sales of Preferred Stock of Restricted Subsidiaries.

          (a) The Company shall not permit any Restricted Subsidiary of the Company to issue, sell or transfer any Preferred Stock, except for (1) Preferred Stock issued or sold to, held by or transferred to the Company or a Wholly Owned Restricted Subsidiary or a Guarantor, and (2) Preferred Stock issued by a Person prior to the time (A) such Person becomes a Restricted Subsidiary, (B) such Person merges with or into a Restricted Subsidiary or (C) a Restricted Subsidiary merges with or into such Person; provided that such Preferred Stock was not issued or incurred by such Person in anticipation of the type of transaction contemplated by subclause (A), (B) or (C). This clause (a) shall not apply upon the acquisition of all the outstanding Capital Stock of such Restricted Subsidiary in accordance with the terms of this Indenture.

          (b) The Company shall not permit any Person (other than the Company or a Wholly Owned Restricted Subsidiary or a Guarantor) to acquire Preferred Stock of any Restricted Subsidiary from the Company or any Restricted Subsidiary, except upon the acquisition of all the outstanding Capital Stock of such Restricted Subsidiary in accordance with the terms of this Indenture.

Section 4.14. Dividend and Other Payment Restrictions Affecting Restricted Subsidiaries.

          (a) The Company shall not, and shall not cause or permit any of its Restricted Subsidiaries to, directly or indirectly, create or otherwise cause to come into existence or become effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to:

     (1) pay dividends or make any other distribution on its Capital Stock to the Company or any other Restricted Subsidiary,

     (2) pay any Indebtedness owed to the Company or any other Restricted Subsidiary,

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     (3) make loans or advances to the Company or any other Restricted Subsidiary or

     (4) transfer any of its properties or assets to the Company or any other Restricted Subsidiary.

          (b) However, paragraph (a) above shall not prohibit any encumbrance or restriction created, existing or becoming effective under or by reason of:

     (1) any agreement (including the Senior Credit Agreement) in effect on the date of this Indenture;

     (2) any agreement or instrument with respect to a Restricted Subsidiary that is not a Restricted Subsidiary of the Company on the date of this Indenture, in existence at the time such Person becomes a Restricted Subsidiary of the Company and not incurred in connection with, or in contemplation of, such Person becoming a Restricted Subsidiary, provided that such encumbrances and restrictions are not applicable to the Company or any Restricted Subsidiary or the properties or assets of the Company or any Restricted Subsidiary other than such Subsidiary which is becoming a Restricted Subsidiary;

     (3) any agreement or instrument governing any Acquired Debt or other agreement of any entity or related to assets acquired by or merged into or consolidated with the Company or any Restricted Subsidiaries, so long as such encumbrance or restriction (A) was not entered into in contemplation of the acquisition, merger or consolidation transaction, and (B) is not applicable to any Person, or the properties or assets of any Person, other than the Person, or the property or assets or subsidiaries of the Person, so acquired, so long as the agreement containing such restriction does not violate any other provision of this Indenture;

     (4) any applicable law or any requirement of any regulatory body;

     (5) the security documents evidencing any Liens securing obligations or Indebtedness (provided such Liens are otherwise permitted to be incurred under the provisions of Section 4.10 hereof that limit the right of the debtor to dispose of the assets subject to such Liens;

     (6) provisions restricting subletting or assignment of any lease governing a leasehold interest of the Company or any Restricted Subsidiary, or restrictions in licenses relating to the property covered thereby, or other encumbrances or restrictions in agreements or instruments relating to specific assets or property that restrict generally the transfers of such assets or property, provided, however, that such encumbrances or restrictions do not materially impact the ability of the Company to permit payments on the Notes when due as required by the terms of this Indenture;

     (7) asset sale agreements with respect to asset sales permitted to be made under the provisions of Section 4.11 hereof that limit the transfer of such assets pending the closing of such sale;

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     (8) shareholders’, partnership, joint venture and similar agreements entered into in the ordinary course of business; provided, however, that such encumbrances or restrictions do not apply to any Restricted Subsidiaries other than the applicable company, partnership, joint venture or other entity; and provided, further, however, that such encumbrances and restrictions do not materially impact the ability of the Company to permit payments on the Notes when due as required by the terms of this Indenture;

     (9) cash or other deposits, or net worth requirements or similar requirements, imposed by suppliers or landlords under contracts entered into in the ordinary course of business;

     (10) any other Credit Facility governing debt of the Company or any Guarantor, permitted to be incurred under the provisions of Section 4.07 hereof, provided, however, that such encumbrances or restrictions are not (in the view of the Board of Directors of the Company as expressed in a Board Resolution thereof) materially more restrictive, taken as a whole, than those contained in the Senior Credit Agreement as in effect on the date of this Indenture; and

     (11) any agreement, amendment, modification, restatement, renewal, supplement, refunding, replacement or refinancing that extends, renews, refinances or replaces the agreements containing the encumbrances or restrictions in the foregoing clauses (1) through (10), or in this clause (11), provided that the terms and conditions of any such encumbrances or restrictions are no more restrictive in any material respect taken as a whole than those under or pursuant to the agreement so extended, renewed, refinanced or replaced.

Section 4.15. Sale Leaseback Transactions.

          The Company shall not, and shall not permit any of its Restricted Subsidiaries to, enter into any Sale Leaseback Transaction; provided, that the Company or any of its Restricted Subsidiaries may enter into a Sale Leaseback Transaction if:

          (1) the Company or such Subsidiary could have incurred Indebtedness in an amount equal to the Attributable Indebtedness relating to such Sale Leaseback Transaction pursuant to the Consolidated Fixed Charge Coverage Ratio test set forth in paragraph (a) of Section 4.07 hereof;

          (2) the gross cash proceeds of such Sale Leaseback Transaction are at least equal to the Fair Market Value of the property that is the subject of such Sale Leaseback Transaction; and

          (3) the transfer of assets in such Sale Leaseback Transaction is permitted by, and the Company applies the proceeds of such transaction in the same manner and to the same extent as Net Available Cash and Excess Proceeds from an Asset Sale in compliance with, Section 4.11 hereof.

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Section 4.16. Lines of Business.

          Neither the Company nor any of its Restricted Subsidiaries will directly or indirectly engage in any line or lines of business activity other than that which is an Oil and Gas Business.

Section 4.17. Restrictions on Limited Partners.

          The Company shall not permit either of the Limited Partners to incur any Indebtedness of more than $1.0 million or to hold any Properties other than the limited partner interests in BOG LP, with a Fair Market Value of more than $1.0 million, unless such Limited Partner first provides a full and unconditional Guarantee on a senior unsecured basis of the Company’s obligations under the Notes and this Indenture to the same extent as that set forth in this Indenture (in which event such Limited Partner shall cease to be a Non-Guarantor Restricted Subsidiary).

Section 4.18. Unrestricted Subsidiaries.

          (a) The Board of Directors of the Company may designate after the Issue Date any Subsidiary as an “Unrestricted Subsidiary” under this Indenture (a “Designation”) only if:

     (1) no Default or Event of Default shall have occurred and be continuing at the time of or after giving effect to such Designation;

     (2) (x) the Company would be permitted to make an Investment (other than a Permitted Investment) at the time of Designation (assuming the effectiveness of such Designation) pursuant to paragraph (a) of Section 4.08 hereof in an amount (the “Designation Amount”) equal to the greater of (1) the net book value of the Company’s interest in such Subsidiary calculated in accordance with GAAP or (2) the Fair Market Value of the Company’s interest in such Subsidiary as determined in good faith by the Company’s Board of Directors, or (y) the Designation Amount is less than $1,000;

     (3) the Company would be permitted under this Indenture to incur $1.00 of additional Indebtedness (other than Permitted Debt) pursuant to Section 4.07 hereof at the time of such Designation (assuming the effectiveness of such Designation);

     (4) such Unrestricted Subsidiary does not own any Capital Stock in any Restricted Subsidiary of the Company which is not simultaneously being designated an Unrestricted Subsidiary;

     (5) such Unrestricted Subsidiary is not liable, directly or indirectly, with respect to any Indebtedness other than Unrestricted Subsidiary Indebtedness, provided that an Unrestricted Subsidiary may provide a Guarantee for the Notes; and

     (6) such Unrestricted Subsidiary is not a party to any agreement, contract, arrangement or understanding at such time with the Company or any Restricted Subsidiary unless the terms of any such agreement, contract, arrangement or understanding are no less favorable to the Company or such Restricted Subsidiary than

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those that might be obtained at the time from Persons who are not Affiliates of the Company or, in the event such condition is not satisfied, the value of such agreement, contract, arrangement or understanding to such Unrestricted Subsidiary shall be deemed a Restricted Payment.

          (b) In the event of any such Designation, the Company shall be deemed, for all purposes of this Indenture, to have made an Investment equal to the Designation Amount that constitutes a Restricted Payment pursuant to Section 4.08 hereof.

          (c) The Company shall not and shall not cause or permit any Restricted Subsidiary to at any time

     (1) provide credit support for, guarantee or subject any of its property or assets (other than the Capital Stock of any Unrestricted Subsidiary) to the satisfaction of, any Indebtedness of any Unrestricted Subsidiary (including any undertaking, agreement or instrument evidencing such Indebtedness), provided, however, that this Section 4.18 shall not be deemed to prevent Permitted Investments in Unrestricted Subsidiaries that are otherwise allowed under this Indenture, or

     (2) be directly or indirectly liable for any Indebtedness of any Unrestricted Subsidiary.

          (d) For purposes of the foregoing, the Designation of a Subsidiary of the Company as an Unrestricted Subsidiary shall be deemed to be the Designation of all of the Subsidiaries of such Subsidiary as Unrestricted Subsidiaries. Unless so designated as an Unrestricted Subsidiary, any Person that becomes a Subsidiary of the Company will be classified as a Restricted Subsidiary.

          (e) The Company may revoke any Designation of a Subsidiary as an Unrestricted Subsidiary (a “Revocation”) if:

          (1) no Default or Event of Default shall have occurred and be continuing at the time of and after giving effect to such Revocation;

          (2) all Liens and Indebtedness of such Unrestricted Subsidiary outstanding immediately following such Revocation would, if incurred at such time, have been permitted to be incurred for all purposes of this Indenture; and

          (3) unless such redesignated Subsidiary shall not have any Indebtedness outstanding (other than Indebtedness that would be Permitted Debt), immediately after giving effect to such proposed Revocation, and after giving pro forma effect to the incurrence of any such Indebtedness of such redesignated Subsidiary as if such Indebtedness was incurred on the date of the Revocation, the Company could incur $1.00 of additional Indebtedness (other than Permitted Debt) pursuant to Section 4.07 hereof.

          (f) All Designations and Revocations must be evidenced by a Board Resolution of the Board of Directors of the Company delivered to the Trustee certifying compliance with the foregoing provisions of this Section 4.18.

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Section 4.19. Payments for Consent.

          Neither the Company nor any of its Restricted Subsidiaries shall, directly or indirectly, pay or cause to be paid any consideration, whether by way of interest, fee or otherwise, to any Holder of Notes for or as an inducement to any consent, waiver or amendment of any of the terms or provisions of this Indenture or the Notes unless such consideration is offered to be paid or is paid to all Holders of Notes that consent, waive or agree to amend in the time frame set forth in the solicitation documents relating to such consent, waiver or agreement.

Section 4.20. Offer to Repurchase upon a Change of Control.

          (a) If a Change of Control occurs, each Holder of Notes shall have the right to require that the Company purchase all or any part (in amounts of $1,000 or whole multiples of $1,000 in excess thereof) of such Holder’s Notes pursuant to the offer described below (the “Change of Control Offer”). In the Change of Control Offer, the Company shall offer to purchase all of the Notes, at a purchase price (the “Change of Control Purchase Price”) in cash in an amount equal to 101% of the principal amount of such Notes, plus accrued and unpaid interest, if any, to the date of purchase (the “Change of Control Purchase Date”) (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date).

          (b) Within 30 days after any Change of Control or, at the Company’s option, prior to such Change of Control but after it is publicly announced, the Company must notify the Trustee and give written notice of the Change of Control (the “Change of Control Purchase Notice”) to each Holder of Notes, by first-class mail, postage prepaid, at his address appearing in the security register. The Change of Control Purchase Notice must state, among other things:

     (1) that a Change of Control has occurred or will occur and the date of such event;

     (2) the circumstances and relevant facts regarding such Change of Control, including information with respect to pro forma historical income, cash flow and capitalization after giving effect to such Change of Control;

     (3) the Change of Control Purchase Price and the Change of Control Purchase Date, which shall be fixed by the Company on a Business Day no earlier than 30 days nor later than 60 days from the date the notice is mailed, or such later date as is necessary to comply with requirements under the Exchange Act; provided that the Change of Control Purchase Date may not occur prior to the Change of Control;

     (4) that any Note not tendered will continue to accrue interest;

     (5) that, unless the Company defaults in the payment of the Change of Control Purchase Price, any Notes accepted for payment pursuant to the Change of Control Offer shall cease to accrue interest after the Change of Control Purchase Date; and

     (6) other procedures that a Holder of Notes must follow to accept a Change of Control Offer or to withdraw acceptance of the Change of Control Offer.

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          (c) Upon receipt by the Company of the proper tender of Notes, the Holder of the Note in respect of which such proper tender was made shall (unless the tender of such Note is properly withdrawn at least one Business Day prior to the Change of Control Purchase Date) thereafter be entitled to receive solely the Change of Control Purchase Price with respect to such Notes. Upon surrender of any such Note for purchase in accordance with the foregoing provisions, such Note shall be paid by the Company at the Change of Control Purchase Price; provided, however, that installments of interest whose Stated Maturity is on or prior to the Change of Control Purchase Date shall be payable to the Holders of such Notes, registered as such on the relevant Regular Record Dates according to the terms and the provisions of Section 2.03. If any Note tendered for purchase in accordance with the provisions of this Section 4.20 shall not be so paid upon surrender thereof, the principal thereof (and premium, if any, thereon) shall, until paid, bear interest from the Change of Control Purchase Date at the rate borne by such Note. Holders electing to have Notes purchased will be required to surrender such Notes to the Paying Agent at the address specified in the Change of Control Purchase Notice at least one Business Day prior to the Change of Control Purchase Date. Any Note that is to be purchased only in part shall be surrendered to a Paying Agent at the office of such Paying Agent (with, if the Company, the Registrar or the Trustee so require, due endorsement by, or a written instrument of transfer in form satisfactory to the Company and the Registrar or the Trustee, as the case may be, duly executed by, the Holder thereof or such Holder’s attorney duly authorized in writing), and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Note, without service charge, one or more new Notes of any authorized denomination as requested by such Holder in an aggregate principal amount equal to, and in exchange for, the portion of the principal amount of the Note so surrendered that is not purchased.

          (d) The Company shall (i) not later than the Change of Control Purchase Date, accept for payment Notes or portions thereof tendered pursuant to the Change of Control Offer, (ii) not later than 10:00 a.m. (New York time) on the Business Day following the Change of Control Purchase Date, deposit with the Trustee or with a Paying Agent an amount of money in same day funds sufficient to pay the aggregate Change of Control Purchase Price of all the Notes or portions thereof which have been so accepted for payment and (iii) not later than 10:00 a.m. (New York time) on the Business Day following the Change of Control Purchase Date, deliver to the Paying Agent an Officers’ Certificate stating the Notes or portions thereof accepted for payment by the Company. The Paying Agent shall promptly mail or deliver to Holders of Notes so accepted payment in an amount equal to the Change of Control Purchase Price of the Notes purchased from each such Holder, and the Company shall execute and the Trustee shall promptly authenticate and mail or deliver to such Holders a new Note equal in principal amount to any unpurchased portion of the Note surrendered. Any Notes not so accepted shall be promptly mailed or delivered by the Paying Agent at the Company’s expense to the Holder thereof. The Company will publicly announce the results of the Change of Control Offer on the Change of Control Purchase Date. For purposes of this Section 4.20, the Company shall choose a Paying Agent which shall not be the Company.

          (e) A tender made in response to a Change of Control Purchase Notice may be withdrawn if the Company receives, not later than one Business Day prior to the Change of Control Purchase Date, a telegram, telex, facsimile transmission or letter, specifying, as applicable:

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     (1) the name of the Holder;

     (2) the certificate number of the Note in respect of which such notice of withdrawal is being submitted;

     (3) the principal amount of the Note (which shall be $1,000 or whole multiples of $1,000 in excess thereof) delivered for purchase by the Holder as to which such notice of withdrawal is being submitted;

     (4) a statement that such Holder is withdrawing his election to have such principal amount of such Note purchased; and

     (5) the principal amount, if any, of such Note (which shall be $1,000 or whole multiples of $1,000 in excess thereof) that remains subject to the original Change of Control Purchase Notice and that has been or will be delivered for purchase by the Company.

          (f) Subject to applicable escheat laws, the Trustee and the Paying Agent shall return to the Company any cash that remains unclaimed, together with interest or dividends, if any, thereon (subject to Section 7.01(f) hereof), held by them for the payment of the Change of Control Purchase Price; provided, however, that (x) to the extent that the aggregate amount of cash deposited by the Company pursuant to clause (ii) of paragraph (d) above exceeds the aggregate Change of Control Purchase Price of the Notes or portions thereof to be purchased, then the Trustee shall hold such excess for the Company and (y) unless otherwise directed by the Company in writing, promptly after the Business Day following the Change of Control Purchase Date the Trustee shall return any such excess to the Company together with interest, if any, thereon (subject to Section 7.01(f) hereof).

          (g) The Company shall comply with the applicable tender offer rules, including Rule 14e-1 under the Exchange Act, and any other applicable securities laws or regulations in connection with a Change of Control Offer. To the extent that the provisions of any securities laws or regulations conflict with this Section 4.20, the Company shall comply with the applicable securities laws and regulations and shall not be deemed to have breached its obligations under this Section 4.20 by virtue of such conflict.

          (h) Notwithstanding the foregoing, the Company shall not be required to make a Change of Control Offer upon a Change of Control if a third party makes the Change of Control Offer in the manner, at the times and otherwise in compliance with the requirements set forth in this Indenture applicable to a Change of Control Offer made by the Company and purchases all Notes validly tendered and not withdrawn under such Change of Control Offer.

Section 4.21. Corporate Existence.

          Subject to Article Five, the Company shall do or cause to be done all things necessary to preserve and keep in full force and effect the corporate existence, rights (charter and statutory) and franchises of the Company and each Subsidiary; provided that the Company shall not be required to preserve any such right or franchise or to preserve the existence of any Subsidiary if the Board of Directors of the Company shall determine that the preservation thereof

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is no longer desirable in the conduct of the business of the Company and its Subsidiaries as a whole and that the loss thereof is not disadvantageous in any material respect to the Holders.

ARTICLE FIVE
Successors

Section 5.01. Consolidation, Merger and Sale of Assets.

          (a) The Company will not, in a single transaction or through a series of related transactions, consolidate with or merge with or into any other Person or sell, assign, convey, transfer, lease or otherwise dispose of all or substantially all of its properties and assets to any Person or group of Persons, or permit any of its Restricted Subsidiaries to enter into any such transaction or series of transactions, if such transaction or series of transactions, in the aggregate, would result in a sale, assignment, conveyance, transfer, lease or disposition of all or substantially all of the properties and assets of the Company and its Restricted Subsidiaries on a Consolidated basis to any other Person or group of Persons (other than the Company or a Guarantor), unless at the time and after giving effect thereto:

     (1) either (a) the Company will be the continuing corporation or (b) the Person (if other than the Company) formed by such consolidation or into which the Company is merged or the Person which acquires by sale, assignment, conveyance, transfer, lease or disposition all or substantially all of the properties and assets of the Company and its Restricted Subsidiaries on a Consolidated basis (the “Surviving Entity”) will be a corporation, limited liability company or limited partnership (provided that in the event the Surviving Entity is a limited partnership, then a Subsidiary of the Surviving Entity that is a corporation or limited liability company shall execute a supplemental indenture pursuant to which it shall become a co-obligor of the Surviving Entity’s obligations under the Notes and this Indenture) duly organized and validly existing under the laws of the United States of America, any state thereof or the District of Columbia and such Person expressly assumes, by a supplemental indenture, in a form reasonably satisfactory to the Trustee, all the obligations of the Company under the Notes and this Indenture, and the Notes and this Indenture will remain in full force and effect as so supplemented (and any Guarantees will be confirmed as applying to such Surviving Entity’s obligations);

     (2) immediately after giving effect to such transaction on a pro forma basis (and treating any Indebtedness not previously an obligation of the Company or any of its Restricted Subsidiaries which becomes the obligation of the Company or any of its Restricted Subsidiaries as a result of such transaction as having been incurred at the time of such transaction), no Default or Event of Default will have occurred and be continuing;

     (3) immediately after giving effect to such transaction on a pro forma basis (on the assumption that the transaction occurred on the first day of the four-quarter period for which financial statements are available ending immediately prior to the consummation of such transaction with the appropriate adjustments with respect to the transaction being included in such pro forma calculation), the Company (or the Surviving

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Entity if the Company is not the continuing obligor under this Indenture) could on the first day following such four-quarter period incur $1.00 of additional Indebtedness (other than Permitted Debt) under Section 4.07 hereof;

     (4) at the time of the transaction, each Guarantor, if any, unless it is the other party to the transactions described above, will have by supplemental indenture confirmed that its Guarantee shall apply to such Person’s obligations under this Indenture and the Notes;

     (5) at the time of the transaction, if any of the property or assets of the Company or any of its Restricted Subsidiaries would thereupon become subject to any Lien, Section 4.10 hereof is complied with; and

     (6) at the time of the transaction, the Company or the Surviving Entity will have delivered, or caused to be delivered, to the Trustee, in form and substance reasonably satisfactory to the Trustee, an Officers’ Certificate and an Opinion of Counsel, each to the effect that such consolidation, merger, transfer, sale, assignment, conveyance, transfer, lease or other transaction and the supplemental indenture in respect thereof comply with this Indenture.

          (b) Except as provided under Section 10.04 hereof, each Guarantor will not, and the Company will not permit a Guarantor to, in a single transaction or through a series of related transactions, (x) consolidate with or merge with or into any other Person (other than the Company or any other Guarantor or a Non-Guarantor Restricted Subsidiary, so long as such Non-Guarantor Restricted Subsidiary is not the continuing Person) or (y) sell, assign, convey, transfer, lease or otherwise dispose of all or substantially all of its properties and assets to any Person or group of Persons (other than the Company or any other Guarantor) or permit any of its Restricted Subsidiaries to enter into any such transaction or series of transactions if such transaction or series of transactions, in the aggregate, in the case of clause (y) would result in a sale, assignment, conveyance, transfer, lease or disposition of all or substantially all of the properties and assets of the Guarantor and its Restricted Subsidiaries on a Consolidated basis to any other Person or group of Persons (other than the Company or any Guarantor), unless at the time and after giving effect thereto:

     (1) either (a) the Guarantor or the Company will be the continuing Person in the case of a consolidation or merger involving the Guarantor or (b) the Person (if other than the Guarantor) formed by such consolidation or into which such Guarantor is merged or the Person which acquires by sale, assignment, conveyance, transfer, lease or disposition of all or substantially all of the properties and assets of the Guarantor and its Restricted Subsidiaries on a Consolidated basis (the “Surviving Guarantor Entity”) will be a corporation, limited liability company, limited liability partnership, partnership, trust or other entity duly organized and validly existing under the laws of the United States of America, any state thereof or the District of Columbia and such Person expressly assumes, by a supplemental indenture, in a form reasonably satisfactory to the Trustee, all the obligations of such Guarantor under its Guarantee of the Notes and this Indenture, and such Guarantee and this Indenture will remain in full force and effect;

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     (2) immediately before and immediately after giving effect to such transaction on a pro forma basis, no Default or Event of Default will have occurred and be continuing; and

     (3) at the time of the transaction such Guarantor or the Surviving Guarantor Entity will have delivered, or caused to be delivered, to the Trustee, in form and substance reasonably satisfactory to the Trustee, an Officers’ Certificate and an Opinion of Counsel, each to the effect that such consolidation, merger, transfer, sale, assignment, conveyance, lease or other transaction and the supplemental indenture in respect thereof comply with this Indenture;

provided, however, that this paragraph (b) shall not apply to any Guarantor whose Guarantee of the Notes is unconditionally released and discharged in accordance with Section 10.04 hereof.

          (c) In the event of any transaction (other than a lease) described in and complying with the conditions listed in paragraphs (a) and (b) above in which the Company or any Guarantor, as the case may be, is not the continuing Person, the successor Person formed or remaining or to which such transfer is made shall succeed to, and be substituted for, and may exercise every right and power of, the Company or such Guarantor, as the case may be, and the Company or any Guarantor, as the case may be, shall be discharged (other than in a transaction that results in the transfer of assets constituting or accounting for less than 95% of the Consolidated assets (as of the last balance sheet date available to the Company) of the Company or the Consolidated revenue of the Company (as of the last 12-month period for which financial statements are available)) from all obligations and covenants under this Indenture and the Notes or its Guarantee, as the case may be.

          (d) Notwithstanding the foregoing, the Company or any Guarantor may merge with an Affiliate incorporated or organized solely for the purpose of reincorporating or reorganizing the Company or Guarantor in another jurisdiction to realize tax or other benefits.

ARTICLE SIX
Defaults and Remedies

Section 6.01. Events of Default.

          An Event of Default will occur under this Indenture (whatever the reason for such Event of Default and whether it shall be voluntary or involuntary or be effected by operation of law or pursuant to any judgment, decree or order of any court or any order, rule or regulation of any administrative or governmental body) if:

     (1) there shall be a default in the payment of any interest on any Note when it becomes due and payable, and such default shall continue for a period of 30 days;

     (2) there shall be a default in the payment of the principal of (or premium, if any, on) any Note at its Maturity (upon acceleration, optional or mandatory redemption, if any, required repurchase or otherwise);

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     (3) there shall be a default in the performance or breach of the provisions of Article Five, the Company shall have failed to make or consummate a Prepayment Offer in accordance with Section 4.11 hereof, or the Company shall have failed to make or consummate a Change of Control Offer in accordance with Section 4.20 hereof;

     (4) there shall be a default in the performance, or breach, of any covenant or agreement of the Company or any Guarantor under this Indenture or any Guarantee (other than a default in the performance, or breach, of a covenant or agreement which is specifically dealt with in clause (1), (2) or (3) above) and such default or breach shall continue for a period of 60 days after written notice has been given, by certified mail, (1) to the Company by the Trustee or (2) to the Company and the Trustee by the Holders of at least 25% in aggregate principal amount of the outstanding Notes;

     (5) (a) any default in the payment of the principal, premium, if any, or interest on any Indebtedness shall have occurred under any of the agreements, indentures or instruments under which the Company, any Guarantor or any other Significant Subsidiary then has outstanding Indebtedness in excess of $15.0 million when the same shall become due and payable in full and such default shall have continued after any applicable grace period and shall not have been cured or waived and, if not already matured at its final maturity in accordance with its terms, the holder of such Indebtedness shall have the right to accelerate such Indebtedness or (b) an event of default as defined in any of the agreements, indentures or instruments described in clause (a) of this clause (5) shall have occurred and the Indebtedness thereunder, if not already matured at its final maturity in accordance with its terms, shall have been accelerated;

     (6) any Guarantee shall for any reason cease to be, or shall for any reason be asserted in writing by any Guarantor or the Company not to be, in full force and effect and enforceable in accordance with its terms, except to the extent contemplated by this Indenture and any such Guarantee;

     (7) one or more judgments, orders or decrees of any court or regulatory or administrative agency for the payment of money in excess of $15.0 million, either individually or in the aggregate, shall be rendered against the Company, any Guarantor or any other Significant Subsidiary or any of their respective properties and shall not be discharged and either (a) any creditor shall have commenced an enforcement proceeding upon such judgment, order or decree or (b) there shall have been a period of 60 consecutive days during which a stay of enforcement of such judgment or order, by reason of an appeal or otherwise, shall not be in effect;

     (8) the entry of a decree or order by a court having jurisdiction in the premises adjudging the Company or any Significant Subsidiary bankrupt or insolvent, or approving as properly filed a petition seeking reorganization, arrangement, adjustments or composition of or in respect of the Company or any Significant Subsidiary under any Bankruptcy Law, or appointing a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of the Company or any Significant Subsidiary or of any substantial part of its property, or ordering the winding up or liquidation of its affairs, and the

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continuance of any such decree or order unstayed and in effect for a period of 90 consecutive days; or

     (9) the institution by the Company or any Significant Subsidiary of proceedings to be adjudicated bankrupt or insolvent, or the consent by it to the institution of bankruptcy or insolvency proceedings against it, or the filing by it of a petition or answer or consent seeking reorganization or relief under any Bankruptcy Law, or the consent by it to the filing of any such petition or to the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of the Company or any Significant Subsidiary or of any substantial part of its property, or the making by it of an assignment for the benefit of creditors, or the admission by it in writing of its inability to pay its debts generally as they become due.

Section 6.02. Acceleration.

          (a) If an Event of Default (other than as specified in Section 6.01(8) or (9) above) shall occur and be continuing with respect to this Indenture, the Trustee or the Holders of not less than 25% in aggregate principal amount of the Notes then outstanding may, and the Trustee at the request of such Holders shall, declare all unpaid principal of, premium, if any, and accrued interest on all Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee if given by the Holders of the Notes) and upon any such declaration, such principal, premium, if any, and interest shall become due and payable immediately. If an Event of Default specified in Section 6.01(8) or (9) above occurs and is continuing, then all the Notes shall ipso facto become due and payable immediately in an amount equal to the principal amount of the Notes, together with accrued and unpaid interest, if any, to the date the Notes become due and payable, without any declaration or other act on the part of the Trustee or any Holder of Notes. Thereupon, the Trustee may, at its discretion, proceed to protect and enforce the rights of the Holders of Notes by appropriate judicial proceedings.

          (b) After a declaration of acceleration, but before a judgment or decree for payment of the money due has been obtained by the Trustee, the Holders of a majority in aggregate principal amount of Notes outstanding by written notice to the Company and the Trustee, may rescind and annul such declaration and its consequences if:

     (1) the Company has paid or deposited with the Trustee a sum sufficient to pay (A) all sums paid or advanced by the Trustee under this Indenture and the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, (B) all overdue interest on all Notes then outstanding, (C) the principal of, and premium, if any, on any Notes then outstanding which have become due otherwise than by such declaration of acceleration and interest thereon at the rate borne by the Notes and (D) to the extent that payment of such interest is lawful, interest upon overdue interest at the rate borne by the Notes;

     (2) the rescission would not conflict with any judgment or decree of a court of competent jurisdiction; and

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     (3) all Events of Default, other than the non-payment of principal of, premium, if any, and interest on the Notes which have become due solely by such declaration of acceleration, have been cured or waived as provided in this Indenture.

          No such rescission shall affect any subsequent default or impair any right consequent thereon.

          (c) In the case of any Event of Default occurring by reason of any willful action or inaction taken or not taken by or on behalf of the Company with the intention of avoiding payment of the premium that the Company would have had to pay if the Company then had elected to redeem the Notes pursuant to the optional redemption provisions of this Indenture, an equivalent premium shall also become and be immediately due and payable to the extent permitted by law upon the acceleration of the Notes. If an Event of Default occurs during any time that the Notes are outstanding, by reason of any willful action (or inaction) taken (or not taken) by or on behalf of the Company with the intention of avoiding the premium payable upon optional redemption of the Notes, then the premium specified in this Indenture shall also become immediately due and payable to the extent permitted by law upon the acceleration of the Notes.

Section 6.03. Other Remedies.

          (a) If an Event of Default occurs and is continuing, the Trustee may pursue any available remedy to collect the payment of principal, premium, if any, or interest on the Notes or to enforce the performance of any provision of the Notes or this Indenture.

          (b) The Trustee may maintain a proceeding even if it does not possess any of the Notes or does not produce any of them in the proceeding. A delay or omission by the Trustee or any Holder of a Note in exercising any right or remedy accruing upon and during the continuance of an Event of Default shall not impair the right or remedy or constitute a waiver of or acquiescence in the Event of Default. All remedies are cumulative to the extent permitted by law.

Section 6.04. Waiver of Past Defaults.

          The Holders of not less than a majority in aggregate principal amount of the Notes outstanding may on behalf of the Holders of all outstanding Notes waive any past Default or Event of Default under this Indenture and its consequences, except a Default or Event of Default (1) in the payment of the principal of, premium, if any, or interest on any Note (which may only be waived with the consent of each Holder of Notes affected) or (2) in respect of a covenant or provision which under this Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment. The Company shall deliver to the Trustee an Officers’ Certificate stating that the requisite percentage of Holders have consented to such waiver and attaching copies of such consents. In case of any such waiver, the Company, the Trustee and the Holders shall be restored to their former positions and rights hereunder and under the Notes, respectively. This Section 6.04 shall be in lieu of Section 316(a)(1)(B) of the TIA and such Section 316(a)(1)(B) of the TIA is hereby expressly excluded from this Indenture and the Notes, as permitted by the TIA. Upon any such waiver, such Default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been

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cured for every purpose of this Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent thereon.

Section 6.05. Control by Majority.

          Holders of a majority in principal amount of the then outstanding Notes may direct the time, method and place of conducting any proceeding for exercising any remedy available to the Trustee or exercising any trust or power conferred on it. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture or that the Trustee determines may be unduly prejudicial to the rights of other Holders of Notes or that may involve the Trustee in personal liability. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest) if it determines that withholding notice is in their interest.

Section 6.06. Limitation on Suits.

          (a) A Holder has a right to institute any proceeding with respect to this Indenture, or the Notes or any Guarantees, only if:

     (1) the Holder gives to the Trustee written notice of a continuing Event of Default;

     (2) the Holders of at least 25% in aggregate principal amount of the then outstanding Notes make a written request to the Trustee to pursue the remedy;

     (3) such Holder of a Note or Holders of Notes offer and, if requested, provide to the Trustee reasonable indemnity against any loss, liability or expense that might be incurred by it in connection with the request or direction;

     (4) the Trustee does not comply with the request within 15 days after receipt of the request and the offer and, if requested, the provision of indemnity; and

     (5) during such 15-day period the Holders of a majority in principal amount of the then outstanding Notes do not give the Trustee a direction inconsistent with the written request.

          (b) A Holder of a Note may not use this Indenture to prejudice the rights of another Holder of a Note or to obtain a preference or priority over another Holder of a Note.

Section 6.07. Rights of Holders of Notes to Receive Payment.

          Notwithstanding any other provision of this Indenture, the right of any Holder of a Note to receive payment of principal, premium, if any, or interest on such Note, on or after the respective due dates expressed in such Note (including in connection with an offer to purchase), or to bring suit for the enforcement of any such payment on or after such respective dates, shall not be impaired or affected without the consent of such Holder.

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Section 6.08. Collection Suit by Trustee.

          If an Event of Default specified in Section 6.01(1) or (2) above occurs and is continuing, the Trustee is authorized to recover judgment in its own name and as trustee of an express trust against the Company for the whole amount of overdue principal of, premium, if any, interest remaining unpaid on the Notes and interest on overdue principal and premium, if any, and, to the extent lawful, interest and such further amount as shall be sufficient to cover the costs and expenses of collection, including the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel.

Section 6.09. Trustee May File Proofs of Claim.

          The Trustee is authorized to file such proofs of claim and other papers or documents as may be necessary or advisable in order to have the claims of the Trustee (including any claim for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel) and the Holders of the Notes allowed in any judicial proceedings relative to the Company or any Guarantor (or any other obligor upon the Notes), its creditors or its property and shall be entitled and empowered to collect, receive and distribute any money or other securities or property payable or deliverable on any such claims and any custodian in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee, and in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay to the Trustee any amount due to it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof. To the extent that the payment of any such compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the Trustee under Section 7.07 hereof out of the estate in any such proceeding, shall be denied for any reason, payment of the same shall be secured by a Lien on, and shall be paid out of, any and all distributions, dividends, money, securities and other properties that the Holders may be entitled to receive in such proceeding whether in liquidation or under any plan of reorganization or arrangement or otherwise. Nothing herein contained shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Notes or the rights of any Holder, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding.

Section 6.10. Priorities.

          (a) If the Trustee collects any money or other property pursuant to this Article Six, it shall pay out the money and other property in the following order:

          First: to the Trustee, its agents and attorneys for amounts due under Section 7.07 hereof, including payment of all compensation, expense and liabilities incurred, and all advances made, by the Trustee and the costs and expenses of collection;

          Second: to Holders of Notes for amounts due and unpaid on the Notes for principal, premium, if any, interest ratably, without preference or priority of any kind, according

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to the amounts due and payable on the Notes for principal, premium, if any, and interest, respectively; and

          Third: to the Company or to such party as a court of competent jurisdiction shall direct.

          (b) The Trustee may fix a record date and payment date for any payment to Holders of Notes pursuant to this Section 6.10.

Section 6.11. Undertaking for Costs.

          In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as a Trustee, a court in its discretion may require the filing by any party litigant in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable attorneys’ fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section does not apply to a suit by the Trustee, a suit by a Holder of a Note pursuant to Section 6.07 hereof, or a suit by Holders of more than ten percent in principal amount of the then outstanding Notes.

ARTICLE SEVEN
Trustee

Section 7.01. Duties of Trustee.

          (a) If an Event of Default has occurred and is continuing, and is actually known to the Trustee, the Trustee shall exercise such of the rights and powers vested in it by this Indenture, and use the same degree of care and skill in its exercise, as a prudent person would exercise or use under the circumstances in the conduct of such person’s own affairs.

          (b) Except during the continuance of an Event of Default:

     (i) the duties of the Trustee shall be determined solely by the express provisions of this Indenture and the Trustee need perform only those duties that are specifically set forth in this Indenture and no others, and no implied covenants or obligations shall be read into this Indenture against the Trustee; and

     (ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, the Trustee shall examine the certificates and opinions to determine whether or not they conform on their face to the requirements of this Indenture.

          (c) The Trustee may not be relieved from liabilities for its own negligent action, its own negligent failure to act, or its own willful misconduct, except that:

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     (i) this paragraph does not limit the effect of paragraph (b) of this Section 7.01;

     (ii) the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer, unless it is proved that the Trustee was negligent in ascertaining the pertinent facts; and

     (iii) the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in accordance with a direction received by it pursuant to Section 6.05 hereof.

          (d) Whether or not therein expressly so provided, every provision of this Indenture that in any way relates to the Trustee is subject to paragraphs (a), (b) and (c) of this Section 7.01.

          (e) No provision of this Indenture shall require the Trustee to expend or risk its own funds or incur any liability. The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders unless such Holders shall have offered to the Trustee security or indemnity reasonably satisfactory to it against the costs, expenses and liabilities that might be incurred by it in compliance with such request or direction.

          (f) Money held in trust by the Trustee need not be segregated from other funds and need not be held in an interest-bearing account, in each case except to the extent required by law or by any other provision of this Indenture. The Trustee (acting in any capacity hereunder) shall not be liable for interest on any money received by it hereunder unless the Trustee otherwise agrees in writing with the Company.

Section 7.02. Certain Rights of Trustee.

          (a) The Trustee may conclusively rely upon any document believed by it to be genuine and to have been signed or presented by the proper Person. The Trustee need not investigate any fact or matter stated in the document.

          (b) Before the Trustee acts or refrains from acting, it may require an Officers’ Certificate or an Opinion of Counsel or both. The Trustee shall not be liable for any action it takes or omits to take in good faith in reliance on such Officers’ Certificate or Opinion of Counsel. The Trustee may consult with counsel and the advice of such counsel or any Opinion of Counsel shall be full and complete authorization and protection from liability in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon.

          (c) The Trustee may act through its attorneys and agents and shall not be responsible for the misconduct or negligence of any agent appointed with due care.

          (d) The Trustee shall not be liable for any action it takes or omits to take in good faith that it believes to be authorized or within the rights or powers conferred upon it by this Indenture.

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          (e) Unless otherwise specifically provided in this Indenture, any demand, request, direction or notice from the Company shall be sufficient if signed by an Officer of the Company.

          (f) The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request or direction of any of the Holders unless such Holders shall have offered to the Trustee security or indemnity reasonably satisfactory to it against the costs, expenses and liabilities that might be incurred by it in compliance with such request or direction.

          (g) The Trustee shall not be deemed to have notice of any Default or Event of Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of such event is sent to the Trustee in accordance with Section 12.02 hereof, and such notice references the Notes.

          (h) Subject to Section 7.01(b)(ii) hereof, the Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit.

          (i) The rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and to each agent, custodian and other Person employed to act hereunder.

Section 7.03. Individual Rights of Trustee.

          The Trustee in its individual or any other capacity may become the owner or pledgee of Notes and may become a creditor of, or otherwise deal with, the Company or any of its Affiliates with the same rights it would have if it were not Trustee. However, in the event that the Trustee acquires any conflicting interest as described in the TIA, it must eliminate such conflict within 90 days, apply to the Commission for permission to continue as trustee or resign. Any Agent may do the same with like rights and duties. The Trustee is also subject to Sections 7.10 and 7.11 hereof.

Section 7.04. Trustee’s Disclaimer.

          The Trustee shall not be responsible for and makes no representation as to the validity or adequacy of this Indenture, it shall not be accountable for the Company’s use of the proceeds from the Notes or any money paid to the Company or upon the Company’s direction under any provision of this Indenture, it shall not be responsible for the use or application of any money received by any Paying Agent other than the Trustee, and it shall not be responsible for any statement or recital herein or any statement in the Notes or any other document in connection with the sale of the Notes or pursuant to this Indenture other than its certificate of authentication.

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Section 7.05. Notice of Default.

          If a Default or Event of Default occurs and is continuing and if it is known to the Trustee, the Trustee shall mail to Holders of Notes a notice of the Default or Event of Default within 90 days after the Trustee gains knowledge of the Default or Event of Default unless such Default or Event of Default shall have been cured or waived before the giving of such notice. Except in the case of a Default or Event of Default in payment of principal of, premium or interest on any Note, the Trustee may withhold the notice if and so long as a committee of its Responsible Officers in good faith determines that withholding the notice is in the interests of the Holders of the Notes.

Section 7.06. Reports by Trustee to Holders of the Notes.

          (a) Within 60 days after each May 15 beginning with the May 15 following the date hereof, and for so long as Notes remain outstanding, the Trustee shall mail to the Holders of the Notes a brief report dated as of such reporting date that complies with TIA Section 313(a) (but if no event described in TIA Section 313(a) has occurred within the twelve months preceding the reporting date, no report need be transmitted). The Trustee also shall comply with TIA Section 313(b)(2). The Trustee shall also transmit by mail all reports as required by TIA Section 313(c).

          (b) A copy of each report at the time of its mailing to the Holders of Notes shall be mailed to the Company and filed with the Commission and each stock exchange on which the Notes are listed in accordance with TIA Section 313(d). The Company shall promptly notify the Trustee when the Notes are listed on any stock exchange or any delisting thereof.

Section 7.07. Compensation and Indemnity.

          (a) The Company shall pay to the Trustee (in its capacity as Trustee, and, to the extent it has been appointed as such, as Paying Agent and Registrar) from time to time reasonable compensation for its acceptance of this Indenture and services hereunder in accordance with a written schedule provided by the Trustee to the Company. The Trustee’s compensation shall not be limited by any law on compensation of a trustee of an express trust. The Company shall reimburse the Trustee promptly upon request for all reasonable and customary disbursements, advances and reasonable out-of-pocket expenses incurred or made by it in addition to the compensation for its services, except those resulting from its own negligent action, negligent failure to act or willful misconduct. Such expenses shall include the reasonable and customary compensation, disbursements and expenses of the Trustee’s agents and counsel.

          (b) The Company shall indemnify the Trustee in its capacity against any and all losses, liabilities or reasonable out-of-pocket expenses incurred by it arising out of or in connection with the acceptance or administration of its duties under this Indenture, including the costs and expenses of enforcing this Indenture against the Company (including this Section 7.07) and defending itself against any claim (whether asserted by either of the Company or any Holder or any other person) or liability in connection with the exercise or performance of any of its powers or duties hereunder, except to the extent any such loss, liability or expense may be attributable to its negligence or bad faith. The Trustee shall notify the Company promptly of any

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claim for which it may seek indemnity. Failure by the Trustee to so notify the Company shall not relieve the Company of its obligations hereunder. The Company shall defend the claim and the Trustee shall cooperate in the defense. The Trustee may elect to have separate counsel defend the claim, but the Company will be obligated to pay the reasonable fees and expenses of such separate counsel only if the Company fails to assume the Trustee’s defense or there is a conflict of interest between the Company, on the one hand, and the Trustee, on the other hand, with respect to the claim, as reasonably determined by the Trustee. The Company need not pay for any settlement made without its consent, which consent shall not be unreasonably withheld.

          (c) The obligations of the Company under this Section 7.07 shall survive the satisfaction and discharge of this Indenture.

          (d) To secure the Company’s payment obligations in this section, the Trustee shall have a Lien prior to the Notes on all money or property held or collected by the Trustee, except that held in trust to pay principal and interest on particular Notes. Such Lien shall survive the satisfaction and discharge of this Indenture.

          (e) When the Trustee incurs expenses or renders services after an Event of Default specified in Section 6.01(8) or (9) hereof occurs, the expenses and the compensation for the services (including the fees and expenses of its agents and counsel) are intended to constitute expenses of administration under any Bankruptcy Law.

Section 7.08. Replacement of Trustee.

          (a) A resignation or removal of the Trustee and appointment of a successor Trustee shall become effective only upon the successor Trustee’s acceptance of appointment as provided in this Section 7.08.

          (b) The Trustee may resign in writing at any time and be discharged from the trust hereby created by so notifying the Company. The Holders of a majority in principal amount of the then outstanding Notes may remove the Trustee by so notifying the Trustee and the Company in writing. The Company may remove the Trustee if:

     (i) the Trustee fails to comply with Section 7.10 hereof;

     (ii) the Trustee is adjudged a bankrupt or an insolvent or an order for relief is entered with respect to the Trustee under any Bankruptcy Law;

     (iii) a custodian or public officer takes charge of the Trustee or its property; or

     (iv) the Trustee becomes incapable of acting.

          (c) If the Trustee resigns or is removed or if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint a successor Trustee. Within one year after the successor Trustee takes office, the Holders of a majority in principal amount of the then outstanding Notes may appoint a successor Trustee to replace the successor Trustee appointed by the Company.

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          (d) If a successor Trustee does not take office within 30 days after the retiring Trustee resigns or is removed, the retiring Trustee, the Company, or the Holders of Notes of at least 10% in principal amount of the then outstanding Notes may petition at the expense of the Company any court of competent jurisdiction for the appointment of a successor Trustee.

          (e) If the Trustee, after written request by any Holder who has been a Holder for at least three months, fails to comply with Section 7.10, such Holder may petition any court of competent jurisdiction for the removal of the Trustee and the appointment of a successor Trustee.

          (f) A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Thereupon, the resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to Holders. The retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee, provided all sums owing to the Trustee hereunder have been paid and subject to the Lien provided for in Section 7.07 hereof. Notwithstanding replacement of the Trustee pursuant to this Section 7.08, the Company’s obligations under Section 7.07 hereof shall continue for the benefit of the retiring Trustee.

Section 7.09. Successor Trustee by Merger, Etc.

          If the Trustee consolidates, merges or converts into, or transfers all or substantially all of its corporate trust business to, another Person, the successor Person without any further act shall be the successor Trustee.

Section 7.10. Eligibility; Disqualification.

          There shall at all times be a Trustee hereunder that is a corporation organized and doing business under the laws of the United States of America or of any state thereof that is authorized under such laws to exercise corporate trustee power, that is subject to supervision or examination by federal or state authorities and that has (or its corporate parent shall have) a combined capital and surplus of at least $100.0 million as set forth in its most recent published annual report of condition.

          This Indenture shall always have a Trustee who satisfies the requirements of TIA Section 310(a)(1), (2) and (5). The Trustee is subject to TIA Section 310(b).

Section 7.11. Preferential Collection of Claims Against Company.

          The Trustee is subject to TIA Section 311(a), excluding any creditor relationship listed in TIA Section 311(b). A Trustee who has resigned or been removed shall be subject to TIA Section 311(a) to the extent indicated therein.

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ARTICLE EIGHT
Defeasance and Covenant Defeasance

Section 8.01. Option to Effect Legal Defeasance or Covenant Defeasance.

          The Company may, at its option and at any time, elect to have either Section 8.02 or 8.03 hereof be applied to all outstanding Notes upon compliance with the conditions set forth below in this Article Eight.

Section 8.02. Legal Defeasance and Discharge.

          Upon the Company’s exercise of the option applicable to this Section 8.02, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be deemed to have been discharged from its obligations with respect to all outstanding Notes and all obligations of the Guarantors shall be deemed to have been discharged with respect to their obligations under the Guarantees on the date the conditions set forth below are satisfied (hereinafter, “Legal Defeasance”). For this purpose, Legal Defeasance means that the Company and the Guarantors shall be deemed to have paid and discharged the entire Indebtedness represented by the outstanding Notes and Guarantees, respectively, which shall thereafter be deemed to be “outstanding” only for the purposes of Section 8.05 hereof and the other Sections of this Indenture referred to in clauses (a) and (b) below, and to have satisfied all of their other obligations under such Notes and this Indenture (and the Trustee, on demand of and at the expense of the Company, shall execute proper instruments acknowledging the same), except for the following provisions which shall survive until otherwise terminated or discharged hereunder: (a) the rights of Holders of outstanding Notes to receive solely from Funds in Trust (as defined in Section 8.04 hereof and as more fully set forth in such Section) payments in respect of the principal of, premium, if any, and interest on such Notes when such payments are due, (b) subject to the preceding clause (a), the Company’s obligations with respect to such Notes under Article Two and Section 4.02 hereof, (c) the rights, powers, trusts, duties and immunities of the Trustee hereunder and (d) this Article Eight. Subject to compliance with this Article Eight, the Company may exercise its option under this Section 8.02 notwithstanding the prior exercise of its option under Section 8.03 hereof.

Section 8.03. Covenant Defeasance.

          Upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03, the Company shall, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, be released from its obligations, and each Restricted Subsidiary shall be released from its obligations, under the covenants contained in Sections 4.03, 4.07, 4.08, 4.09, 4.10, 4.11, 4.12, 4.13, 4.14, 4.15, 4.16, 4.17, 4.18, 4.20 and 5.01 hereof with respect to the outstanding Notes on and after the date the conditions set forth in Section 8.04 are satisfied (hereinafter, “Covenant Defeasance”), and the Notes shall thereafter be deemed not “outstanding” for the purposes of any direction, waiver, consent or declaration or act of Holders (and the consequences of any thereof) in connection with such covenants, but shall continue to be deemed “outstanding” for all other purposes hereunder (it being understood that such Notes shall not be deemed outstanding for accounting purposes). For this purpose, Covenant Defeasance means that, with respect to the outstanding Notes, the Company and each Restricted

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Subsidiary may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of any reference in any such covenant to any other provision herein or in any other document and such omission to comply shall not constitute a Default or an Event of Default under Section 6.01 hereof, but, except as specified above, the remainder of this Indenture and such Notes shall be unaffected thereby. In addition, upon the Company’s exercise under Section 8.01 hereof of the option applicable to this Section 8.03, subject to the satisfaction of the conditions set forth in Section 8.04 hereof, Sections 6.01(3) through (7) shall not constitute Events of Default.

Section 8.04. Conditions to Legal Defeasance or Covenant Defeasance.

          The following shall be the conditions to the application of either Section 8.02 or 8.03 hereof to the outstanding Notes:

          (a) the Company must irrevocably deposit or cause to be deposited with the Trustee, in trust, specifically pledged as security for, and dedicated solely to, the benefit of the Holders of the Notes cash in United States dollars, U.S. Government Obligations, or a combination thereof (“Funds in Trust”), in such amounts as, in the aggregate, will be sufficient, in the opinion of a nationally recognized firm of independent public accountants or a nationally recognized investment banking firm, to pay and discharge the principal of, premium, if any, and interest on the outstanding Notes on the Stated Maturity (or on any date after May 1, 2010 (such date being referred to as the “Defeasance Redemption Date”), if at or prior to electing either Legal Defeasance or Covenant Defeasance, the Company has delivered to the Trustee an irrevocable notice to redeem all of the outstanding Notes on the Defeasance Redemption Date);

          (b) in the case of Legal Defeasance, the Company shall have delivered to the Trustee an opinion of independent counsel in the United States stating that (A) the Company has received from, or there has been published by, the Internal Revenue Service a ruling or (B) since the date of this Indenture, there has been a change in the applicable federal income tax law, in either case to the effect that, and based thereon such opinion of independent counsel in the United States shall confirm that, the Holders and Beneficial Owners of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Legal Defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred;

          (c) in the case of Covenant Defeasance, the Company shall have delivered to the Trustee an opinion of independent counsel in the United States to the effect that the Holders and Beneficial Owners of the outstanding Notes will not recognize income, gain or loss for federal income tax purposes as a result of such Covenant Defeasance and will be subject to federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred;

          (d) no Default or Event of Default shall have occurred and be continuing on the date of such deposit or insofar as clause (8) or (9) of Section 6.01 is concerned, at any time during the period ending on the 91st day after the date of deposit;

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          (e) such Legal Defeasance or Covenant Defeasance shall not result in a breach or violation of, or constitute a Default under, this Indenture or any other material agreement or instrument to which the Company, any Guarantor or any Restricted Subsidiary is a party or by which it is bound;

          (f) such Legal Defeasance or Covenant Defeasance shall not result in the trust arising from such deposit constituting an investment company within the meaning of the Investment Company Act of 1940, as amended, unless such trust shall be registered under such Act or exempt from registration thereunder;

          (g) the Company shall have delivered to the Trustee an opinion of independent counsel in the United States to the effect that (assuming no Holder of the Notes would be considered an insider of the Company or any Guarantor under any applicable bankruptcy or insolvency law and assuming no intervening bankruptcy or insolvency of the Company or any Guarantor between the date of deposit and the 91st day following the deposit) after the 91st day following the deposit, the trust funds will not be subject to the effect of any applicable bankruptcy, insolvency, reorganization or similar laws affecting creditors’ rights generally;

          (h) the Company shall have delivered to the Trustee an Officers’ Certificate stating that the deposit was not made by the Company with the intent of preferring the Holders of the Notes or any Guarantee over the other creditors of the Company or any Guarantor with the intent of defeating, hindering, delaying or defrauding creditors of the Company, any Guarantor or others;

          (i) no event or condition shall exist that would prevent the Company from making payments of the principal of, premium, if any, and interest on the Notes on the date of such deposit or at any time ending on the 91st day after the date of such deposit; and

          (j) the Company will have delivered to the Trustee an Officers’ Certificate and an opinion of independent counsel, each stating that all conditions precedent provided for relating to either the Legal Defeasance or the Covenant Defeasance, as the case may be, have been complied with.

Section 8.05. Deposited Money and U.S. Government Obligations to Be Held in Trust; Other Miscellaneous Provisions.

          (a) Subject to Section 8.06 hereof, all money and non-callable U.S. Government Obligations (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 8.05, the “Trustee”) pursuant to Section 8.04 hereof in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of principal, premium and interest, but such money need not be segregated from other funds except to the extent required by law.

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          (b) The Company shall pay and indemnify the Trustee against any tax, fee or other charge imposed on or assessed against the cash or non-callable U.S. Government Obligations deposited pursuant to Section 8.04 hereof or the principal and interest received in respect thereof other than any such tax, fee or other charge which by law is for the account of the Holders of the outstanding Notes.

          (c) Anything in this Article Eight to the contrary notwithstanding, the Trustee shall deliver or pay to the Company from time to time upon the request of the Company any money or non-callable U.S. Government Obligations held by it as provided in Section 8.04 hereof which, in the opinion of a nationally recognized firm of independent public accountants, investment bank, or appraisal firm expressed in a written certification thereof delivered to the Trustee (which may be the opinion delivered under Section 8.04(a) hereof), are in excess of the amount thereof that would then be required to be deposited to effect an equivalent Legal Defeasance or Covenant Defeasance.

Section 8.06. Repayment to the Company.

          Any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of the principal of, premium, if any, or interest on any Note and remaining unclaimed for two years after such principal, and premium, if any, or interest has become due and payable shall be paid to the Company upon its request or (if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, shall at the expense of the Company cause to be published once, in The New York Times and The Wall Street Journal (national edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such money then remaining shall be repaid to the Company.

Section 8.07. Reinstatement.

          If the Trustee or Paying Agent is unable to apply any United States dollars or non-callable U.S. Government Obligations in accordance with Section 8.02 or 8.03 hereof, as the case may be, by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, then the Company’s obligations to make the related payments under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred pursuant to Section 8.02 or 8.03 hereof until such time as the Trustee or Paying Agent is permitted to apply all such money in accordance with Section 8.02 or 8.03 hereof, as the case may be; provided, however, that, if the Company make any payment of principal of, premium, if any, or interest on any Note following the reinstatement of its obligations, the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money held by the Trustee or Paying Agent.

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ARTICLE NINE
Amendment, Supplement and Waiver

Section 9.01. Without Consent of Holders of Notes.

          (a) Notwithstanding Section 9.02 hereof, the Company, any Guarantor, any other obligor under the Notes and the Trustee may modify, supplement or amend this Indenture or the Notes without the consent of any Holder of a Note:

     (1) to evidence the succession of another Person to the Company, a Guarantor, or any other obligor under the Notes, and the assumption by any such successor of the covenants of the Company, such Guarantor or such obligor in this Indenture and in the Notes and in any Guarantee in accordance with Section 5.01 hereof;

     (2) to add to the covenants of the Company, any Guarantor or any other obligor under the Notes for the benefit of the Holders of the Notes or to surrender any right or power conferred upon the Company or any Guarantor or any other obligor under the Notes, as applicable, in this Indenture, in the Notes or in any Guarantee;

     (3) to cure any ambiguity, or to correct or supplement any provision in this Indenture, the Notes or any Guarantee which may be defective or inconsistent with any other provision in this Indenture, the Notes or any Guarantee;

     (4) to make any provision with respect to matters or questions arising under this Indenture, the Notes or any Guarantee, provided that such provisions shall not adversely affect the interest of the Holders of the Notes in any material respect;

     (5) to add a Guarantor or additional obligor under this Indenture or permit any Person to guarantee the Notes and/or obligations under this Indenture;

     (6) to release a Guarantor as provided in this Indenture;

     (7) to evidence and provide the acceptance of the appointment of a successor Trustee under this Indenture;

     (8) to mortgage, pledge, hypothecate or grant a security interest in favor of the Trustee for the benefit of the Holders of the Notes as additional security for the payment and performance of the Company’s and any Guarantor’s obligations under this Indenture, in any property, or assets, including any of which are required to be mortgaged, pledged or hypothecated, or in which a security interest is required to be granted to or for the benefit of the Trustee pursuant to this Indenture or otherwise;

     (9) to provide for the issuance of Additional Notes under this Indenture in accordance with the limitations set forth in this Indenture;

     (10) to conform the text of this Indenture or the Notes to any provision of the “Description of Notes” section of the Offering Memorandum to the extent that such text

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was intended to be a verbatim recitation of the text of the “Description of Notes” section of the Offering Memorandum; or

     (11) to comply with the rules of any applicable securities depositary.

          (b) Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or supplemental Indenture, and upon receipt by the Trustee of the documents described in Section 12.04 and Section 9.06 hereof, the Trustee shall join with the Company in the execution of any amended or supplemental Indenture authorized or permitted by the terms of this Indenture and to make any further appropriate agreements and stipulations that may be therein contained, but the Trustee shall not be obligated to enter into such amended or supplemental Indenture that affects its own rights, duties or immunities under this Indenture or otherwise.

Section 9.02. With Consent of Holders of Notes.

          (a) Except as provided below in this Section 9.02, the Company, any Guarantor, any other obligor under the Notes and the Trustee may amend or supplement this Indenture or the Notes with the consent of the Holders of at least a majority in aggregate principal amount of the Notes (including Additional Notes, if any) then outstanding (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes), and, subject to Sections 6.04 and 6.07 hereof, any existing Default or Event of Default or compliance with any provision of this Indenture or the Notes may be waived with the consent of the Holders of a majority in principal amount of the then outstanding Notes (including Additional Notes, if any) (including, without limitation, consents obtained in connection with a purchase of, or tender offer or exchange offer for, Notes). However, without the consent of each Holder affected, an amendment or waiver under this Section 9.02 may not (with respect to any Notes held by a non-consenting Holder):

     (1) change the Stated Maturity of the principal of, or any installment of interest on, or change to an earlier date any redemption date of, or waive a default in the payment of the principal of, premium, if any, or interest on, any such Note or reduce the principal amount thereof or the rate of interest thereon or any premium payable upon the redemption thereof, or change the coin or currency in which the principal of any such Note or any premium or the interest thereon is payable, or impair the right to institute suit for the enforcement of any such payment after the Stated Maturity thereof (or, in the case of redemption, on or after the redemption date);

     (2) directly or indirectly reduce the amounts required to be paid by the Company (or materially defer the times at which the Company is required to pay such amounts) pursuant to a Prepayment Offer in connection with any Asset Sale or Asset Sales in accordance with Section 4.11 hereof or pursuant to a Change of Control Offer in the event of any Change of Control in accordance with Section 4.20 hereof;

     (3) reduce the percentage in principal amount of such outstanding Notes, the consent of whose Holders is required for any such amendment or supplemental indenture,

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or the consent of whose Holders is required for any waiver or compliance with certain provisions of this Indenture;

     (4) modify any of the provisions relating to supplemental indentures requiring the consent of Holders or relating to the waiver of past defaults or relating to the waiver of certain covenants, except to increase the percentage of such outstanding Notes required for such actions or to provide that certain other provisions of this Indenture cannot be modified or waived without the consent of the Holder of each such Note affected thereby;

     (5) except as otherwise permitted under Section 5.01 hereof, consent to the assignment or transfer by the Company or any Guarantor of any of its rights and obligations under this Indenture;

     (6) voluntarily release, other than in accordance with this Indenture, the Guarantee of any Guarantor; or

     (7) amend or modify any of the provisions of this Indenture in any manner which subordinates the Notes issued hereunder in right of payment to any other Indebtedness of the Company or which subordinates any Guarantee in right of payment to any other Indebtedness of the Guarantor issuing any such Guarantee.

          (b) The Company may, but shall not be obligated to, fix a record date for the purpose of determining the Persons entitled to consent to any indenture supplemental hereto. If a record date is fixed, the Holders on such record date, or its duly designated proxies, and only such Persons, shall be entitled to consent to such supplemental indenture, whether or not such Holders remain Holders after such record date; provided that unless such consent shall have become effective by virtue of the requisite percentage having been obtained prior to the date which is 90 days after such record date, any such consent previously given shall automatically and without further action by any Holder be canceled and of no further effect.

          (c) Upon the request of the Company accompanied by a resolution of its Board of Directors authorizing the execution of any such amended or supplemental indenture, and upon the filing with the Trustee of evidence reasonably satisfactory to the Trustee of the consent of the Holders of Notes as aforesaid, and upon receipt by the Trustee of the documents described in Section 9.06 and Section 12.04 hereof, the Trustee shall join with the Company in the execution of such amended or supplemental indenture unless such amended or supplemental indenture directly affects the Trustee’s own rights, duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated to, enter into such amended or supplemental indenture.

          (d) It shall not be necessary for the consent of the Holders of Notes under this Section 9.02 to approve the particular form of any proposed amendment or waiver, but it shall be sufficient if such consent approves the substance thereof.

          (e) After an amendment, supplement or waiver under this Section 9.02 becomes effective, the Company shall mail to the Holders of Notes affected thereby a notice briefly describing the amendment, supplement or waiver. Any failure of the Company to mail

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such notice, or any defect therein, shall not, however, in any way impair or affect the validity of any such amended or supplemental indenture or waiver.

Section 9.03. Compliance with Trust Indenture Act.

          Every amendment or supplement to this Indenture or the Notes shall be set forth in an amended or supplemental Indenture that complies with the TIA as then in effect.

Section 9.04. Revocation and Effect of Consents.

          Until an amendment, supplement or waiver becomes effective, a consent to it by a Holder of a Note is a continuing consent by the Holder of a Note and every subsequent Holder of a Note or portion of a Note that evidences the same debt as the consenting Holder’s Note, even if notation of the consent is not made on any Note. However, any such Holder of a Note or subsequent Holder of a Note may revoke the consent as to its Note if the Trustee receives written notice of revocation before the date the amendment, supplement or waiver becomes effective. An amendment, supplement or waiver becomes effective in accordance with its terms and thereafter binds every Holder.

Section 9.05. Notation on or Exchange of Notes.

          (a) The Trustee may place an appropriate notation about an amendment, supplement or waiver on any Note thereafter authenticated. The Company in exchange for all Notes may issue and the Trustee shall, upon receipt of an Authentication Order, authenticate new Notes that reflect the amendment, supplement or waiver.

          (b) Failure to make the appropriate notation or issue a new Note shall not affect the validity and effect of such amendment, supplement or waiver.

Section 9.06. Trustee to Sign Amendments, Etc.

          The Trustee shall sign any amended or supplemental indenture or Note authorized pursuant to this Article Nine if the amendment or supplement does not adversely affect the rights, duties, liabilities or immunities of the Trustee. Neither the Company nor any Guarantor may sign an amendment or supplemental indenture or Note or Guarantee until its Board of Directors or trustees or sole member (or committee serving a similar function), as the case may be, approves it. In executing any amended or supplemental indenture or Note, the Trustee shall be entitled to receive and (subject to Section 7.01 hereof) shall be fully protected in relying upon an Officers’ Certificate and an Opinion of Counsel stating that the execution of such amended or supplemental indenture is authorized or permitted by this Indenture.

ARTICLE TEN
Guarantees

Section 10.01. Guarantee.

          (a) Subject to this Article Ten, each of the Guarantors hereby, jointly and severally, fully and unconditionally, guarantees, on a senior unsecured basis, to each Holder of a

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Note authenticated and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective of the validity and enforceability of this Indenture, the Notes or the obligations of the Company hereunder or thereunder, that: (i) the principal of, premium, if any, and interest on the Notes will be promptly paid in full when due, whether at maturity, by acceleration, redemption or otherwise, and interest on the overdue principal of and interest on the Notes, if any, if lawful (subject in all cases to any applicable grace period provided herein), and all other obligations of the Company to the Holders or the Trustee hereunder or thereunder will be promptly paid in full or performed, all in accordance with the terms hereof and thereof; and (ii) in case of any extension of time of payment or renewal of any Notes or any of such other obligations, that same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. Failing payment when due of any amount so guaranteed or any performance so guaranteed for whatever reason, the Guarantors shall be jointly and severally obligated to pay the same immediately. Each Guarantor agrees that this is a guarantee of payment and not a guarantee of collection.

          (b) The Guarantors hereby agree that, to the maximum extent permitted under applicable law, their obligations hereunder shall be unconditional, irrespective of the validity, regularity or enforceability of the Notes or this Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder of the Notes with respect to any provisions hereof or thereof, the recovery of any judgment against the Company, any action to enforce the same or any other circumstance which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. Subject to Section 6.06 hereof, each Guarantor hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever and covenant that this Guarantee shall not be discharged except by complete performance of the obligations contained in the Notes and this Indenture.

          (c) If any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors or any custodian, trustee, liquidator or other similar official acting in relation to either of the Company or the Guarantors, any amount paid by either to the Trustee or such Holder, this Guarantee, to the extent theretofore discharged, shall be reinstated in full force and effect.

          (d) Each Guarantor agrees that it shall not be entitled to any right of subrogation in relation to the Holders in respect of any obligations guaranteed hereby until payment in full of all obligations guaranteed hereby. Each Guarantor further agrees that, as between the Guarantors, on the one hand, and the Holders and the Trustee, on the other hand, (x) the maturity of the obligations guaranteed hereby may be accelerated as provided in Article Six hereof for the purposes of this Guarantee, notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the obligations guaranteed hereby, and (y) in the event of any declaration of acceleration of such obligations as provided in Article Six hereof, such obligations (whether or not due and payable) shall forthwith become due and payable by the Guarantors for the purpose of this Guarantee. Each Guarantor that makes a payment or distribution under its Guarantee shall have the right to seek contribution from any non-paying Guarantor, in a pro rata amount based on the net assets of each Guarantor

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determined in accordance with GAAP, so long as the exercise of such right does not impair the rights of the Holders under the Guarantee.

          (e) The Obligations of each Guarantor under its Guarantee pursuant to this Article Ten shall rank equally in right of payment with other existing and future senior Indebtedness of such Guarantor, and senior in right of payment to all existing and future Subordinated Indebtedness of such Guarantor.

Section 10.02. Limitation on Guarantor Liability.

          Each Guarantor, and by its acceptance of Notes, each Holder, hereby confirms that it is the intention of all such parties that the Guarantee of such Guarantor not constitute a fraudulent transfer or conveyance for purposes of Bankruptcy Law, the Uniform Fraudulent Conveyance Act, the Uniform Fraudulent Transfer Act or any similar federal or state law to the extent applicable to any Guarantee. To effectuate the foregoing intention, the Trustee, the Holders and the Guarantors hereby irrevocably agree that the obligations of such Guarantor will be limited to the maximum amount which, after giving effect to all other contingent and fixed liabilities of such Guarantor, and after giving effect to any collections from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other Guarantor under its Guarantee or pursuant to its contribution obligations under this Article Ten, will result in the obligations of such Guarantor under its Guarantee not constituting a fraudulent conveyance or fraudulent transfer under federal or state law. Until such time as the Notes are paid in full, each Guarantor hereby waives all rights of subrogation or contribution, whether arising by contract or operation of law (including, without limitation, any such right arising under federal Bankruptcy Law) or otherwise by reason of any payment by it pursuant to the provisions of this Article Ten.

Section 10.03. Execution and Delivery of Guarantee.

          (a) To evidence its Guarantee set forth in Section 10.01, on the Issue Date each Initial Guarantor shall be required to have a notation of such Guarantee substantially in the form included in Exhibit E hereto endorsed by an Officer of such Initial Guarantor by manual or facsimile signature on each Note authenticated and delivered by the Trustee.

          (b) Each Guarantor hereby agrees that its Guarantee set forth in Section 10.01 shall remain in full force and effect notwithstanding any failure to endorse on each Note a notation of such Guarantee.

          (c) If an Officer whose signature is on this Indenture or on the Guarantee no longer holds that office at the time the Trustee authenticates the Note on which a Guarantee is endorsed, the Guarantee shall be valid nevertheless.

          (d) The delivery of any Note by the Trustee, after the authentication thereof hereunder, shall constitute due delivery of the Guarantee set forth in this Indenture on behalf of the Guarantors.

          (e) Subsequent to the date of this Indenture, in the event a Restricted Subsidiary is required by Section 4.12 hereof to guarantee the Company’s obligations under the Notes and this Indenture, the Company shall cause such Restricted Subsidiary to execute a

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supplemental indenture to this Indenture substantially in the form included in Exhibit F hereto and Guarantees in accordance with Section 4.12 hereof and this Article Ten, to the extent applicable.

Section 10.04. Releases of Guarantors.

          (a) A Guarantor will be deemed automatically and unconditionally released and discharged from all of its obligations under its Guarantee without any further action on the part of the Trustee or any Holder of the Notes:

     (1) in connection with any sale or other disposition of all or substantially all of the assets of that Guarantor (including by way of merger or consolidation) to one or more Persons that are not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary, if the sale or other disposition of all or substantially all of the assets of that Guarantor complies with Sections 4.11 and 4.09 hereof;

     (2) in connection with any sale of all of the Capital Stock of a Guarantor to one or more Persons that are not (either before or after giving effect to such transaction) the Company or a Restricted Subsidiary, if the sale of all such Capital Stock of that Guarantor complies with Sections 4.11 and 4.09 hereof;

     (3) if the Company properly designates such Guarantor as a Non-Guarantor Restricted Subsidiary and such Restricted Subsidiary is not required to issue a Guarantee of the Notes pursuant to Section 4.12 hereof;

     (4) if the Company properly designates any Restricted Subsidiary that is a Guarantor as an Unrestricted Subsidiary;

     (5) if a Guarantor under any Credit Facility is released from its guarantee issued pursuant to the terms of any Credit Facility of the Company or any direct or indirect Restricted Subsidiary, and such Guarantor is not an obligor under any Indebtedness; or

     (6) if the Notes are discharged in accordance with the procedures set forth in Article Eight or Article Eleven hereof;

provided that any such release and discharge pursuant to clauses (1), (2), (4) and (5) above shall occur only to the extent that all obligations of such Guarantor under all of its guarantees of, and under all of its pledges of assets or other security interests which secure any, Indebtedness of the Company shall also terminate at such time.

          (b) Any Guarantor not released from its obligations under its Guarantee shall remain liable for the full amount of principal of and interest on the Notes and for the other obligations of any Guarantor under this Indenture as provided in this Article Ten.

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ARTICLE ELEVEN
Satisfaction and Discharge

Section 11.01. Satisfaction and Discharge.

          This Indenture will be discharged and will cease to be of further effect (except as to surviving rights of registration of transfer or exchange of the Notes as expressly provided for in this Indenture) as to all outstanding Notes under this Indenture when:

(a) either

     (1) all such Notes theretofore authenticated and delivered (except lost, stolen or destroyed Notes which have been replaced or paid or Notes whose payment has been deposited in trust or segregated and held in trust by the Company and thereafter repaid to the Company or discharged from such trust as provided for in this Indenture) have been delivered to the Trustee for cancellation, or

     (2) all Notes not theretofore delivered to the Trustee for cancellation (a) have become due and payable, (b) will become due and payable at their Stated Maturity within one year, or (c) are to be called for redemption within one year under arrangements satisfactory to the Trustee for the giving of notice of redemption by the Trustee in the name, and at the expense, of the Company;

          (b) the Company or any Guarantor has irrevocably deposited or caused to be deposited with the Trustee as trust funds in trust an amount in United States dollars, U.S. Government Obligations, or a combination thereof, sufficient to pay and discharge the entire Indebtedness on the Notes not theretofore delivered to the Trustee for cancellation, including principal of, premium, if any, and accrued interest at such Maturity, Stated Maturity or redemption date;

          (c) no Default or Event of Default shall have occurred and be continuing on the date of such deposit;

          (d) the Company or any Guarantor has paid or caused to be paid all other sums payable under this Indenture by the Company and any Guarantor;

          (e) the Company has delivered to the Trustee an Officers’ Certificate and an opinion of independent counsel each stating that (1) all conditions precedent under this Indenture relating to the satisfaction and discharge of this Indenture have been complied with and (2) such satisfaction and discharge will not result in a breach or violation of, or constitute a default under, this Indenture or any other material agreement or instrument to which the Company, any Guarantor or any Subsidiary is a party or by which the Company, any Guarantor or any Subsidiary is bound; and

          (f) the Company has delivered irrevocable instructions to the Trustee hereunder to apply any deposited money described in clause (b) above to the payment of the Notes at Maturity, Stated Maturity or the redemption date, as the case may be.

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Section 11.02. l Deposited Money and U.S. Government Obligations to Be Held in Trust; Other Miscellaneous Provisions.

          (a) Subject to Section 11.03 hereof, all money and non-callable U.S. Government Obligations (including the proceeds thereof) deposited with the Trustee (or other qualifying trustee, collectively for purposes of this Section 11.02, the “Trustee”) pursuant to Section 11.01 hereof in respect of the outstanding Notes shall be held in trust and applied by the Trustee, in accordance with the provisions of such Notes and this Indenture, to the payment, either directly or through any Paying Agent (including the Company acting as Paying Agent) as the Trustee may determine, to the Holders of such Notes of all sums due and to become due thereon in respect of principal, premium and interest, but such money need not be segregated from other funds except to the extent required by law.

          (b) Notwithstanding the above, the Trustee shall pay to the Company from time to time upon its request any cash or U.S. Government Obligations held by it as provided in this Section 11.02 which, in the opinion of a nationally recognized firm of independent public accountants expressed in a written certification delivered to the Trustee, are in excess of the amount thereof that would then be required to be deposited to effect a satisfaction and discharge under this Article Eleven.

Section 11.03. Repayment to the Company.

          Any money deposited with the Trustee or any Paying Agent, or then held by the Company, in trust for the payment of the principal of, premium or interest on any Note and remaining unclaimed for two years after such principal, and premium, if any, or interest has become due and payable shall be paid to the Company on its request or (if then held by the Company) shall be discharged from such trust; and the Holder of such Note shall thereafter look only to the Company for payment thereof, and all liability of the Trustee or such Paying Agent with respect to such trust money, and all liability of the Company as trustee thereof, shall thereupon cease; provided, however, that the Trustee or such Paying Agent, before being required to make any such repayment, shall at the expense of the Company cause to be published once, in The New York Times or The Wall Street Journal (national edition), notice that such money remains unclaimed and that, after a date specified therein, which shall not be less than 30 days from the date of such notification or publication, any unclaimed balance of such money then remaining shall be repaid to the Company.

ARTICLE TWELVE
Miscellaneous

Section 12.01. No Adverse Interpretation of Other Agreements.

          This Indenture may not be used to interpret any other indenture, loan or debt agreement of the Company or any of its Subsidiaries or of any other Person. Any such indenture, loan or debt agreement may not be used to interpret this Indenture.

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Section 12.02. Notices.

          (a) Any notice or communication by either of the Company or any Guarantor, on the one hand, or the Trustee on the other hand, to the other is duly given if in writing and delivered in Person or mailed by first class mail (registered or certified, return receipt requested), facsimile or overnight air courier guaranteeing next day delivery, to the others’ address:

If to the Company or any Guarantor:

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

with copies to:

THOMPSON & KNIGHT L.L.P.
1700 Pacific Avenue, Suite 3300
Dallas, Texas 75201
Facsimile: (214) 969-1751
Attention: Joe Dannenmaier

If to the Trustee:

WELLS FARGO BANK, N.A.
Corporate Trust Services
Sixth & Marquette; N9303-120
Minneapolis, MN 55479
Facsimile: (612) 667-9825
Attention: Brigham Exploration Administrator

          (b) The Company, the Guarantors or the Trustee, by notice to the others may designate additional or different addresses for subsequent notices or communications.

          (c) All notices and communications (other than those sent to Holders) shall be deemed to have been duly given: (i) at the time delivered by hand, if personally delivered; (ii) five Business Days after being deposited in the mail, postage prepaid, if mailed; (iii) when receipt acknowledged, if telecopied; (iv) and the next Business Day after timely delivery to the courier, if sent by overnight air courier guaranteeing next day delivery.

          (d) Any notice or communication to a Holder shall be mailed by first class mail, certified or registered, return receipt requested, or by overnight air courier guaranteeing next day delivery to its address shown on the register kept by the Registrar. Any notice or communication shall also be so mailed to any Person described in TIA Section 313(c), to the

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extent required by the TIA. Failure to mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders.

          (e) If a notice or communication is mailed in the manner provided above within the time prescribed, it is duly given, whether or not the addressee receives it.

          (f) If the Company mails a notice or communication to Holders, it shall mail a copy to the Trustee and each Agent at the same time.

Section 12.03. Communication by Holders of Notes with Other Holders of Notes.

          Holders may communicate pursuant to TIA Section 312(b) with other Holders with respect to their rights under this Indenture or the Notes. The Company, the Trustee, the Registrar and anyone else shall have the protection of TIA Section 312(c).

Section 12.04. Certificate and Opinion as to Conditions Precedent.

          (a) Upon any request or application by the Company to the Trustee to take any action under this Indenture, the Company shall furnish to the Trustee:

     (i) an Officers’ Certificate in form and substance reasonably satisfactory to the Trustee (which shall include the statements set forth in Section 12.05 hereof) stating that, in the opinion of the signers, all conditions precedent and covenants, if any, provided for in this Indenture relating to the proposed action have been satisfied; and

     (ii) to the extent required under Section 314 of the Trust Indenture Act, an Opinion of Counsel in form and substance reasonably satisfactory to the Trustee (which shall include the statements set forth in Section 12.05 hereof) stating that, in the opinion of such counsel (who may rely on such Officers’ Certificate as to matters of fact), all such conditions precedent and covenants have been satisfied.

Section 12.05. Statements Required in Certificate or Opinion.

          (a) Each certificate or opinion with respect to compliance with a condition or covenant provided for in this Indenture (other than a certificate provided pursuant to TIA Section 314(a)(4)) shall comply with the provisions of TIA Section 314(e) and shall include:

     (i) a statement that the Person making such certificate or opinion has read such covenant or condition;

     (ii) a brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained in such certificate or opinion are based;

     (iii) a statement that, in the opinion of such Person, he or she has made such examination or investigation as is necessary to enable him to express an

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informed opinion as to whether or not such covenant or condition has been satisfied; and

     (iv) a statement as to whether or not, in the opinion of such Person, such condition or covenant has been satisfied.

Section 12.06. Rules by Trustee and Agents.

          The Trustee may make reasonable rules for action by or at a meeting of Holders. The Registrar or Paying Agent may make reasonable rules and set reasonable requirements for its functions.

Section 12.07. No Personal Liability of Directors, Officers, Employees and Stockholders.

          No director, officer, employee, member or stockholder of the Company or any Restricted Subsidiary, as such, will have any liability for any obligations of the Company or the Restricted Subsidiaries under the Notes, this Indenture or the Guarantees to which they are a party, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws.

Section 12.08. Governing Law.

          THIS INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE CONFLICTS OF LAW PRINCIPLES THEREOF.

Section 12.09. Consent to Jurisdiction.

          Any legal suit, action or proceeding arising out of or based upon this Indenture or the transactions contemplated hereby (“Related Proceedings”) may be instituted in the federal courts of the United States of America located in the City of New York or the courts of the State of New York in each case located in the City of New York (collectively, the “Specified Courts”), and each party irrevocably submits to the non-exclusive jurisdiction of such courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or other proceeding brought in any such court. The parties irrevocably and unconditionally waive any objection to the laying of venue of any suit, action or other proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any such court that a Related Proceeding has been brought in an inconvenient forum.

Section 12.10. Trust Indenture Act Controls.

          If and to the extent that any provision of this Indenture limits, qualifies or conflicts with the duties imposed by TIA Section 318(c), the imposed duties shall control.

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Section 12.11. Successors.

          All agreements of the Company in this Indenture and the Notes shall bind their successors. All agreements of the Trustee in this Indenture shall bind its successors. All agreements of each Guarantor in this Indenture shall bind its successors, except as otherwise provided in Section 5.01 or 10.04.

Section 12.12. Severability.

          In case any provision in this Indenture or the Notes shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

Section 12.13. Counterpart Originals.

          The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

Section 12.14. Acts of Holders.

          (a) Any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by the Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such Holders in person or by agents duly appointed in writing, and may be given or obtained in connection with a purchase of, or tender offer or exchange offer for, outstanding Notes; and, except as herein otherwise expressly provided, such action shall become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as the “Act” of the Holders signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and conclusive in favor of the Trustee and the Company if made in the manner provided in this Section 12.14.

          (b) The fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying that the individual signing such instrument or writing acknowledged to such witness, notary or officer the execution thereof. Where such execution is by a signer acting in a capacity other than his individual capacity, such certificate or affidavit shall also constitute sufficient proof of authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing the same, may also be proved in any other manner which the Trustee deems sufficient.

          (c) Notwithstanding anything to the contrary contained in this Section 12.14, the principal amount and serial numbers of Notes held by any Holder, and the date of holding the same, shall be proved by the register of the Notes maintained by the Registrar as provided in Section 2.04 hereof.

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          (d) If the Company shall solicit from the Holders of the Notes any request, demand, authorization, direction, notice, consent, waiver or other Act, the Company may, at their option, by or pursuant to a resolution of its Board of Directors, fix in advance a record date for the determination of Holders entitled to give such request, demand, authorization, direction, notice, consent, waiver or other Act, but the Company shall have no obligation to do so. Notwithstanding TIA Section 316(c), such record date shall be the record date specified in or pursuant to such Board Resolution, which shall be a date not earlier than the date 30 days prior to the first solicitation of Holders generally in connection therewith or the date of the most recent list of Holders forwarded to the Trustee prior to such solicitation pursuant to Section 2.06 hereof and not later than the date such solicitation is completed. If such a record date is fixed, such request, demand, authorization, direction, notice, consent, waiver or other Act may be given before or after such record date, but only the Holders of record at the close of business on such record date shall be deemed to be Holders for the purposes of determining whether Holders of the requisite proportion of the then outstanding Notes have authorized or agreed or consented to such request, demand, authorization, direction, notice, consent, waiver or other Act, and for that purpose the then outstanding Notes shall be computed as of such record date; provided that no such authorization, agreement or consent by the Holders on such record date shall be deemed effective unless it shall become effective pursuant to the provisions of this Indenture not later than eleven months after the record date.

          (e) Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Note shall bind every future Holder of the same Note and the Holder of every Note issued upon the registration or transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee or the Company in reliance thereon, whether or not notation of such action is made upon such Note.

          (f) Without limiting the foregoing, a Holder entitled hereunder to take any action hereunder with regard to any particular Note may do so itself with regard to all or any part of the principal amount of such Note or by one or more duly appointed agents each of which may do so pursuant to such appointment with regard to all or any part of such principal amount.

          (g) For purposes of this Indenture, any action by the Holders which may be taken in writing may be taken by electronic means or as otherwise reasonably acceptable to the Trustee.

Section 12.15. Benefit of Indenture.

          Nothing in this Indenture or in the Notes, express or implied, shall give to any Person, other than the parties hereto, any Paying Agent, any Registrar and its successors hereunder, and the Holders, any benefit or any legal or equitable right, remedy or claim under this Indenture.

Section 12.16. Table of Contents, Headings, Etc.

          The Table of Contents, Cross-Reference Table and Headings of the Articles and Sections of this Indenture have been inserted for convenience of reference only, are not to be

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considered a part of this Indenture and shall in no way modify or restrict any of the terms or provisions hereof.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

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SIGNATURES

BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By:	/s/ Eugene B. Shepherd, Jr.
	Name:   Eugene B. Shepherd, Jr.
	Title:     Executive Vice President and Chief
	Financial Officer
BRIGHAM, INC., a Nevada corporation
By:	/s/ Eugene B. Shepherd, Jr.
	Name:   Eugene B. Shepherd, Jr.
	Title:     Chief Financial Officer
BRIGHAM OIL & GAS, L.P., a Delaware limited partnership
By:	BRIGHAM, INC.,
	Its managing general partner
By:	/s/ Eugene B. Shepherd, Jr.
	Name:   Eugene B. Shepherd, Jr.
	Title:     Chief Financial Officer

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WELLS FARGO BANK, N.A., as Trustee
By:	/s/ Timothy P. Mowdy
	Name:   Timothy P. Mowdy
	Title:     Vice President

- 115 -

EXHIBIT A1

[Face of Note]

          UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

          THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.07(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.12 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

          THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE

A1-1

SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

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CUSIP [     ]

No. ___ $                    

BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Brigham Exploration Company, a Delaware corporation (the “Company”), which term includes any successor under the Indenture hereinafter referred to, for value received, promises to pay to CEDE & CO., or its registered assigns, the principal sum of [Amount of Note] ($[     ]) UNITED STATES DOLLARS on May 1, 2014.

Interest Payment Dates: May 1 and November 1 of each year, commencing November 1, 2006.

Regular Record Dates: April 15 and October 15 of each year.

          Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Date of Issuance:                     

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          IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile by its duly authorized officers.

BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By:
	Name:
	Title:
By:
	Name:
	Title:

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(Form of Trustee’s Certificate of Authentication)

          This is one of the 9 ⁵/₈% Senior Notes due 2014 described in the within-mentioned Indenture.

WELLS FARGO BANK, N.A., as Trustee
By:
	Authorized Signatory

Date:                                         

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[Reverse Side of Note]

BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

          1. Interest. The Company promises to pay interest on the principal amount of this Note at 9.625% per annum from the date hereof until maturity [and shall pay Additional Interest, if any, as provided in the Registration Rights Agreement, dated April 20, 2006 † referred below]. * The Company shall pay interest [and Additional Interest, if any,]^* semi-annually in arrears on May 1 and November 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes shall accrue from the most recent date to which interest has been paid on the Notes (or one or more Predecessor Notes) or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be [November 1, 2006] ‡ . The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is 1% per annum in excess of the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest [and Additional Interest]^* (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful. Interest shall be computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a Business Day, payment may be made on the next succeeding day that is a Business Day, and no interest shall accrue on such payment for the intervening period.

          [This Exchange Note was issued in connection with the Exchange Offer pursuant to which the 9 ⁵/₈% Senior Notes due 2014 in like principal amount were exchanged for Exchange Notes. The Exchange Notes rank pari passu in right of payment with the Initial Notes. For any period in which the Initial Note exchanged for this Exchange Note was outstanding, Additional Interest may be due and owing on the Initial Note in connection with the Registration Rights Agreement.] **

          2. Method of Payment. The Company shall pay interest on the Notes (except defaulted interest [and Additional Interest]^*, if any) to the Persons in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the April 15th or

†	For Additional Notes, insert the date of the Registration Rights Agreement for those Additional Notes.
*	Not to be included for Exchange Notes.
‡	For Additional Notes, insert the appropriate interest payment date for those Additional Notes.
**	For Exchange Notes

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October 15th immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.13 of the Indenture with respect to defaulted interest. [The Company shall pay all Additional Interest, if any, on the dates of its choosing and in the amounts set forth in the Registration Rights Agreement.] * The Notes shall be payable as to principal, premium, if any, and interest [and Additional Interest, if any,] * at the office or agency of the Company maintained for such purpose, or, at the option of the Company, payment of interest [and Additional Interest, if any,] * may be made by check mailed to the Holders at their addresses set forth in the register of Holders, and provided that payment by wire transfer of immediately available funds shall be required with respect to principal of and interest, premium, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

          3. Paying Agent and Registrar. Initially, Wells Fargo Bank, N.A., the Trustee under the Indenture, shall act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity.

          4. Indenture. The Company issued the Notes under an Indenture dated as of April 20, 2006 (the “Indenture”) among the Company, the Initial Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Indenture pursuant to which this Note is issued provides that an unlimited amount of Additional Notes may be issued thereunder, subject to compliance with the covenants therein.

          5. Optional Redemption. (a) On or after May 1, 2010, the Company may redeem all or a portion of the Notes, on not less than 30 nor more than 60 days’ prior notice, in amounts of $1,000 or whole multiples of $1,000 in excess thereof at the following redemption prices (expressed as percentages of the principal amount), set forth below plus accrued and unpaid interest, if any, thereon, to the applicable redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date), if redeemed during the twelve-month period beginning on May 1 of the years indicated below:

Year	Redemption Price
2010	104.813%
2011	102.406%
2012 and thereafter	100.000%

* Not to be included for Exchange Notes.

A1-7

          (b) In addition, at any time and from time to time prior to May 1, 2009, the Company may use the net proceeds of one or more Equity Offerings to redeem up to an aggregate of 35% of the aggregate principal amount of Notes issued under the Indenture (including the principal amount of any Additional Notes issued under the Indenture) at a redemption price equal to 109.625% of the aggregate principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to the redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date); provided that this redemption provision shall not be applicable with respect to any transaction that results in a Change of Control. At least 65% of the aggregate principal amount of Notes (including the principal amount of any Additional Notes issued under the Indenture) must remain outstanding immediately after the occurrence of such redemption. In order to effect this redemption, the Company must mail a notice of redemption no later than 30 days after the closing of the related Equity Offering and must complete such redemption within 60 days of the closing of the Equity Offering.

          6. Mandatory Redemption. The Company shall not be required to make mandatory redemption or sinking fund payments with respect to the Notes.

          7. Repurchase at Option of Holders.

          (a) Upon the occurrence of a Change of Control, each Holder may require the Company to purchase such Holder’s Notes in whole or in part in amounts of $1,000 or whole multiples of $1,000 in excess thereof, at a purchase price in cash in an amount equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to the date of purchase, pursuant to a Change of Control Offer in accordance with the procedures set forth in the Indenture.

          (a) Under certain circumstances described in the Indenture, the Company will be required to apply the proceeds of Asset Sales to the repayment of the Notes and/or Pari Passu Indebtedness.

          8. Selection and Notice of Redemption. If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be redeemed or purchased among the Holders of the Notes not more than 60 days prior to the redemption date in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance with any other method the Trustee considers fair and reasonable. Redemptions pursuant to Section 3.07(b) of the Indenture shall be made on a pro rata basis or on as nearly a pro rata basis as practicable (subject to the provisions of the Depositary). In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the redemption date by the Trustee from the outstanding Notes not previously called for redemption. Notices of redemption may not be conditional. If any Note is to be redeemed in part only, the notice of redemption that relates to that Note will state the portion of the principal amount thereof to be redeemed. A new Note in principal amount equal to the unredeemed portion of the original Note will be issued in the name of the Holder thereof upon cancellation of the original Note. Notes called for redemption become due on the date fixed for redemption. On and after the redemption

A1-8

date, interest [and Addditional Interest] * , if any, shall cease to accrue on Notes or portions of them called for redemption.

          9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $1,000 and whole multiples of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company is not required to transfer or exchange any Note selected for redemption. Also, the Company is not required to transfer or exchange any Note for a period of 15 days before a selection of Notes to be redeemed.

          10. Persons Deemed Owners. The registered Holder of a Note will be treated as its owner for all purposes.

          11. Amendment, Supplement and Waiver. The Indenture or the Notes may be amended or supplemented only as provided in the Indenture.

          12. Defaults. In the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization specified in the Inndenture, with respect to the Company or any Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may, and the Trustee at the request of such Holders shall, declare all unpaid principal of, premium, if any, and accrued interest on all Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee if given by the Holders of the Notes) and upon any such declaration, such principal, premium, if any, and interest shall become due and payable immediately. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest) if it determines that withholding notice is in their interest. The Holders of not less than a majority in aggregate principal amount of the Notes outstanding by notice to the Trustee may on behalf of the Holders of all outstanding Notes waive any past Default and its consequences under the Indenture except a Default (1) in the payment of the principal of, premium, if any, or interest on any Note (which may only be waived with the consent of each Holder of Notes affected) or (2) in respect of a covenant or provision which under the Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment.

          13. Trustee Dealings with the Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee.

* Not to be included for Exchange Notes.

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          14. No Recourse Against Others. No director, officer, employee, member or stockholder of the Company or any Restricted Subsidiary, as such, will have any liability for any obligations of the Company or the Restricted Subsidiaries under the Notes, the Indenture or the Guarantees to which they are a party, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws.

          15. Authentication. This Note shall not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

          16. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. [In addition to the rights provided to Holders under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes issued on the Issue Date shall have all the rights set forth in the Registration Rights Agreement dated as of April 20, 2006 † , among the Company, the Guarantors and the parties named on the signature pages thereof.] *

          17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

          18. Governing Law. This Note shall be governed by, and construed in accordance with, the laws of the State of New York, without giving effect to the conflicts of laws principles thereof.

          The Company shall furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to:

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

†	For Additional Notes, insert the date of the Registration Rights Agreement for those Additional Notes.
*	Not to be included for Exchange Notes.

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ASSIGNMENT FORM

          To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
	(Insert assignee’s legal name)

	(Insert
assignee’s soc. sec. or tax I.D. no.)
	(Print
or type assignee’s name, address and zip code)

and irrevocably appoint

to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date:                    

Your Signature:
	(Sign exactly as your name appears on the face of this Note)

Signature Guarantee*:

*   Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

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OPTION OF HOLDER TO ELECT PURCHASE

          If you want to elect to have this Note purchased by the Company pursuant to Section 4.11 or 4.20 of the Indenture, check the appropriate box below:

[ ] Section 4.11   [ ] Section 4.20

          If you want to elect to have only part of the Note purchased by the Company pursuant to Section 4.11 or Section 4.20 of the Indenture, state the amount you elect to have purchased:

$ ________________

Date:_____________

Your Signature:
	(Sign exactly as your name appears on the face of this Note)
Tax Identification No.:

Signature Guarantee*:______

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

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SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE

          The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:

			Principal Amount
	Amount of Decrease	Amount of Increase	Maturity of this
	in Principal Amount	in Principal Amount	Global Following
	at Maturity of this	at Maturity of this	such Decrease (or
Date of Exchange	Global Note	Global Note	Increase)

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EXHIBIT A2

[Face of Note]

          UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

          THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.07(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.12 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

          THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE

A2-1

SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

          THE RIGHTS ATTACHING TO THIS REGULATION S TEMPORARY GLOBAL NOTE, AND THE CONDITIONS AND PROCEDURES GOVERNING ITS EXCHANGE FOR DEFINITIVE NOTES, ARE AS SPECIFIED IN THE INDENTURE (AS DEFINED HEREIN).

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CUSIP [      ]

No. ___ $                    

BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Brigham Exploration Company, a Delaware corporation (the “Company”), which term includes any successor under the Indenture hereinafter referred to, for value received, promises to pay to CEDE & CO., or its registered assigns, the principal sum of [Amount of Note] ($[ ]) UNITED STATES DOLLARS on May 1, 2014.

Interest Payment Dates: May 1 and November 1 of each year, commencing November 1, 2006.

Regular Record Dates: April 15 and October 15 of each year.

          Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Date of Issuance:                     

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          IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile by its duly authorized officers.

BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By:
	Name:
	Title:
By:
	Name:
	Title:

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(Form of Trustee’s Certificate of Authentication)

     This is one of the 9 ⁵/₈% Senior Notes due 2014 described in the within-mentioned Indenture.

WELLS FARGO BANK, N.A., as Trustee
By:
	Authorized Signatory

Date:                     

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[Reverse Side of Note]
BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

          1. Interest. The Company promises to pay interest on the principal amount of this Note at 9.625% per annum from the date hereof until maturity [and shall pay Additional Interest, if any, as provided in the Registration Rights Agreement, dated April 20, 2006 † referred below]. * The Company shall pay interest [and Additional Interest, if any,]^* semi-annually in arrears on May 1 and November 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes shall accrue from the most recent date to which interest has been paid on the Notes (or one or more Predecessor Notes) or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be [November 1, 2006] ‡ . The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is 1% per annum in excess of the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest [and Additional Interest]^* (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful. Interest shall be computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a Business Day, payment may be made on the next succeeding day that is a Business Day, and no interest shall accrue on such payment for the intervening period.

          [This Exchange Note was issued in connection with the Exchange Offer pursuant to which the 9 ⁵/₈% Senior Notes due 2014 in like principal amount were exchanged for Exchange Notes. The Exchange Notes rank pari passu in right of payment with the Initial Notes. For any period in which the Initial Note exchanged for this Exchange Note was outstanding, Additional Interest may be due and owing on the Initial Note in connection with the Registration Rights Agreement.] **

          2. Method of Payment. The Company shall pay interest on the Notes (except defaulted interest [and Additional Interest]^*, if any) to the Persons in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the April 15th or

†	For Additional Notes, insert the date of the Registration Rights Agreement for those Additional Notes.
*	Not to be included for Exchange Notes.
‡	For Additional Notes, insert the appropriate interest payment date for those Additional Notes.
**	For Exchange Notes

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October 15th immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.13 of the Indenture with respect to defaulted interest. [The Company shall pay all Additional Interest, if any, on the dates of its choosing and in the amounts set forth in the Registration Rights Agreement.] * The Notes shall be payable as to principal, premium, if any, and interest [and Additional Interest, if any,] * at the office or agency of the Company maintained for such purpose, or, at the option of the Company, payment of interest [and Additional Interest, if any,] * may be made by check mailed to the Holders at their addresses set forth in the register of Holders, and provided that payment by wire transfer of immediately available funds shall be required with respect to principal of and interest, premium, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

          3. Paying Agent and Registrar. Initially, Wells Fargo Bank, N.A., the Trustee under the Indenture, shall act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity.

          4. Indenture. The Company issued the Notes under an Indenture dated as of April 20, 2006 (the “Indenture”) among the Company, the Initial Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Indenture pursuant to which this Note is issued provides that an unlimited amount of Additional Notes may be issued thereunder, subject to compliance with the covenants therein.

          5. Optional Redemption. (a) On or after May 1, 2010, the Company may redeem all or a portion of the Notes, on not less than 30 nor more than 60 days’ prior notice, in amounts of $1,000 or whole multiples of $1,000 in excess thereof at the following redemption prices (expressed as percentages of the principal amount), set forth below plus accrued and unpaid interest, if any, thereon, to the applicable redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date), if redeemed during the twelve-month period beginning on May 1 of the years indicated below:

Year	Redemption Price
2010	104.813%
2011	102.406%
2012 and thereafter	100.000%

* Not to be included for Exchange Notes.

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          (b) In addition, at any time and from time to time prior to May 1, 2009, the Company may use the net proceeds of one or more Equity Offerings to redeem up to an aggregate of 35% of the aggregate principal amount of Notes issued under the Indenture (including the principal amount of any Additional Notes issued under the Indenture) at a redemption price equal to 109.625% of the aggregate principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to the redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date); provided that this redemption provision shall not be applicable with respect to any transaction that results in a Change of Control. At least 65% of the aggregate principal amount of Notes (including the principal amount of any Additional Notes issued under the Indenture) must remain outstanding immediately after the occurrence of such redemption. In order to effect this redemption, the Company must mail a notice of redemption no later than 30 days after the closing of the related Equity Offering and must complete such redemption within 60 days of the closing of the Equity Offering.

          6. Mandatory Redemption. The Company shall not be required to make mandatory redemption or sinking fund payments with respect to the Notes.

          7. Repurchase at Option of Holders.

          (b) Upon the occurrence of a Change of Control, each Holder may require the Company to purchase such Holder’s Notes in whole or in part in amounts of $1,000 or whole multiples of $1,000 in excess thereof, at a purchase price in cash in an amount equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to the date of purchase, pursuant to a Change of Control Offer in accordance with the procedures set forth in the Indenture.

          (b) Under certain circumstances described in the Indenture, the Company will be required to apply the proceeds of Asset Sales to the repayment of the Notes and/or Pari Passu Indebtedness.

          8. Selection and Notice of Redemption. If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be redeemed or purchased among the Holders of the Notes not more than 60 days prior to the redemption date in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance with any other method the Trustee considers fair and reasonable. Redemptions pursuant to Section 3.07(b) of the Indenture shall be made on a pro rata basis or on as nearly a pro rata basis as practicable (subject to the provisions of the Depositary). In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the redemption date by the Trustee from the outstanding Notes not previously called for redemption. Notices of redemption may not be conditional. If any Note is to be redeemed in part only, the notice of redemption that relates to that Note will state the portion of the principal amount thereof to be redeemed. A new Note in principal amount equal to the unredeemed portion of the original Note will be issued in the name of the Holder thereof upon cancellation of the original Note. Notes called for redemption become due on the date fixed for redemption. On and after the redemption

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date, interest [and Addditional Interest] * , if any, shall cease to accrue on Notes or portions of them called for redemption.

          9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $1,000 and whole multiples of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company is not required to transfer or exchange any Note selected for redemption. Also, the Company is not required to transfer or exchange any Note for a period of 15 days before a selection of Notes to be redeemed.

          10. Persons Deemed Owners. The registered Holder of a Note will be treated as its owner for all purposes.

          11. Amendment, Supplement and Waiver. The Indenture or the Notes may be amended or supplemented only as provided in the Indenture.

          12. Defaults. In the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization specified in the Inndenture, with respect to the Company or any Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may, and the Trustee at the request of such Holders shall, declare all unpaid principal of, premium, if any, and accrued interest on all Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee if given by the Holders of the Notes) and upon any such declaration, such principal, premium, if any, and interest shall become due and payable immediately. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest) if it determines that withholding notice is in their interest. The Holders of not less than a majority in aggregate principal amount of the Notes outstanding by notice to the Trustee may on behalf of the Holders of all outstanding Notes waive any past Default and its consequences under the Indenture except a Default (1) in the payment of the principal of, premium, if any, or interest on any Note (which may only be waived with the consent of each Holder of Notes affected) or (2) in respect of a covenant or provision which under the Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment.

          13. Trustee Dealings with the Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee.

* Not to be included for Exchange Notes.

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          14. No Recourse Against Others. No director, officer, employee, member or stockholder of the Company or any Restricted Subsidiary, as such, will have any liability for any obligations of the Company or the Restricted Subsidiaries under the Notes, the Indenture or the Guarantees to which they are a party, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws.

          15. Authentication. This Note shall not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

          16. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. [In addition to the rights provided to Holders under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes issued on the Issue Date shall have all the rights set forth in the Registration Rights Agreement dated as of April 20, 2006 † , among the Company, the Guarantors and the parties named on the signature pages thereof.] *

          17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP numbers to be printed on the Notes and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

          18. Governing Law. This Note shall be governed by, and construed in accordance with, the laws of the State of New York, without giving effect to the conflicts of laws principles thereof.

          The Company shall furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to:

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

†	For Additional Notes, insert the date of the Registration Rights Agreement for those Additional Notes.
*	Not to be included for Exchange Notes.

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ASSIGNMENT FORM

          To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
	(Insert assignee’s legal name)
		(Insert
assignee’s soc. sec. or tax I.D. no.)
		(Print
or type assignee’s name, address and zip code)
and irrevocably appoint

to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date:                     

Your Signature:
	(Sign exactly as your name appears on the face of this Note)

Signature Guarantee*:

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

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OPTION OF HOLDER TO ELECT PURCHASE

          If you want to elect to have this Note purchased by the Company pursuant to Section 4.11 or 4.20 of the Indenture, check the appropriate box below:

[   ] Section 4.11       [   ] Section 4.20

          If you want to elect to have only part of the Note purchased by the Company pursuant to Section 4.11 or Section 4.20 of the Indenture, state the amount you elect to have purchased:

$                     

Date:                    

Your Signature:

(Sign exactly as your name appears on the face of this Note)

Tax Identification No.:

Signature Guarantee*:                    

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

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SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE

     The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:

			Principal Amount
	Amount of Decrease	Amount of Increase	Maturity of this
	in Principal Amount	in Principal Amount	Global Following
	at Maturity of this	at Maturity of this	such Decrease (or
Date of Exchange	Global Note	Global Note	Increase)

A2-13

EXHIBIT B

FORM OF CERTIFICATE OF TRANSFER

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

WELLS FARGO BANK, N.A.
Corporate Trust Services
Sixth & Marquette; N9303-120
Minneapolis, MN 55479
Facsimile: (612) 667-9825
Attention: Brigham Exploration Administrator

          Re: 9 ⁵/₈% Senior Notes due 2014

          Reference is hereby made to the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture.

                               (the “Transferor”) owns and proposes to transfer the Note[s] or interest in such Note[s] specified in Annex A hereto, in the principal amount at maturity of $                      in such Note[s] or interests (the “Transfer”), to                                          (the “Transferee”), as further specified in Annex A hereto. In connection with the Transfer, the Transferor hereby certifies that:

[CHECK ALL THAT APPLY]

o       1. Check if Transferee will take delivery of a beneficial interest in the 144A Global Note or a Definitive Note Pursuant to Rule 144A. The Transfer is being effected pursuant to and in accordance with Rule 144A under the United States Securities Act of 1933, as amended (the “Securities Act”), and, accordingly, the Transferor hereby further certifies that the beneficial interest or Definitive Note is being transferred to a Person that the Transferor reasonably believed and believes is purchasing the beneficial interest or Definitive Note for its own account, or for one or more accounts with respect to which such Person exercises sole investment discretion, and such Person and each such account is a “qualified institutional buyer” within the meaning of Rule 144A in a transaction meeting the requirements of Rule 144A and such Transfer is in compliance with any applicable blue sky securities laws of any state of the United States. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the 144A Global Note and/or the Definitive Note and in the Indenture and the Securities Act.

B-1

o       2. Check if Transferee will take delivery of a beneficial interest in the Regulation S Temporary Global Note, the Regulation S Permanent Global Note or a Definitive Note pursuant to Regulation S. The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and, accordingly, the Transferor hereby further certifies that (i) the Transfer is not being made to a person in the United States and (x) at the time the buy order was originated, the Transferee was outside the United States or such Transferor and any Person acting on its behalf reasonably believed and believes that the Transferee was outside the United States or (y) the transaction was executed in, on or through the facilities of a designated offshore securities market and neither such Transferor nor any Person acting on its behalf knows that the transaction was prearranged with a buyer in the United States, (ii) no directed selling efforts have been made in contravention of the requirements of Rule 903(b) or Rule 904(b) of Regulation S under the Securities Act, (iii) the transaction is not part of a plan or scheme to evade the registration requirements of the Securities Act and (iv) if the proposed transfer is being made prior to the expiration of the Restricted Period, the transfer is not being made to a U.S. Person or for the account or benefit of a U.S. Person (other than an Initial Purchaser). Upon consummation of the proposed transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on Transfer enumerated in the Private Placement Legend printed on the Regulation S Permanent Global Note, the Regulation S Temporary Global Note and/or the Definitive Note and in the Indenture and the Securities Act.

o       3. Check and complete if Transferee will take delivery of a beneficial interest in the IAI Global Note or a Definitive Note pursuant to any provision of the Securities Act other than Rule 144A or Regulation S. The Transfer is being effected in compliance with the transfer restrictions applicable to beneficial interests in Restricted Global Notes and Restricted Definitive Notes and pursuant to and in accordance with the Securities Act and any applicable blue sky securities laws of any state of the United States, and accordingly the Transferor hereby further certifies that (check one):

          (a) £ such Transfer is being effected pursuant to and in accordance with Rule 144 under the Securities Act;

or

          (b) £ such Transfer is being effected to the Company or a subsidiary thereof;

or

          (c) £ such Transfer is being effected pursuant to an effective registration statement under the Securities Act and in compliance with the prospectus delivery requirements of the Securities Act;

or

          (d) £ such Transfer is being effected to an Institutional Accredited Investor and pursuant to an exemption from the registration requirements of the Securities Act other than Rule 144A, Rule 144 or Rule 904, and the Transferor hereby further certifies that it has not engaged in any general solicitation within the meaning of Regulation D under the Securities Act

B-2

and the Transfer complies with the transfer restrictions applicable to beneficial interests in a Restricted Global Note or Restricted Definitive Notes and the requirements of the exemption claimed, which certification is supported by (1) a certificate executed by the Transferee in the form of Exhibit D to the Indenture and (2) an Opinion of Counsel provided by the Transferor or the Transferee (a copy of which the Transferor has attached to this certification), to the effect that such Transfer is in compliance with the Securities Act. Upon consummation of the proposed transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the IAI Global Note and/or the Definitive Notes and in the Indenture and the Securities Act.

£       4. Check if Transferee will take delivery of a beneficial interest in an Unrestricted Global Note or of an Unrestricted Definitive Note.

          (a) £ Check if Transfer is Pursuant to Rule 144. (i) The Transfer is being effected pursuant to and in accordance with Rule 144 under the Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any state of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes, on Restricted Definitive Notes and in the Indenture.

          (b) £ Check if Transfer is Pursuant to Regulation S. (i) The Transfer is being effected pursuant to and in accordance with Rule 903 or Rule 904 under the Securities Act and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any state of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will no longer be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes, on Restricted Definitive Notes and in the Indenture.

          (c) £ Check if Transfer is Pursuant to Other Exemption. (i) The Transfer is being effected pursuant to and in compliance with an exemption from the registration requirements of the Securities Act other than Rule 144, Rule 903 or Rule 904 and in compliance with the transfer restrictions contained in the Indenture and any applicable blue sky securities laws of any State of the United States and (ii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act. Upon consummation of the proposed Transfer in accordance with the terms of the Indenture, the transferred beneficial interest or Definitive Note will not be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Global Notes or Restricted Definitive Notes and in the Indenture.

B-3

          This certificate and the statements contained herein are made for your benefit and the benefit of the Company.

[Insert Name of Transferor]
By:
	Name:
	Title:

Dated:                    

B-4

ANNEX A TO CERTIFICATE OF TRANSFER

1.	The Transferor owns and proposes to transfer the following:
[CHECK ONE OF (A) OR (B)]
£		(A)	a beneficial interest in the:
			(i) 144A Global Note (CUSIP                     ); or
			(ii)Regulation S Global Note (CUSIP                     ); or
			(iii)IAI Global Note (CUSIP                     ); or
£		(B)	a Restricted Definitive Note.
2.	After the Transfer the Transferee will hold:
[CHECK ONE]
£		(A)	a beneficial interest in the:
			(iv) 144A Global Note (CUSIP                     ); or
			(v) Regulation S Global Note (CUSIP                    ); or
			(vi)IAI Global Note (CUSIP                    ); or
			(vii)Unrestricted Global Note (CUSIP                    ); or
£		(B)	a Restricted Definitive Note; or
£		(C)	an Unrestricted Definitive Note,

in accordance with the terms of the Indenture.

B-5

EXHIBIT C

FORM OF CERTIFICATE OF EXCHANGE

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

WELLS FARGO BANK, N.A.
Corporate Trust Services
Sixth & Marquette; N9303-120
Minneapolis, MN 55479
Facsimile: (612) 667-9825
Attention: Brigham Exploration Administrator

          Re: 9 ⁵/₈% Senior Notes due 2014

          Reference is hereby made to the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture.

                                                   (the “Owner”) owns and proposes to exchange the Note[s] or interest in such Note[s] specified herein, in the principal amount at maturity of $                     in such Note[s] or interests (the “Exchange”). In connection with the Exchange, the Owner hereby certifies that:

          1. Exchange of Restricted Definitive Notes or Beneficial Interests in a Restricted Global Note for Unrestricted Definitive Notes or Beneficial Interests in an Unrestricted Global Note

          (a) £ Check if Exchange is from beneficial interest in a Restricted Global Note to beneficial interest in an Unrestricted Global Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for a beneficial interest in an Unrestricted Global Note in an equal principal amount at maturity, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Global Notes and pursuant to and in accordance with the United States Securities Act of 1933, as amended (the “Securities Act”), (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the beneficial interest in an Unrestricted Global Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

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          (b) £ Check if Exchange is from beneficial interest in a Restricted Global Note to Unrestricted Definitive Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Definitive Note is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

          (c) £ Check if Exchange is from Restricted Definitive Note to beneficial interest in an Unrestricted Global Note. In connection with the Owner’s Exchange of a Restricted Definitive Note for a beneficial interest in an Unrestricted Global Note, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the beneficial interest is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

          (d) £ Check if Exchange is from Restricted Definitive Note to Unrestricted Definitive Note. In connection with the Owner’s Exchange of a Restricted Definitive Note for an Unrestricted Definitive Note, the Owner hereby certifies (i) the Unrestricted Definitive Note is being acquired for the Owner’s own account without transfer, (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to Restricted Definitive Notes and pursuant to and in accordance with the Securities Act, (iii) the restrictions on transfer contained in the Indenture and the Private Placement Legend are not required in order to maintain compliance with the Securities Act and (iv) the Unrestricted Definitive Note is being acquired in compliance with any applicable blue sky securities laws of any state of the United States.

          2. Exchange of Restricted Definitive Notes or Beneficial Interests in Restricted Global Notes for Restricted Definitive Notes or Beneficial Interests in Restricted Global Notes

          (a) £ Check if Exchange is from beneficial interest in a Restricted Global Note to Restricted Definitive Note. In connection with the Exchange of the Owner’s beneficial interest in a Restricted Global Note for a Restricted Definitive Note with an equal principal amount at maturity, the Owner hereby certifies that the Restricted Definitive Note is being acquired for the Owner’s own account without transfer. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the Restricted Definitive Note issued will continue to be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the Restricted Definitive Note and in the Indenture and the Securities Act.

          (b) £ Check if Exchange is from Restricted Definitive Note to beneficial interest in a Restricted Global Note. In connection with the Exchange of the Owner’s Restricted

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Definitive Note for a beneficial interest in the [CHECK ONE] £ 144A Global Note, £ Regulation S Global Note, £ IAI Global Note with an equal principal amount at maturity, the Owner hereby certifies (i) the beneficial interest is being acquired for the Owner’s own account without transfer and (ii) such Exchange has been effected in compliance with the transfer restrictions applicable to the Restricted Global Notes and pursuant to and in accordance with the Securities Act, and in compliance with any applicable blue sky securities laws of any state of the United States. Upon consummation of the proposed Exchange in accordance with the terms of the Indenture, the beneficial interest issued will be subject to the restrictions on transfer enumerated in the Private Placement Legend printed on the relevant Restricted Global Note and in the Indenture and the Securities Act.

          This certificate and the statements contained herein are made for your benefit and the benefit of the Company.

[Insert Name of Transferor]
By:
	Name:
	Title:

Dated:                    

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EXHIBIT D

FORM OF CERTIFICATE FROM
ACQUIRING INSTITUTIONAL ACCREDITED INVESTOR

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

WELLS FARGO BANK, N.A.
Corporate Trust Services
Sixth & Marquette; N9303-120
Minneapolis, MN 55479
Facsimile: (612) 667-9825
Attention: Brigham Exploration Administrator

          Re: 9 ⁵/₈% Senior Notes due 2014

          Reference is hereby made to the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee. Capitalized terms used but not defined herein shall have the meanings given to them in the Indenture.

          In connection with our proposed purchase of $                     aggregate principal amount at maturity of:

          (a) beneficial interest in a Global Note, or

          (b) a Definitive Note,

          we confirm that:

          1. We understand that any subsequent transfer of the Notes or any interest therein is subject to certain restrictions and conditions set forth in the Indenture and the undersigned agrees to be bound by, and not to resell, pledge or otherwise transfer the Notes or any interest therein except in compliance with, such restrictions and conditions and the United States Securities Act of 1933, as amended (the “Securities Act”).

          2. We understand that the offer and sale of the Notes have not been registered under the Securities Act, and that the Notes and any interest therein may not be offered or sold except as permitted in the following sentence. We agree, on our own behalf and on behalf of any accounts for which we are acting as hereinafter stated, that if we should sell the Notes or any interest therein, we will do so only (A) to the Company or any subsidiary thereof,

D-1

(B) in accordance with Rule 144A under the Securities Act to a “qualified institutional buyer” (as defined therein), (C) to an institutional “accredited investor” (as defined below) that, prior to such transfer, furnishes (or has furnished on its behalf by a U.S. broker-dealer) to you and to the Company a signed letter substantially in the form of this letter and an Opinion of Counsel in form reasonably acceptable to the Company to the effect that such transfer is in compliance with the Securities Act, (D) outside the United States in accordance with Rule 904 of Regulation S under the Securities Act, (E) pursuant to the provisions of Rule 144(k) under the Securities Act or (F) pursuant to an effective registration statement under the Securities Act, and we further agree to provide to any person purchasing the Definitive Note or beneficial interest in a Global Note from us in a transaction meeting the requirements of clauses (A) through (E) of this paragraph a notice advising such purchaser that resales thereof are restricted as stated herein.

          3. We understand that, on any proposed resale of the Notes or beneficial interest therein, we will be required to furnish to you and the Company such certifications, legal opinions and other information as you and the Company may reasonably require to confirm that the proposed sale complies with the foregoing restrictions. We further understand that the Notes purchased by us will bear a legend to the foregoing effect.

          4. We are an institutional “accredited investor” (as defined in Rule 501(a)(1), (2), (3) or (7) of Regulation D under the Securities Act) and have such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of our investment in the Notes, and we and any accounts for which we are acting are each able to bear the economic risk of our or its investment.

          5. We are acquiring the Notes or beneficial interest therein purchased by us for our own account or for one or more accounts (each of which is an institutional “accredited investor”) as to each of which we exercise sole investment discretion.

          You and the Company are entitled to rely upon this letter and are irrevocably authorized to produce this letter or a copy hereof to any interested party in any administrative or legal proceedings or official inquiry with respect to the matters covered hereby.

[Insert Name of Accredited Investor]
By:
	Name:
	Title:

Dated:                    

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EXHIBIT E

FORM OF NOTATION OF GUARANTEE

          For value received, each Guarantor (which term includes any successor Person under the Indenture) has, jointly and severally, fully and unconditionally and irrevocably guaranteed, to the extent set forth in the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee (the “Trustee”), and subject to the provisions in the Indenture, (a) the due and punctual payment of the principal of, premium, if any, and interest on the Notes (as defined in the Indenture), whether at maturity, by acceleration, redemption or otherwise, the due and punctual payment of interest on overdue principal and premium, and, to the extent permitted by law, interest, and the due and punctual performance of all other obligations of the Company to the Holders or the Trustee all in accordance with the terms of the Indenture and (b) in case of any extension of time of payment or renewal of any Notes or any of such other obligations, that the same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. The obligations of the Guarantors to the Holders of Notes and to the Trustee pursuant to the Guarantee and the Indenture are expressly set forth in Article Ten of the Indenture and reference is hereby made to the Indenture for the precise terms of the Guarantee. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York.

[Name of Guarantor]
By:
	Name:
	Title:

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EXHIBIT F

FORM OF GUARANTOR SUPPLEMENTAL INDENTURE
TO BE DELIVERED BY GUARANTORS

     GUARANTOR SUPPLEMENTAL INDENTURE (this “Guarantor Supplemental Indenture”), dated as of                     , among Brigham Exploration Company (the “Company”), the Company’s subsidiaries listed on Schedule A hereto (each, a “New Guarantor”), the Company’s subsidiaries listed on Schedule B hereto (collectively the “Existing Guarantors”) and Wells Fargo Bank, N.A., as trustee under the Indenture referred to below (the “Trustee”).

WITNESSETH

     WHEREAS, the Company, the Existing Guarantors and the Trustee are parties to an indenture (the “Indenture”), dated as of April 20, 2006, providing for the issuance of 9 ⁵/₈% Senior Notes due 2014 (the “Notes”);

     WHEREAS, Section 9.01 of the Indenture provides that, without the consent of any Holders, the Company and the Existing Guarantors, when authorized by a Board Resolution, and the Trustee, at any time and from time to time, may modify, supplement or amend the Indenture to add a Guarantor or additional obligor under the Indenture or permit any Person to guarantee the Notes and/or obligations under the Indenture;

WHEREAS, each New Guarantor wishes to guarantee the Notes pursuant to the Indenture;

     WHEREAS, pursuant to the Indenture the Company, the Existing Guarantors, the New Guarantors and the Trustee have agreed to enter into this Guarantor Supplemental Indenture for the purposes stated herein; and

     WHEREAS, all things necessary have been done to make this Guarantor Supplemental Indenture, when executed and delivered by the Company,the Existing Guarantors and each New Guarantor, the legal, valid and binding agreement of the Company, the Existing Guarantors and each New Guarantor, in accordance with its terms.

     NOW THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Company, each New Guarantor, the Existing Guarantors and the Trustee mutually covenant and agree for the equal and ratable benefit of the Holders of the Notes as follows:

     (1) Capitalized Terms. Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.

     (2) Guarantee. Each New Guarantor hereby guarantees the Indenture and the Notes related thereto pursuant to the terms and conditions of Article Ten of the Indenture, such Article Ten being incorporated by reference herein as if set forth at length herein (each such guarantee, a “Guarantee”) and such New Guarantor agrees to be bound as a Guarantor under the Indenture as

F-1

if it had been an initial signatory thereto; provided that the New Guarantor can be released from its Guarantee to the same extent as any other Guarantor under the Indenture.

     (3) GOVERNING LAW. THIS GUARANTOR SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE CONFLICTS OF LAWS PRINCIPLES THEREOF.

     (4) Counterparts. The parties may sign any number of copies of this Guarantor Supplemental Indenture. Each signed copy shall be an original, but all of them together represent the same agreement.

     (5) Effect of Headings. The section headings herein are for convenience only and shall not affect the construction hereof.

     (6) The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Guarantor Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Company, Existing Guarantors and the New Guarantors.

F-2

     IN WITNESS WHEREOF, the parties hereto have caused this Guarantor Supplemental Indenture to be duly executed and attested, all as of the date first above written.

Dated:

BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By:
	Name:
	Title:
EACH GUARANTOR LISTED ON
SCHEDULE A HERETO
By:
	Name:
	Title:
EACH GUARANTOR LISTED ON
SCHEDULE B HERETO
By:
	Name:
	Title:
WELLS FARGO BANK, N.A.,
as Trustee
By:
	Authorized Signatory

F-3

EXHIBIT G

FORM OF INTERCOMPANY NOTE

                    , 20[      ]

          FOR VALUE RECEIVED,                     , a                      corporation (the “Maker”), HEREBY PROMISES TO PAY ON DEMAND to the order of                      (the “Holder”) the principal sum of the aggregate unpaid principal amount of all Loans (plus accrued interest thereon) at any time and from time to time made by the Holder to the Maker (the “Loans”).

          All capitalized terms used herein that are defined in, or by reference in, the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee, have the meanings assigned to such terms therein, or by reference therein, unless otherwise defined.

ARTICLE I
TERMS OF INTERCOMPANY NOTE

          Section 1.01 Interest: Prepayment. (a) The interest rate (“Interest Rate”) on each Loan shall be as from time to time agreed by the Holder and the Maker, but in no event to exceed the maximum amount permitted by applicable law.

          (b) The interest, if any, payable on each of the Loans shall accrue from the date such Loan is made and, subject to Section 2.01, shall be payable upon demand of the Holder.

          (c) Subject to Section 2.01, any amounts hereunder may be repaid at any time by the Maker.

          Section 1.02 Subordination. To the extent provided in Section 2.01, all Loans hereunder shall be subordinated in right of payment to the prior payment in full in cash of all Obligations with respect to the Notes, in the case of the Company, or the Guarantee, in the case of a Guarantor.

ARTICLE II
EVENTS OF DEFAULT

          Section 2.01 Events of Default. If after the date of issuance of this Loan an Event of Default has occurred under the Indenture, then in the event the Maker is the Company or any Guarantor, the amounts owing under the Loans hereunder shall not be due and payable and shall not be paid until all Obligations under the Notes, in the case of the Company, and the Guarantee, in the case of a Guarantor, are paid in full in cash; provided, however, that if such Event of Default has been waived, cured or rescinded, such amounts may be paid. The Holder hereby agrees that if it receives any payments or distributions on any Loan from the Company or any Guarantor which is not payable pursuant to the prior sentence after any Event of Default has

G-1

occurred, is continuing and has not been waived, cured or rescinded, it will pay over and deliver forthwith to the Company or such Guarantor, all such payments and distributions.

ARTICLE III
MISCELLANEOUS

          Section 3.01 Amendments, Etc. No amendment or waiver of any provision of this intercompany note, or consent to depart herefrom is permitted at any time for any reason, except with the consent of the Holders of at least a majority in aggregate principal amount of the Notes (including Additional Notes, if any) then outstanding.

          Section 3.02 Third Party Beneficiaries. The holders of the Notes or any other Indebtedness ranking pari passu with the Notes or any Guarantees, including without limitation, any Indebtedness incurred under the Senior Credit Agreement, shall be third party beneficiaries to this intercompany note and upon an Event of Default shall have the right to enforce the subordination provisions of this intercompany note against the Holder.

          Section 3.03 Headings. Article and Section headings in this intercompany note are included for convenience of reference only and shall not constitute a part of this intercompany note for any other purpose.

          Section 3.04 Entire Agreement. This intercompany note sets forth the entire agreement of the parties with respect to its subject matter and supersedes all previous understandings, written or oral, in respect thereof.

          Section 3.05 GOVERNING LAW. THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF TEXAS, WITHOUT GIVING EFFECT TO THE CONFLICTS OF LAW PRINCIPLES THEREOF.

          Section 3.06 Waivers. The Maker hereby waives presentment, demand for payment, notice of protest and all other demands and notices in connection with the delivery, acceptance, performance or enforcement hereof.

[NAME OF MAKER]

By:

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EX-4.2

EXHIBIT 4.2

NOTATION OF GUARANTEE

     For value received, each Guarantor (which term includes any successor Person under the Indenture) has, jointly and severally, fully and unconditionally and irrevocably guaranteed, to the extent set forth in the Indenture, dated as of April 20, 2006 (the “Indenture”), among Brigham Exploration Company, a Delaware corporation (the “Company”), the Guarantors and Wells Fargo Bank, N.A., as trustee (the “Trustee”), and subject to the provisions in the Indenture, (a) the due and punctual payment of the principal of, premium, if any, and interest on the Notes (as defined in the Indenture), whether at maturity, by acceleration, redemption or otherwise, the due and punctual payment of interest on overdue principal and premium, and, to the extent permitted by law, interest, and the due and punctual performance of all other obligations of the Company to the Holders or the Trustee all in accordance with the terms of the Indenture and (b) in case of any extension of time of payment or renewal of any Notes or any of such other obligations, that the same will be promptly paid in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. The obligations of the Guarantors to the Holders of Notes and to the Trustee pursuant to the Guarantee and the Indenture are expressly set forth in Article Ten of the Indenture and reference is hereby made to the Indenture for the precise terms of the Guarantee. This Guarantee shall be governed by and construed in accordance with the laws of the State of New York.

BRIGHAM, INC.
By:	/s/ Eugene B. Shepherd, Jr.
	Name: Eugene B. Shepherd, Jr.
	Title:    Chief Financial Officer
BRIGHAM OIL & GAS, L.P.
By:	BRIGHAM, INC.,
	Its managing general partner
By:	/s/ Eugene B. Shepherd, Jr.
	Name: Eugene B. Shepherd, Jr.
	Title:    Chief Financial Officer

EX-4.3

EXHIBIT 4.3

[Face of Note]

     UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

     THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.07(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.12 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

     THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A

UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

CUSIP 109178AA1

No. 1 $125,000,000

BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

     Brigham Exploration Company, a Delaware corporation (the “Company”), which term includes any successor under the Indenture hereinafter referred to, for value received, promises to pay to CEDE & CO., or its registered assigns, the principal sum of One Hundred Twenty Five Million ($125,000,000) UNITED STATES DOLLARS on May 1, 2014.

Interest Payment Dates: May 1 and November 1 of each year, commencing November 1, 2006.

Regular Record Dates: April 15 and October 15 of each year.

     Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Date of Issuance: April 20, 2006

     IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile by its duly authorized officers.

BRIGHAM EXPLORATION COMPANY, a
Delaware corporation
By:	/s/ Ben M. Brigham
	Name:	Ben M. Brigham
	Title:	Chief Executive Officer, President and
		Chairman
By:	/s/ Eugene B. Shepherd, Jr.
	Name:	Eugene B. Shepherd, Jr.
	Title:	Executive Vice President and Chief
		Financial Officer

Trustee’s Certificate of Authentication

     This is one of the 9 ⁵/₈% Senior Notes due 2014 described in the within-mentioned Indenture.

WELLS FARGO BANK, N.A.,
as Trustee
By:	/s/ Timothy P. Mowdy
	Authorized Signatory

Date: April 20, 2006

[Reverse Side of Note]
BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

     Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

     1. Interest. The Company promises to pay interest on the principal amount of this Note at 9.625% per annum from the date hereof until maturity and shall pay Additional Interest, if any, as provided in the Registration Rights Agreement, dated April 20, 2006 referred below. The Company shall pay interest and Additional Interest, if any, semi-annually in arrears on May 1 and November 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes shall accrue from the most recent date to which interest has been paid on the Notes (or one or more Predecessor Notes) or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be November 1, 2006. The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is 1% per annum in excess of the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest and Additional Interest (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful. Interest shall be computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a Business Day, payment may be made on the next succeeding day that is a Business Day, and no interest shall accrue on such payment for the intervening period.

     2. Method of Payment. The Company shall pay interest on the Notes (except defaulted interest and Additional Interest, if any) to the Persons in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the April 15th or October 15th immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.13 of the Indenture with respect to defaulted interest. The Company shall pay all Additional Interest, if any, on the dates of its choosing and in the amounts set forth in the Registration Rights Agreement. The Notes shall be payable as to principal, premium, if any, and interest and Additional Interest, if any, at the office or agency of the Company maintained for such purpose, or, at the option of the Company, payment of interest and Additional Interest, if any, may be made by check mailed to the Holders at their addresses set forth in the register of Holders, and provided that payment by wire transfer of immediately available funds shall be required with respect to principal of and interest, premium, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying

Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

     3. Paying Agent and Registrar. Initially, Wells Fargo Bank, N.A., the Trustee under the Indenture, shall act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity.

     4. Indenture. The Company issued the Notes under an Indenture dated as of April 20, 2006 (the “Indenture”) among the Company, the Initial Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Indenture pursuant to which this Note is issued provides that an unlimited amount of Additional Notes may be issued thereunder, subject to compliance with the covenants therein.

     5. Optional Redemption. (a) On or after May 1, 2010, the Company may redeem all or a portion of the Notes, on not less than 30 nor more than 60 days’ prior notice, in amounts of $1,000 or whole multiples of $1,000 in excess thereof at the following redemption prices (expressed as percentages of the principal amount), set forth below plus accrued and unpaid interest, if any, thereon, to the applicable redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date), if redeemed during the twelve-month period beginning on May 1 of the years indicated below:

Year	Redemption Price
2010		104.813	%
2011		102.406	%
2012 and thereafter		100.000	%

     (b) In addition, at any time and from time to time prior to May 1, 2009, the Company may use the net proceeds of one or more Equity Offerings to redeem up to an aggregate of 35% of the aggregate principal amount of Notes issued under the Indenture (including the principal amount of any Additional Notes issued under the Indenture) at a redemption price equal to 109.625% of the aggregate principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to the redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date); provided that this redemption provision shall not be applicable with respect to any transaction that results in a Change of Control. At least 65% of the aggregate principal amount of Notes (including the principal amount of any Additional Notes issued under the Indenture) must remain outstanding immediately after the occurrence of such redemption. In order to effect this redemption, the Company must mail a notice of redemption no later than 30 days after the closing of the related Equity Offering and must complete such redemption within 60 days of the closing of the Equity Offering.

     6. Mandatory Redemption. The Company shall not be required to make mandatory redemption or sinking fund payments with respect to the Notes.

     7. Repurchase at Option of Holders.

     (a) Upon the occurrence of a Change of Control, each Holder may require the Company to purchase such Holder’s Notes in whole or in part in amounts of $1,000 or whole multiples of $1,000 in excess thereof, at a purchase price in cash in an amount equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to the date of purchase, pursuant to a Change of Control Offer in accordance with the procedures set forth in the Indenture.

     (a) Under certain circumstances described in the Indenture, the Company will be required to apply the proceeds of Asset Sales to the repayment of the Notes and/or Pari Passu Indebtedness.

     8. Selection and Notice of Redemption. If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be redeemed or purchased among the Holders of the Notes not more than 60 days prior to the redemption date in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance with any other method the Trustee considers fair and reasonable. Redemptions pursuant to Section 3.07(b) of the Indenture shall be made on a pro rata basis or on as nearly a pro rata basis as practicable (subject to the provisions of the Depositary). In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the redemption date by the Trustee from the outstanding Notes not previously called for redemption. Notices of redemption may not be conditional. If any Note is to be redeemed in part only, the notice of redemption that relates to that Note will state the portion of the principal amount thereof to be redeemed. A new Note in principal amount equal to the unredeemed portion of the original Note will be issued in the name of the Holder thereof upon cancellation of the original Note. Notes called for redemption become due on the date fixed for redemption. On and after the redemption date, interest and Addditional Interest, if any, shall cease to accrue on Notes or portions of them called for redemption.

     9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $1,000 and whole multiples of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company is not required to transfer or exchange any Note selected for redemption. Also, the Company is not required to transfer or exchange any Note for a period of 15 days before a selection of Notes to be redeemed.

     10. Persons Deemed Owners. The registered Holder of a Note will be treated as its owner for all purposes.

     11. Amendment, Supplement and Waiver. The Indenture or the Notes may be amended or supplemented only as provided in the Indenture.

     12. Defaults. In the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization specified in the Inndenture, with respect to the Company or any Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may, and the Trustee at the request of such Holders shall, declare all unpaid principal of, premium, if any, and accrued interest on all Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee if given by the Holders of the Notes) and upon any such declaration, such principal, premium, if any, and interest shall become due and payable immediately. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest) if it determines that withholding notice is in their interest. The Holders of not less than a majority in aggregate principal amount of the Notes outstanding by notice to the Trustee may on behalf of the Holders of all outstanding Notes waive any past Default and its consequences under the Indenture except a Default (1) in the payment of the principal of, premium, if any, or interest on any Note (which may only be waived with the consent of each Holder of Notes affected) or (2) in respect of a covenant or provision which under the Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment.

     13. Trustee Dealings with the Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its            Affiliates, as if it were not the Trustee.

     14. No Recourse Against Others. No director, officer, employee, member or stockholder of the Company or any Restricted Subsidiary, as such, will have any liability for any obligations of the Company or the Restricted Subsidiaries under the Notes, the Indenture or the Guarantees to which they are a party, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws.

     15. Authentication. This Note shall not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

     16. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. In addition to the rights provided to Holders under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes issued on the Issue Date shall have all the rights set forth in the Registration Rights Agreement dated as of April 20, 2006, among the Company, the Guarantors and the parties named on the signature pages thereof.

     17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP

numbers to be printed on the Notes and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

     18. Governing Law. This Note shall be governed by, and construed in accordance with, the laws of the State of New York, without giving effect to the conflicts of laws principles thereof.

     The Company shall furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to:

BRIGHAM EXPLORATION COMPANY
6300 Bridge Point Parkway
Building Two, Suite 500
Austin, Texas 78730
Facsimile: (512) 427-3400
Attention: Warren J. Ludlow, General Counsel

ASSIGNMENT FORM

     To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
		(Insert assignee’s legal name)
			(Insert
	assignee’s soc. sec. or tax I.D. no.)
			(Print
	or type assignee’s name, address and zip code)
and irrevocably appoint

to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date:                                         

Your Signature:
	(Sign exactly as your name appears on the face of this Note)

Signature Guarantee*:

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

OPTION OF HOLDER TO ELECT PURCHASE

     If you want to elect to have this Note purchased by the Company pursuant to Section 4.11 or 4.20 of the Indenture, check the appropriate box below:

[ ] Section 4.11       [ ] Section 4.20

     If you want to elect to have only part of the Note purchased by the Company pursuant to Section 4.11 or Section 4.20 of the Indenture, state the amount you elect to have purchased:

		$
Date:
	Your		Signature:
				(Sign exactly as your name appears on the face of this Note)
	Tax		Identification No.:

Signature Guarantee*:                                        

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE

     The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:

			Principal Amount
	Amount of Decrease	Amount of Increase	Maturity of this
	in Principal Amount	in Principal Amount	Global Following
	at Maturity of this	at Maturity of this	such Decrease (or
Date of Exchange	Global Note	Global Note	Increase)

EX-4.4

EXHIBIT 4.4

[Face of Note]

          UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

          THIS GLOBAL NOTE IS HELD BY THE DEPOSITARY (AS DEFINED IN THE INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY CIRCUMSTANCES EXCEPT THAT (1) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY BE REQUIRED PURSUANT TO SECTION 2.07 OF THE INDENTURE, (2) THIS GLOBAL NOTE MAY BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.07(a) OF THE INDENTURE, (3) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR CANCELLATION PURSUANT TO SECTION 2.12 OF THE INDENTURE AND (4) THIS GLOBAL NOTE MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITARY WITH THE PRIOR WRITTEN CONSENT OF THE COMPANY.

          THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A

UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.

CUSIP U6224KAA7

No. 1 $0

BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Brigham Exploration Company, a Delaware corporation (the “Company”), which term includes any successor under the Indenture hereinafter referred to, for value received, promises to pay to CEDE & CO., or its registered assigns, the principal sum of Zero ($0) UNITED STATES DOLLARS on May 1, 2014.

Interest Payment Dates: May 1 and November 1 of each year, commencing November 1, 2006.

Regular Record Dates: April 15 and October 15 of each year.

          Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all purposes have the same effect as if set forth at this place.

Date of Issuance: April 20, 2006

          IN WITNESS WHEREOF, the Company has caused this Note to be signed manually or by facsimile by its duly authorized officers.

BRIGHAM EXPLORATION COMPANY, a
Delaware corporation
By:	/s/ Ben M. Brigham
	Name:	Ben M. Brigham
	Title:	Chief Executive Officer, President and Chairman
By:	/s/ Eugene B. Shepherd, Jr.
	Name:	Eugene B. Shepherd, Jr.
	Title:	Executive Vice President and Chief
		Financial Officer

Trustee’s Certificate of Authentication

     This is one of the 9 ⁵/₈% Senior Notes due 2014 described in the within-mentioned Indenture.

	WELLS FARGO BANK, N.A.,
	as Trustee
	By:	/s/ Timothy P. Mowdy
		Authorized Signatory
Date: April 20, 2006

[Reverse Side of Note]
BRIGHAM EXPLORATION COMPANY

9 ⁵/₈% Senior Notes due 2014

          Capitalized terms used herein shall have the meanings assigned to them in the Indenture referred to below unless otherwise indicated.

          1. Interest. The Company promises to pay interest on the principal amount of this Note at 9.625% per annum from the date hereof until maturity and shall pay Additional Interest, if any, as provided in the Registration Rights Agreement, dated April 20, 2006 referred below. The Company shall pay interest and Additional Interest, if any, semi-annually in arrears on May 1 and November 1 of each year, or if any such day is not a Business Day, on the next succeeding Business Day (each an “Interest Payment Date”). Interest on the Notes shall accrue from the most recent date to which interest has been paid on the Notes (or one or more Predecessor Notes) or, if no interest has been paid, from the date of original issuance; provided that if there is no existing Default in the payment of interest, and if this Note is authenticated between a record date referred to on the face hereof and the next succeeding Interest Payment Date, interest shall accrue from such next succeeding Interest Payment Date; provided further that the first Interest Payment Date shall be November 1, 2006. The Company shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue principal and premium, if any, from time to time on demand at a rate that is 1% per annum in excess of the rate then in effect; it shall pay interest (including post-petition interest in any proceeding under any Bankruptcy Law) on overdue installments of interest and Additional Interest (without regard to any applicable grace periods) from time to time on demand at the same rate to the extent lawful. Interest shall be computed on the basis of a 360-day year of twelve 30-day months. If a payment date is not a Business Day, payment may be made on the next succeeding day that is a Business Day, and no interest shall accrue on such payment for the intervening period.

          2. Method of Payment. The Company shall pay interest on the Notes (except defaulted interest and Additional Interest, if any) to the Persons in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the April 15th or October 15th immediately preceding the Interest Payment Date, even if such Notes are canceled after such record date and on or before such Interest Payment Date, except as provided in Section 2.13 of the Indenture with respect to defaulted interest. The Company shall pay all Additional Interest, if any, on the dates of its choosing and in the amounts set forth in the Registration Rights Agreement. The Notes shall be payable as to principal, premium, if any, and interest and Additional Interest, if any, at the office or agency of the Company maintained for such purpose, or, at the option of the Company, payment of interest and Additional Interest, if any, may be made by check mailed to the Holders at their addresses set forth in the register of Holders, and provided that payment by wire transfer of immediately available funds shall be required with respect to principal of and interest, premium, if any, on, all Global Notes and all other Notes the Holders of which shall have provided wire transfer instructions to the Company or the Paying

Agent. Such payment shall be in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts.

          3. Paying Agent and Registrar. Initially, Wells Fargo Bank, N.A., the Trustee under the Indenture, shall act as Paying Agent and Registrar. The Company may change any Paying Agent or Registrar without notice to any Holder. The Company or any of its Subsidiaries may act in any such capacity.

          4. Indenture. The Company issued the Notes under an Indenture dated as of April 20, 2006 (the “Indenture”) among the Company, the Initial Guarantors and the Trustee. The terms of the Notes include those stated in the Indenture and those made part of the Indenture by reference to the Trust Indenture Act of 1939, as amended. The Notes are subject to all such terms, and Holders are referred to the Indenture and such Act for a statement of such terms. To the extent any provision of this Note conflicts with the express provisions of the Indenture, the provisions of the Indenture shall govern and be controlling. The Indenture pursuant to which this Note is issued provides that an unlimited amount of Additional Notes may be issued thereunder, subject to compliance with the covenants therein.

          5. Optional Redemption. (a) On or after May 1, 2010, the Company may redeem all or a portion of the Notes, on not less than 30 nor more than 60 days’ prior notice, in amounts of $1,000 or whole multiples of $1,000 in excess thereof at the following redemption prices (expressed as percentages of the principal amount), set forth below plus accrued and unpaid interest, if any, thereon, to the applicable redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date), if redeemed during the twelve-month period beginning on May 1 of the years indicated below:

Year	Redemption Price
2010		104.813	%
2011		102.406	%
2012 and thereafter		100.000	%

          (b) In addition, at any time and from time to time prior to May 1, 2009, the Company may use the net proceeds of one or more Equity Offerings to redeem up to an aggregate of 35% of the aggregate principal amount of Notes issued under the Indenture (including the principal amount of any Additional Notes issued under the Indenture) at a redemption price equal to 109.625% of the aggregate principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to the redemption date (subject to the rights of holders of record on relevant record dates to receive interest due on an interest payment date); provided that this redemption provision shall not be applicable with respect to any transaction that results in a Change of Control. At least 65% of the aggregate principal amount of Notes (including the principal amount of any Additional Notes issued under the Indenture) must remain outstanding immediately after the occurrence of such redemption. In order to effect this redemption, the Company must mail a notice of redemption no later than 30 days after the closing of the related Equity Offering and must complete such redemption within 60 days of the closing of the Equity Offering.

          6. Mandatory Redemption. The Company shall not be required to make mandatory redemption or sinking fund payments with respect to the Notes.

          7. Repurchase at Option of Holders.

          (a) Upon the occurrence of a Change of Control, each Holder may require the Company to purchase such Holder’s Notes in whole or in part in amounts of $1,000 or whole multiples of $1,000 in excess thereof, at a purchase price in cash in an amount equal to 101% of the principal amount thereof, plus accrued and unpaid interest, if any, to the date of purchase, pursuant to a Change of Control Offer in accordance with the procedures set forth in the Indenture.

          (a) Under certain circumstances described in the Indenture, the Company will be required to apply the proceeds of Asset Sales to the repayment of the Notes and/or Pari Passu Indebtedness.

          8. Selection and Notice of Redemption. If less than all of the Notes are to be redeemed or purchased in an offer to purchase at any time, the Trustee shall select the Notes to be redeemed or purchased among the Holders of the Notes not more than 60 days prior to the redemption date in compliance with the requirements of the principal national securities exchange, if any, on which the Notes are listed or, if the Notes are not so listed, on a pro rata basis, by lot or in accordance with any other method the Trustee considers fair and reasonable. Redemptions pursuant to Section 3.07(b) of the Indenture shall be made on a pro rata basis or on as nearly a pro rata basis as practicable (subject to the provisions of the Depositary). In the event of partial redemption by lot, the particular Notes to be redeemed shall be selected, unless otherwise provided herein, not less than 30 nor more than 60 days prior to the redemption date by the Trustee from the outstanding Notes not previously called for redemption. Notices of redemption may not be conditional. If any Note is to be redeemed in part only, the notice of redemption that relates to that Note will state the portion of the principal amount thereof to be redeemed. A new Note in principal amount equal to the unredeemed portion of the original Note will be issued in the name of the Holder thereof upon cancellation of the original Note. Notes called for redemption become due on the date fixed for redemption. On and after the redemption date, interest and Addditional Interest, if any, shall cease to accrue on Notes or portions of them called for redemption.

          9. Denominations, Transfer, Exchange. The Notes are in registered form without coupons in denominations of $1,000 and whole multiples of $1,000 in excess thereof. The transfer of Notes may be registered and Notes may be exchanged as provided in the Indenture. The Registrar and the Trustee may require a Holder, among other things, to furnish appropriate endorsements and transfer documents and the Company may require a Holder to pay any taxes and fees required by law or permitted by the Indenture. The Company is not required to transfer or exchange any Note selected for redemption. Also, the Company is not required to transfer or exchange any Note for a period of 15 days before a selection of Notes to be redeemed.

          10. Persons Deemed Owners. The registered Holder of a Note will be treated as its owner for all purposes.

          11. Amendment, Supplement and Waiver. The Indenture or the Notes may be amended or supplemented only as provided in the Indenture.

          12. Defaults. In the case of an Event of Default arising from certain events of bankruptcy, insolvency or reorganization specified in the Inndenture, with respect to the Company or any Significant Subsidiary, all outstanding Notes will become due and payable immediately without further action or notice. If any other Event of Default occurs and is continuing, the Trustee or the Holders of at least 25% in principal amount of the then outstanding Notes may, and the Trustee at the request of such Holders shall, declare all unpaid principal of, premium, if any, and accrued interest on all Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee if given by the Holders of the Notes) and upon any such declaration, such principal, premium, if any, and interest shall become due and payable immediately. The Trustee may withhold from Holders of the Notes notice of any continuing Default or Event of Default (except a Default or Event of Default relating to the payment of principal or interest) if it determines that withholding notice is in their interest. The Holders of not less than a majority in aggregate principal amount of the Notes outstanding by notice to the Trustee may on behalf of the Holders of all outstanding Notes waive any past Default and its consequences under the Indenture except a Default (1) in the payment of the principal of, premium, if any, or interest on any Note (which may only be waived with the consent of each Holder of Notes affected) or (2) in respect of a covenant or provision which under the Indenture cannot be modified or amended without the consent of the Holder of each Note affected by such modification or amendment.

          13. Trustee Dealings with the Company. The Trustee, in its individual or any other capacity, may make loans to, accept deposits from, and perform services for the Company or its Affiliates, and may otherwise deal with the Company or its Affiliates, as if it were not the Trustee.

          14. No Recourse Against Others. No director, officer, employee, member or stockholder of the Company or any Restricted Subsidiary, as such, will have any liability for any obligations of the Company or the Restricted Subsidiaries under the Notes, the Indenture or the Guarantees to which they are a party, or for any claim based on, in respect of, or by reason of, such obligations or their creation. Each Holder of Notes by accepting a Note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the Notes. The waiver may not be effective to waive liabilities under the federal securities laws.

          15. Authentication. This Note shall not be valid until authenticated by the manual signature of the Trustee or an authenticating agent.

          16. Additional Rights of Holders of Restricted Global Notes and Restricted Definitive Notes. In addition to the rights provided to Holders under the Indenture, Holders of Restricted Global Notes and Restricted Definitive Notes issued on the Issue Date shall have all the rights set forth in the Registration Rights Agreement dated as of April 20, 2006, among the Company, the Guarantors and the parties named on the signature pages thereof.

          17. CUSIP Numbers. Pursuant to a recommendation promulgated by the Committee on Uniform Security Identification Procedures, the Company has caused CUSIP

numbers to be printed on the Notes and the Trustee may use CUSIP numbers in notices of redemption as a convenience to Holders. No representation is made as to the accuracy of such numbers either as printed on the Notes or as contained in any notice of redemption and reliance may be placed only on the other identification numbers placed thereon.

          18. Governing Law. This Note shall be governed by, and construed in accordance with, the laws of the State of New York, without giving effect to the conflicts of laws principles thereof.

          The Company shall furnish to any Holder upon written request and without charge a copy of the Indenture. Requests may be made to:

BRIGHAM EXPLORATION COMPANY

6300 Bridge Point Parkway

Building Two, Suite 500

Austin, Texas 78730

Facsimile: (512) 427-3400

Attention: Warren J. Ludlow, General Counsel

ASSIGNMENT FORM

          To assign this Note, fill in the form below:

(I) or (we) assign and transfer this Note to:
		(Insert assignee’s legal name)
			(Insert
			w
	assignee’s soc.sec. or tax I.D. no.)
			(Print
	or type assignee’s name, address and zip code)
and irrevocably appoint

to transfer this Note on the books of the Company. The agent may substitute another to act for him.

Date:
	Your Signature:
		(Sign exactly as your name appears on the face of this Note)
Signature Guarantee*:

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

OPTION OF HOLDER TO ELECT PURCHASE

          If you want to elect to have this Note purchased by the Company pursuant to Section 4.11 or 4.20 of the Indenture, check the appropriate box below:

[ ] Section 4.11            [ ] Section 4.20

          If you want to elect to have only part of the Note purchased by the Company pursuant to Section 4.11 or Section 4.20 of the Indenture, state the amount you elect to have purchased:

Date:	$
	Your Signature:
		(Sign exactly as your name appears on the
		face of this Note)
	Tax Identification No.:
Signature Guarantee*:

* Participant in a recognized Signature Guarantee Medallion Program (or other signature guarantor acceptable to the Trustee).

SCHEDULE OF EXCHANGES OF INTERESTS IN THE GLOBAL NOTE

          The following exchanges of a part of this Global Note for an interest in another Global Note or for a Definitive Note, or exchanges of a part of another Global Note or Definitive Note for an interest in this Global Note, have been made:

			Principal Amount
	Amount of Decrease	Amount of Increase	Maturity of this
	in Principal Amount	in Principal Amount	Global Following
	at Maturity of this	at Maturity of this	such Decrease (or
Date of Exchange	Global Note	Global Note	Increase)

EX-10.1

EXHIBIT 10.1

BRIGHAM EXPLORATION COMPANY

$125,000,000 9 ⁵/₈% Senior Notes due 2014

PURCHASE AGREEMENT

dated April 12, 2006

Banc of America Securities LLC

Credit Suisse Securities (USA) LLC

Greenwich Capital Markets, Inc.

BNP Paribas Securities Corp.

Hibernia South Coast Capital, Inc.

Natexis Bleichroeder, Inc.

Table of Contents

Section 1.		Representations and Warranties	3
	(a)	No Registration Required	3
	(b)	No Integration of Offerings or General Solicitation	3
	(c)	Eligibility for Resale under Rule 144A	3
	(d)	The Offering Memorandum	4
	(e)	The Purchase Agreement	4
	(f)	The Registration Rights Agreement	4
	(g)	The DTC Agreement	4
	(h)	Authorization of the Notes, the Exchange Notes and the Guarantees	5
	(i)	Authorization of the Indenture	5
	(j)	Description of the Securities and the Indenture	6
	(k)	No Material Adverse Change	6
	(l)	Independent Accountants	6
	(m)	Independent Petroleum Engineers	6
	(n)	Preparation of the Financial Statements	7
	(o)	Incorporation and Good Standing of the Company and its Subsidiaries	7
	(p)	Capitalization and Other Capital Stock Matters	8
	(q)	NASDAQ Listing	8
	(r)	Non-Contravention of Existing Instruments; No Further Authorizations or Approvals Required	8
	(s)	No Material Actions or Proceedings	9
	(t)	Intellectual Property Rights	10
	(u)	All Necessary Permits, etc	10
	(v)	Title to Properties	10
	(w)	Tax Law Compliance	11
	(x)	Not an Investment Company	11
	(y)	Insurance	11
	(z)	No Price Stabilization or Manipulation	12
	(aa)	Solvency	12
	(bb)	Compliance with Sarbanes-Oxley	12
	(cc)	MD&A	12
	(dd)	Company’s Accounting System	12
	(ee)	Disclosure Controls and Procedures	13
	(ff)	Compliance with Environmental Laws	13
	(gg)	Periodic Review of Costs of Environmental Compliance	14
	(hh)	ERISA Compliance	14
	(ii)	Compliance with Labor Laws	15
	(jj)	Related Party Transactions	15
	(kk)	No Unlawful Contributions or Other Payments	16
	(ll)	Compliance with Regulation S	16
	(mm)	Taxes; Fees	16
Section 2.		Purchase, Sale and Delivery of the Securities	16
	(a)	The Securities	17
	(b)	The Closing Date	17
	(c)	Delivery of the Securities	17
	(d)	Initial Purchasers as Qualified Institutional Buyers	17

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Section 3.		Additional Covenants	17
	(a)	Preparation of Final Offering Memorandum; Initial Purchasers’ Review of Proposed Amendments and Supplements	17
	(b)	Amendments and Supplements to the Final Offering Memorandum and Other Securities Act Matters	18
	(c)	Copies of the Offering Memorandum	19
	(d)	Blue Sky Compliance	19
	(e)	Use of Proceeds	19
	(f)	The Depositary	19
	(g)	Additional Issuer Information	19
	(h)	Agreement Not To Offer or Sell Additional Securities	20
	(i)	Future Reports to the Initial Purchasers	20
	(j)	No Integration	20
	(k)	No Restricted Resales	21
	(l)	Legended Securities	21
	(m)	PORTAL	21
Section 4.		Payment of Expenses	21
Section 5.		Conditions of the Obligations of the Initial Purchasers	22
	(a)	Accountants’ Comfort Letter	22
	(b)	No Material Adverse Change or Ratings Agency Change	22
	(c)	Opinion of Counsel for the Company	23
	(d)	Opinion of Counsel for the Initial Purchasers	23
	(e)	Officers’ Certificate	23
	(f)	Engineers Letter	23
	(g)	PORTAL Listing	23
	(h)	Registration Rights Agreement and Indenture	24
	(i)	Additional Documents	24
Section 6.		Reimbursement of Initial Purchasers’ Expenses	24
Section 7.		Offer, Sale and Resale Procedures	24
Section 8.		Indemnification	26
	(a)	Indemnification of the Initial Purchasers	26
	(b)	Indemnification of the Company and the Guarantors	27
	(c)	Notifications and Other Indemnification Procedures	28
	(d)	Settlements	29
Section 9.		Contribution	29
Section 10.		Termination of this Agreement	31
Section 11.		Representations and Indemnities to Survive Delivery	31
Section 12.		Notices	31
Section 13.		Successors	32
Section 14.		Partial Unenforceability	32
Section 15.		Governing Law Provisions	33
	(a)	Consent to Jurisdiction	33
Section 16.		Default of One or More of the Several Initial Purchasers	33
Section 17.		No Advisory or Fiduciary Responsibility	34
Section 18.		General Provisions	35

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PURCHASE AGREEMENT

April 12, 2006

BANC OF AMERICA SECURITIES LLC
CREDIT SUISSE SECURITIES (USA) LLC
GREENWICH CAPITAL MARKETS, INC.
BNP PARIBAS SECURITIES CORP.
HIBERNIA SOUTH COAST CAPITAL, INC.
NATEXIS BLEICHROEDER, INC.
     As Initial Purchasers
c/o Banc of America Securities LLC
9 West 57^th Street
New York, New York 10019

Ladies and Gentlemen:

     Introductory. Brigham Exploration Company, a Delaware corporation (the “Company”), proposes to issue and sell to the several initial purchasers named in Schedule A (the “Initial Purchasers”), acting severally and not jointly, the respective amounts set forth in such Schedule A of $125,000,000 aggregate principal amount of the Company’s 9 ⁵/₈% Senior Notes due 2014 (the “Notes”). Banc of America Securities LLC, Credit Suisse Securities (USA) LLC, Greenwich Capital Markets, Inc., BNP Paribas Securities Corp., Hibernia South Coast Capital, Inc. and Natexis Bleichroeder, Inc. have agreed to act as the several Initial Purchasers in connection with the offering and sale of the Securities (as defined below).

     The Securities will be issued pursuant to an indenture, to be dated as of April 20, 2006 (the “Indenture”), among the Company, the Guarantors (as defined below), and Wells Fargo Bank, N.A., as trustee (the “Trustee”). Securities issued in book-entry form will be issued in the name of Cede & Co., as nominee of The Depository Trust Company (the “Depositary”) pursuant to a blanket issuer letter of representations, to be dated on or before the Closing Date (as defined in Section 2 hereof) (the “DTC Agreement”), among the Company and the Depositary.

     The holders of the Securities will be entitled to the benefits of a registration rights agreement, to be dated as of April 20, 2006 (the “Registration Rights Agreement”), among the Company, the Guarantors and the Initial Purchasers, pursuant to which the Company and the Guarantors will agree to file with the Commission (as defined below), under the circumstances set forth therein, (i) a registration statement under the Securities Act (as defined below) relating to another series of debt securities of the Company with terms substantially identical to the Notes (the “Exchange Notes”) to be offered in exchange for the Notes (the “Exchange Offer”) and (ii) to the extent required

by the Registration Rights Agreement, a shelf registration statement pursuant to Rule 415 of the Securities Act relating to the resale by certain holders of the Notes, and in each case, to use its best efforts to cause such registration statements to be declared effective.

     The payment of principal of, premium, if any, and interest on the Notes will be fully and unconditionally guaranteed on a senior unsecured basis, jointly and severally, by Brigham, Inc., a Nevada corporation, and Brigham Oil & Gas, L.P., a Delaware limited partnership, and any subsidiary of the Company that executes an additional guarantee after the Closing Date in accordance with the terms of the Indenture, and their respective successors and assigns (collectively, the “Guarantors”), pursuant to their guarantees (the “Guarantees”). The Notes and the Guarantees attached thereto are herein collectively referred to as the “Securities;” and the Exchange Notes and the Guarantees attached thereto are herein collectively referred to as the “Exchange Securities.”

     The Company understands that the Initial Purchasers propose to make an offering of the Securities on the terms and in the manner set forth herein and in the Pricing Disclosure Package (as defined below) and agrees that the Initial Purchasers may resell, subject to the conditions set forth herein, all or a portion of the Securities to purchasers (the “Subsequent Purchasers”) at any time after the time this Agreement is executed by the parties hereto (the “Time of Execution”). The Securities are to be offered and sold to or through the Initial Purchasers without being registered with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933 (as amended, the “Securities Act,” which term, as used herein, includes the rules and regulations of the Commission promulgated thereunder), in reliance upon exemptions therefrom. Pursuant to the terms of the Securities and the Indenture, investors who acquire Securities shall be deemed to have agreed that Securities may only be resold or otherwise transferred, after the date hereof, if such Securities are registered for sale under the Securities Act or if an exemption from the registration requirements of the Securities Act is available (including the exemptions afforded by Rule 144A under the Securities Act (“Rule 144A”) or Regulation S under the Securities Act (“Regulation S”)).

     The Company has prepared and delivered to each Initial Purchaser copies of a Preliminary Offering Memorandum, dated April 5, 2006 (the “Preliminary Offering Memorandum”), and has prepared and delivered to each Initial Purchaser copies of a Pricing Supplement, dated April 12, 2006 (the “Pricing Supplement”), describing the terms of the Securities, each for use by such Initial Purchaser in connection with its solicitation of offers to purchase the Securities. The Preliminary Offering Memorandum and the Pricing Supplement are herein referred to as the “Pricing Disclosure Package.” Promptly after the Time of Execution, the Company will prepare and deliver to each Initial Purchaser a final offering memorandum dated the date hereof (the “Final Offering Memorandum”).

     The Company hereby confirms its agreements with the Initial Purchasers as follows:

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          SECTION 1. Representations and Warranties. Each of the Company and the Guarantors, jointly and severally, hereby represents, warrants and covenants to each Initial Purchaser that, as of the date hereof and as of the Closing Date (references in this Section 1 to the “Offering Memorandum” are to (x) the Pricing Disclosure Package in the case of representations and warranties made as of the date hereof and (y) the Final Offering Memorandum in the case of representations and warranties made as of the Closing Date):

     (a) No Registration Required. Subject to compliance by the Initial Purchasers with the representations and warranties set forth in Section 2 hereof and with the procedures set forth in Section 7 hereof, it is not necessary in connection with the offer, sale and delivery of the Securities to the Initial Purchasers and to each Subsequent Purchaser in the manner contemplated by this Agreement and the Offering Memorandum to register the Securities under the Securities Act or, until such time as the Exchange Securities are issued pursuant to an effective registration statement, to qualify the Indenture under the Trust Indenture Act of 1939 (the “Trust Indenture Act,” which term, as used herein, includes the rules and regulations of the Commission promulgated thereunder).

     (b) No Integration of Offerings or General Solicitation. None of the Company, the Guarantors or any of their respective subsidiaries, or its affiliates (as such term is defined in Rule 501 under the Securities Act) (each, an “Affiliate”), or any person acting on its or any of their behalf (other than the Initial Purchasers, as to whom no representation or warranty is made) have, directly or indirectly, solicited any offer to buy or offered to sell, or will, directly or indirectly, solicit any offer to buy or offer to sell, in the United States or to any United States citizen or resident, any security which is or would be integrated with the sale of the Securities in a manner that would require the Securities to be registered under the Securities Act. None of the Company, the Guarantors, any of their subsidiaries or its Affiliates, or any person acting on its or any of their behalf (other than the Initial Purchasers, as to whom no representation or warranty is made) have engaged or will engage, in connection with the offering of the Securities, in any form of general solicitation or general advertising within the meaning of Rule 502 under the Securities Act. With respect to those Securities sold in reliance upon Regulation S, (i) none of the Company, the Guarantors, any of their subsidiaries or Affiliates or any person acting on its or any of their behalf (other than the Initial Purchasers, as to whom no representation or warranty is made) has engaged or will engage in any directed selling efforts within the meaning of Regulation S and (ii) each of the Company, the Guarantors, any of their subsidiaries or Affiliates and any person acting on its or their behalf (other than the Initial Purchasers, as to whom no representation or warranty is made) has complied and will comply with the offering restrictions set forth in Regulation S.

     (c) Eligibility for Resale under Rule 144A. The Securities are eligible for resale pursuant to Rule 144A and will not be, at the Closing Date, of the same class as securities listed on a national securities exchange registered under

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Section 6 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or quoted in a U.S. automated interdealer quotation system.

     (d) The Offering Memorandum. Neither the Pricing Disclosure Package, as of the Time of Execution, nor the Final Offering Memorandum, as of its date or (as amended or supplemented in accordance with Section 3(a), if applicable) as of the Closing Date, contains or represents an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided that this representation, warranty and agreement shall not apply to statements in or omissions from the Pricing Disclosure Package, the Final Offering Memorandum or any amendment or supplement thereto made in reliance upon and in conformity with information furnished to the Company in writing by any Initial Purchaser through Banc of America Securities LLC expressly for use in the Pricing Disclosure Package, the Final Offering Memorandum or amendment or supplement thereto, as the case may be. The Pricing Disclosure Package contains, and the Final Offering Memorandum will contain, as of its date, all the information specified in, and meeting the requirements of, Rule 144A. The Company has not distributed and will not distribute, prior to the later of the Closing Date and the completion of the Initial Purchasers’ distribution of the Securities, any offering material in connection with the offering and sale of the Securities other than the Pricing Disclosure Package and the Final Offering Memorandum.

     (e) The Purchase Agreement. This Agreement has been duly authorized, executed and delivered by, and is a valid and binding agreement of, the Company and each of the Guarantors, enforceable against the Company and each of the Guarantors in accordance with its terms, except as rights to indemnification hereunder may be limited by applicable law and except as the enforcement hereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles.

     (f) The Registration Rights Agreement. The Registration Rights Agreement has been duly authorized and, on the Closing Date, will have been duly executed and delivered by, and will constitute a valid and binding agreement of, the Company and the Guarantors, enforceable against the Company and each of the Guarantors in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles and except as rights to indemnification under the Registration Rights Agreement may be limited by applicable law.

     (g) The DTC Agreement. The DTC Agreement has been duly authorized and, on the Closing Date, will have been duly executed and delivered by, and (assuming the due authorization, execution and delivery thereof by the

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other parties thereto) will constitute a valid and binding agreement of, the Company, enforceable against the Company in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles.

     (h) Authorization of the Notes, the Exchange Notes and the Guarantees. (i) The Notes to be purchased by the Initial Purchasers from the Company are in the form contemplated by the Indenture, have been duly authorized for issuance and sale pursuant to this Agreement and the Indenture and, at the Closing Date, will have been duly executed by the Company and, when authenticated in the manner provided for in the Indenture and delivered against payment of the purchase price therefor, will constitute valid and binding agreements of the Company, enforceable against the Company in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles and will be entitled to the benefits of the Indenture. (ii) The Exchange Notes have been duly and validly authorized for issuance by the Company, and when issued and authenticated in accordance with the terms of the Indenture, the Registration Rights Agreement and the Exchange Offer, will constitute valid and binding obligations of the Company, enforceable against the Company in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium, or similar laws relating to or affecting enforcement of the rights and remedies of creditors or by general principles of equity and will be entitled to the benefits of the Indenture. (iii) The Guarantees of the Notes and the Exchange Notes are in the respective forms contemplated by the Indenture, have been duly authorized for issuance and sale pursuant to this Agreement and the Indenture and, at the Closing Date, will have been duly executed by each of the Guarantors and, when the Notes and the Exchange Notes have been authenticated in the manner provided for in the Indenture and delivered against payment of the purchase price therefor, will constitute valid and binding agreements of each such Guarantor, enforceable against it in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles and will be entitled to the benefits of the Indenture.

     (i) Authorization of the Indenture. The Indenture has been duly authorized by the Company and the Guarantors and, at the Closing Date, will have been duly executed and delivered by, and will constitute a valid and binding agreement of, the Company and the Guarantors, enforceable against the Company and each of the Guarantors in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles.

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     (j) Description of the Securities and the Indenture. The Securities, the Exchange Securities and the Indenture conform, or will conform, in all material respects to the respective statements relating thereto contained in the Offering Memorandum.

     (k) No Material Adverse Change. Except as otherwise disclosed in the Offering Memorandum, subsequent to the respective dates as of which information is given in the Offering Memorandum: (i) there has been no material adverse change, or any development that could reasonably be expected to result in a material adverse change, in the condition, financial or otherwise, or in the earnings, business, operations or prospects, whether or not arising from transactions in the ordinary course of business, of the Company, the Guarantors and their respective subsidiaries, considered as one entity (any such change or development is called a “Material Adverse Change”); (ii) the Company, the Guarantors and their respective subsidiaries, considered as one entity, have not incurred any material liability or obligation, indirect, direct or contingent, not in the ordinary course of business, nor entered into any material transaction or agreement not in the ordinary course of business and (iii) there has been no dividend or distribution of any kind declared, paid or made by the Company, the Guarantors or their respective subsidiaries, on any class of capital stock or other equity interest (other than cash dividends with respect to the Company’s Series A Preferred Stock, $0.01 par value, $20 stated and redemption value, maturing on October 31, 2010, as disclosed in the Offering Memorandum) or repurchase or redemption by the Company, the Guarantors or any of their respective subsidiaries of any class of capital stock or other equity interest.

     (l) Independent Accountants. PricewaterhouseCoopers LLP, which expressed its opinion with respect to the financial statements (which term as used in this Agreement includes the related notes thereto) of the Company and its subsidiaries filed with the Commission and included in the Offering Memorandum, are independent public or certified public accountants within the meaning of Regulation S-X under the Securities Act and the Exchange Act, and any non-audit services provided by PricewaterhouseCoopers LLP to the Company or any of the Guarantors have been approved by the Audit Committee of the Board of Directors of the Company.

     (m) Independent Petroleum Engineers. The written engineering reports prepared by Cawley, Gillespie & Associates, Inc. (“Cawley, Gillespie”), an oil and gas engineering consulting firm, as of December 31, 2005, setting forth the engineering values attributable to the oil and gas properties of the Company and its subsidiaries accurately reflect in all material respects the ownership interests of the Company and its subsidiaries in the properties therein as of December 31, 2005, except as otherwise disclosed in the Offering Memorandum. The information furnished by the Company to Cawley, Gillespie for purposes of preparing its report, including, without limitation, production, costs of operation and development, agreements relating to current and future operations and sales of

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production, was true, correct and complete in all material respects on the date supplied and was prepared in accordance with customary industry practices. Cawley, Gillespie, independent petroleum consultants, who prepared estimates of the extent and value of proved oil and natural gas reserves, are independent with respect to the Company and its subsidiaries.

     (n) Preparation of the Financial Statements. The financial statements, together with the related schedules and notes, included in the Offering Memorandum present fairly the consolidated financial position of the entities to which they relate as of and at the dates indicated and the results of their operations and cash flows for the periods specified. Such financial statements have been prepared in conformity with generally accepted accounting principles applied on a consistent basis throughout the periods involved, except as may be expressly stated in the related notes thereto. The financial statements and the financial information included in the Offering Memorandum comply as to form with the requirements applicable to registration statements on Form S-1 under the Securities Act. The financial data set forth in the Offering Memorandum under the captions “Offering Summary – Summary Financial Information” and “Selected Consolidated Financial Data” fairly present the information set forth therein on a basis consistent with that of the audited financial statements contained in the Offering Memorandum.

     (o) Incorporation and Good Standing of the Company and its Subsidiaries. Each of the Company and its subsidiaries has been duly incorporated or formed and is validly existing as a corporation, limited partnership or limited liability company, as the case may be, in good standing under the laws of the jurisdiction of its incorporation or formation and has corporate, partnership or company, as the case may be, power and authority to own, lease and operate its properties and to conduct its business as described in the Offering Memorandum and, in the case of the Company and the Guarantors, to enter into and perform its respective obligations under each of this Agreement, the Registration Rights Agreement, the DTC Agreement, the Securities, the Exchange Securities and the Indenture, as the case may be, to which it is a party. Each of the Company and each subsidiary is duly qualified as a foreign corporation, limited partnership or limited liability company, as the case may be, to transact business and is in good standing or equivalent status in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except for such jurisdictions where the failure to so qualify or to be in good standing would not, individually or in the aggregate, result in a Material Adverse Change. All of the issued and outstanding capital stock of each subsidiary has been duly authorized and validly issued, is fully paid and nonassessable and is owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance or claim (except as encumbered under the Company’s senior credit agreement in effect on the date hereof). The Company does not own or control, directly or indirectly, any

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corporation, association or other entity other than the subsidiaries listed in Exhibit B hereto.

     (p) Capitalization and Other Capital Stock Matters. At December 31, 2005, on an actual basis, and on an as adjusted basis, after giving pro forma effect to the issuance and sale of the Securities pursuant hereto, the Company would have an authorized and outstanding capitalization as set forth in the Offering Memorandum under the caption “Capitalization” (other than for subsequent issuances of capital stock, if any, pursuant to employee benefit plans described in the Offering Memorandum or upon exercise of outstanding options or warrants described in the Offering Memorandum). All of the outstanding shares of common stock of the Company (the “Common Stock”) have been duly authorized and validly issued, are fully paid and nonassessable and have been issued in compliance with federal and state securities laws. None of the outstanding shares of Common Stock were issued in violation of any preemptive rights, rights of first refusal or other similar rights to subscribe for or purchase securities of the Company. There are no authorized or outstanding options, warrants, preemptive rights, rights of first refusal or other rights to purchase, or equity or debt securities convertible into or exchangeable or exercisable for, any capital stock of the Company or any of its subsidiaries other than those accurately described in the Offering Memorandum. The description of the options or other rights granted and/or exercised under the Company’s stock option plans set forth in the Offering Memorandum accurately and fairly describes such options and rights.

     (q) NASDAQ Listing. The Common Stock is registered pursuant to Section 12(b) of the Exchange Act and is listed on The NASDAQ Stock Market (“NASDAQ”), and the Company has taken no action designed to, or likely to have the effect of, terminating the registration of the Common Stock under the Exchange Act or delisting the Common Stock from NASDAQ, nor has the Company received any notification that the Commission or the NASD, Inc. (the “NASD”) is contemplating terminating such registration or listing.

     (r) Non-Contravention of Existing Instruments; No Further Authorizations or Approvals Required. None of the Company, the Guarantors or any of their respective subsidiaries is in violation of its charter, regulations, by-laws, partnership agreement, limited liability company agreement or similar constitutive document or is in default (or, with the giving of notice or lapse of time, would be in default) (“Default”) under any indenture, mortgage, loan or credit agreement, note, contract, franchise, lease, license or other instrument to which the Company, any of the Guarantors or any of their respective subsidiaries is a party or by which it or any of them may be bound (including, without limitation, the Company’s existing senior credit agreement and the Company’s existing subordinated credit agreement) or to which any of the property or assets of the Company or any of the Guarantors or any of their respective subsidiaries is subject (each, an “Existing Instrument”), except for such Defaults as would not, individually or in the aggregate, result in a Material Adverse Change. The

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execution, delivery and performance of this Agreement, the Registration Rights Agreement, the DTC Agreement and the Indenture by the Company and each Guarantor party thereto, and the issuance and delivery of the Securities and the Exchange Securities, and consummation of the transactions contemplated hereby and thereby and by the Offering Memorandum (i) have been duly authorized by all necessary corporate, partnership or company, as the case may be, action and will not result in any violation of the provisions of the charter, regulations, by-laws, partnership agreement, operating agreement or other similar constitutive document of the Company, any Guarantor or any of their respective subsidiaries, (ii) will not conflict with or constitute a breach of, or Default or a Debt Repayment Triggering Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company, any Guarantor or any of their respective subsidiaries pursuant to, or require the consent of any other party to, any Existing Instrument, except for such conflicts, breaches, Defaults, liens, charges or encumbrances as would not, individually or in the aggregate, result in a Material Adverse Change and such consents as have been obtained and are in full force and effect, and (iii) will not result in any violation of any law, administrative regulation or administrative or court decree applicable to the Company, any Guarantor or any of their respective subsidiaries. No consent, approval, authorization or other order of, or registration or filing with, any court or other governmental or regulatory authority or agency, is required for the Company’s and the Guarantors’ execution, delivery and performance of this Agreement, the Registration Rights Agreement, the DTC Agreement or the Indenture, to which it is a party, or the issuance and delivery of the Securities or the Exchange Securities, or consummation of the transactions contemplated hereby and thereby and by the Offering Memorandum, except such as have been obtained or made by the Company or the Guarantors and are in full force and effect under the Securities Act, applicable securities laws of the several states of the United States or provinces of Canada and except such as may be required by the securities laws of the United States and the several states of the United States or provinces of Canada with respect to the Company’s obligations under the Registration Rights Agreement. As used herein, a “Debt Repayment Triggering Event” means any event or condition which gives, or with the giving of notice or lapse of time would give, the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company, the Guarantors or any of their respective subsidiaries.

     (s) No Material Actions or Proceedings. To the best of the Company’s or any Guarantor’s knowledge, there are no legal or governmental actions, suits, investigations or proceedings pending or threatened (i) against or affecting the Company, any Guarantor or any of their respective subsidiaries or (ii) which has as the subject thereof any property owned or leased by, the Company, the Guarantors or any of their respective subsidiaries, which (in any

9

such case under (i) or (ii) above) action, suit, investigation or proceeding, if determined adversely to the Company, such Guarantor or such subsidiary would result in a Material Adverse Change or adversely affect the consummation of the transactions contemplated by this Agreement.

     (t) Intellectual Property Rights. The Company, the Guarantors and their respective subsidiaries own, possess or license sufficient trademarks, trade names, patent rights, copyrights, licenses, approvals, trade secrets and other similar rights (collectively, “Intellectual Property Rights”) reasonably necessary to conduct their businesses as now conducted; and the expected expiration of any such Intellectual Property Rights, individually or in the aggregate, would not result in a Material Adverse Change. None of the Company, the Guarantors or any of their respective subsidiaries has received any notice of infringement or conflict with asserted Intellectual Property Rights of others, which infringement or conflict, if the subject of an unfavorable decision, ruling or filing would result in a Material Adverse Change. None of the Company, the Guarantors or any of their respective subsidiaries is in default under the terms of any license or similar agreement related to any Intellectual Property Rights necessary to conduct their business as now conducted or contemplated except as would not result in a Material Adverse Change.

     (u) All Necessary Permits, etc. Each of the Company, the Guarantors and their respective subsidiaries possess such valid and current certificates, franchises, grants, authorizations, qualifications, licenses, permits, easements, variances, exceptions, certifications, registrations, consents, certificates or approvals issued by the appropriate local, state, federal or foreign regulatory agencies or bodies necessary for it to own, lease and operate the assets and properties or to conduct their respective businesses, and none of the Company, the Guarantors or any of their respective subsidiaries has received any notice of proceedings relating to the revocation, cancellation or modification of, or non-compliance with, any such certificate, authorization or permit which, either individually or in the aggregate, if the subject of an unfavorable decision, ruling or finding, could result in a Material Adverse Change.

     (v) Title to Properties. The Company, the Guarantors and each of their respective subsidiaries have good and indefeasible title to (i) its oil and gas properties to the extent included or reflected in the reports of Cawley, Gillespie referenced in Section 1(m) above and (ii) all of the other properties and assets reflected as owned in the financial statements referred to in Section 1(n) hereof (or elsewhere in the Offering Memorandum), in each case (except as encumbered under the Company’s senior credit agreement in effect on the date hereof) free and clear of any security interests, mortgages, liens, encumbrances, equities, claims and other title defects, except such as do not materially and adversely affect the value of such property and do not materially interfere with the use made or proposed to be made of such property by the Company, such Guarantor or such subsidiary. The real property, improvements, equipment and personal property

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held under lease by the Company, any Guarantor or any subsidiary are held under valid and enforceable leases, with such exceptions as do not materially interfere with the use made or proposed to be made of such real property, improvements, equipment or personal property by the Company, such Guarantor or such subsidiary.

     (w) Tax Law Compliance. The Company, the Guarantors and their respective subsidiaries have filed all necessary federal, state and foreign income and franchise tax returns and have paid all taxes required to be paid by any of them and, if due and payable, any related or similar assessment, fine or penalty levied against any of them. The Company and each Guarantor have made, in all material respects, accurate charges, accruals and reserves in the applicable financial statements referred to in Section 1(n) hereof in respect of all federal, state and foreign income and franchise taxes for all periods as to which the tax liability of the Company, the Guarantors, or any of their respective subsidiaries has not been finally determined.

     (x) Not an Investment Company. The Company and the Guarantors have been advised of the rules and requirements under the Investment Company Act of 1940, as amended (the “Investment Company Act,” which term, as used herein, includes the rules and regulations of the Commission promulgated thereunder). The Company and the Guarantors and their respective subsidiaries are not, and after receipt of payment for the Securities will not be, an “investment company” within the meaning of Investment Company Act and will each conduct their business in a manner so that they will not become subject to the Investment Company Act.

     (y) Insurance. Each of the Company the Company and its subsidiaries are insured by recognized, financially sound institutions with policies in such amounts and with such deductibles and policy limits and covering such risks as are generally deemed adequate, appropriate and customary for their businesses including, but not limited to, policies covering professional liability, malpractice, product liability, employee and customer health, workers’ compensation, general liability, director and officer, business interruption, real and personal property owned or leased by the Company and its subsidiaries against theft, damage, destruction, acts of terrorism and vandalism and earthquakes. The Company believes it has adequate, sufficient and appropriate coverage under its policies to cover all of its known litigation and the Company has sufficient insurance against its litigation reserves therefor, so that it believes there is no need to take any additional reserve for any such litigation under generally accepted accounting principles. The Company has no reason to believe that it or any of its subsidiaries will not be able (i) to renew its existing insurance coverage as and when such policies expire or (ii) to obtain adequate and comparable coverage from similar institutions as may be necessary or appropriate to conduct its business as now conducted and at a cost that would not result in a Material Adverse Change. There are no claims by the Company or any of its subsidiaries under any current

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insurance policy as to which any insurance company or institution is denying, or will deny, liability or coverage or defending under a reservation of rights clause.

     (z) No Price Stabilization or Manipulation. None of the Company, the Guarantors or any of their respective Affiliates has taken or will take, directly or indirectly, any action designed to or that might be reasonably expected to cause or result in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

     (aa) Solvency. Each of the Company and the Guarantors is, and immediately after the Closing Date will be, Solvent. As used herein, the term “Solvent” means, with respect to any such person on a particular date, that on such date (i) the fair market value of the assets of such person is greater than the total amount of liabilities (including contingent liabilities) of such person, (ii) the present fair salable value of the assets of such person is greater than the amount that will be required to pay the probable liabilities of such person on its debts as they become absolute and matured, (iii) such person is able to realize upon its assets and pay its debts and other liabilities, including contingent obligations, as they mature and (iv) such person does not have unreasonably small capital.

     (bb) Compliance with Sarbanes-Oxley. The Company and its subsidiaries and their respective officers and directors are in compliance in all material respects with the applicable provisions of the Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act,” which term, as used herein, includes the rules and regulations of the Commission promulgated thereunder). The principal executive officer and the principal financial officer of the Company have made all certifications required by the Sarbanes-Oxley Act, and the statements contained in any such certification are complete and correct.

     (cc) MD&A. There are no transactions, arrangements or other relationships, including but not limited to off balance sheet transactions, which would be required to be included in the Offering Memorandum if the Offering Memorandum were a registration statement on Form S-1 by Item 303 of Regulation S-K under the Securities Act which are not so described or described as required.

     (dd) Company’s Accounting System. The Company and its subsidiaries maintain a system of accounting controls that is in compliance in all material respects with the Sarbanes-Oxley Act and is sufficient to provide reasonable assurances that: (i) transactions are executed in accordance with management’s general or specific authorization; (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles and to maintain accountability for assets; (iii) access to assets is permitted only in accordance with management’s general or specific authorization; and (iv) the recorded accountability for assets is compared with

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existing assets at reasonable intervals and appropriate action is taken with respect to any differences.

     (ee) Disclosure Controls and Procedures. The Company has established and maintains disclosure controls and procedures (as such term is defined in Rules 13a-15 and 15d-14 under the Exchange Act); such disclosure controls and procedures are designed to ensure that material information relating to the Company and its subsidiaries is made known to the chief executive officer and chief financial officer of the Company by others within the Company or any of its subsidiaries, and such disclosure controls and procedures are reasonably effective to perform the functions for which they were established subject to the limitations of any such control system; the Company’s auditors and the Audit Committee of the Board of Directors of the Company have been advised of: (i) any significant deficiencies or material weaknesses in the design or operation of internal controls which could adversely affect the Company’s ability to record, process, summarize, and report financial data; and (ii) any fraud, whether or not material, that involves management or other employees who have a role in the Company’s internal controls; and since the date of the most recent evaluation of such disclosure controls and procedures, there have been no significant changes in internal controls or in other factors that could significantly affect internal controls, including any corrective actions with regard to significant deficiencies and material weaknesses.

     (ff) Compliance with Environmental Laws. Except as would not, individually or in the aggregate, result in a Material Adverse Change: (i) the Company, the Guarantors and each of their respective subsidiaries have all permits, authorizations and approvals required under any Environmental Laws (as defined below) and are in compliance with their requirements, (ii) to the best of the Company’s and the Guarantors’ knowledge, none of the Company, the Guarantors or any of their respective subsidiaries is in violation of any federal, state, local or foreign law or regulation relating to pollution or protection of human health or the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to emissions, discharges, releases or threatened releases of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum and petroleum products (collectively, “Materials of Environmental Concern”), or otherwise relating to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Materials of Environmental Concern (collectively, “Environmental Laws”), which violation includes, without limitation, noncompliance with any permits or other governmental authorizations required for the operation of the business of the Company, the Guarantors or any of their respective subsidiaries under applicable Environmental Laws, or noncompliance with the terms and conditions thereof, nor have the Company, any Guarantor or any of their respective subsidiaries received any written communication, whether from a governmental authority, citizens group, employee or otherwise, that alleges that

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either the Company, any Guarantor or any of their respective subsidiaries is in violation of any Environmental Law; (iii) there is no claim, action or cause of action filed with a court or governmental authority, no investigation with respect to which the Company has received written notice, and no written notice by any person or entity alleging potential liability for investigatory costs, cleanup costs, governmental responses costs, natural resources damages, property damages, personal injuries, attorneys’ fees or penalties arising out of, based on or resulting from the presence, or release into the environment, of any Material of Environmental Concern at any location owned, leased or operated by the Company, any Guarantor or any of their respective subsidiaries, now or in the past (collectively, “Environmental Claims”), pending or, to the best of the Company’s and the Guarantors’ knowledge, threatened against the Company, any Guarantor or any of their respective subsidiaries or any person or entity whose liability for any Environmental Claim the Company, any Guarantor or any of their respective subsidiaries has retained or assumed either contractually or by operation of law; and (iv) to the best of the Company’s and the Guarantors’ knowledge, there are no past or present actions, activities, circumstances, conditions, events or incidents, including, without limitation, the release, emission, discharge, presence or disposal of any Material of Environmental Concern, that could result in a violation of any Environmental Law or form the basis of a potential Environmental Claim against the Company, any Guarantor or any of their respective subsidiaries or against any person or entity whose liability for any Environmental Claim the Company, any Guarantor or any of their respective subsidiaries has retained or assumed either contractually or by operation of law. Neither the Company nor any of its subsidiaries has been named as a “potentially responsible party” under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as amended.

     (gg) Periodic Review of Costs of Environmental Compliance. In the ordinary course of its business, the Company conducts a periodic review of the effect of Environmental Laws on the business, operations and properties of the Company and its subsidiaries, in the course of which it identifies and evaluates associated costs and liabilities (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties). On the basis of such review and the amount of its established reserves, the Company has reasonably concluded that such associated costs and liabilities would not, individually or in the aggregate, result in a Material Adverse Change.

     (hh) ERISA Compliance. The Company and its subsidiaries and any “employee benefit plan,” as defined under the Employee Retirement Income Security Act of 1974 (as amended, “ERISA,” which term, as used herein, includes the regulations and published interpretations thereunder), established or maintained by the Company, its subsidiaries or their “ERISA Affiliates” (as defined below) are in compliance in all material respects with the applicable

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provisions of ERISA, or if not in material compliance such noncompliance would not result in a Material Adverse Change. “ERISA Affiliate” means, with respect to the Company or a subsidiary, any member of any group of organizations described in Section 414 of the Internal Revenue Code of 1986 (as amended, the “Code,” which term, as used herein, includes the regulations and published interpretations thereunder) of which the Company or such subsidiary is a member. No “reportable event” (as defined under ERISA) for which notice requirements have not been waived has occurred or is reasonably expected to occur with respect to any “employee benefit plan” established or maintained by the Company, its subsidiaries or any of their ERISA Affiliates and which is covered by Title IV of ERISA, except for such reportable events which would not, individually or in the aggregate, result in a Material Adverse Change. No “employee benefit plan” established or maintained by the Company, its subsidiaries or any of their ERISA Affiliates, if such “employee benefit plan” were terminated as of the most recent annual valuation date for such plan, would have any “amount of unfunded benefit liabilities” (as defined under ERISA) that would result in a Material Adverse Change. Neither the Company, its subsidiaries nor any of their ERISA Affiliates has incurred or reasonably expects to incur any liability under (i) Title IV of ERISA with respect to termination of, or withdrawal from, any “employee benefit plan” or (ii) Sections 412, 4971, 4975 or 4980B of the Code. Each “employee benefit plan” established or maintained by the Company, its subsidiaries or any of their ERISA Affiliates that is intended to be qualified under Section 401 of the Code is so qualified and nothing has occurred, whether by action or failure to act, which would cause the loss of such qualification. For the purposes of this section (hh), “subsidiaries” means those companies listed on Exhibit B hereto.

     (ii) Compliance with Labor Laws. Except as would not, individually or in the aggregate, result in a Material Adverse Change, (i) to the best of the Company’s and the Guarantors’ knowledge, there is (A) no unfair labor practice complaint pending or threatened against the Company, the Guarantors or any of their respective subsidiaries before the National Labor Relations Board or any state or local labor relations board, and no grievance or arbitration proceeding arising out of or under collective bargaining agreements pending or threatened, against the Company, the Guarantors or any of their respective subsidiaries, (B) no strike, labor dispute, slowdown or stoppage pending or threatened against the Company, the Guarantors or any of their respective subsidiaries and (C) no union representation question existing with respect to the employees of the Company, the Guarantors or any of their respective subsidiaries and no union organizing activities taking place, (ii) there has been no violation of any federal, state or local law relating to discrimination in hiring, promotion or pay of employees or of any applicable wage or hour laws, and (iii) none of the Company or its subsidiaries is aware of any existing, threatened or imminent labor disturbance by the employees of any of its principal customers, suppliers or contractors.

     (jj) Related Party Transactions. No relationship, direct or indirect, exists between or among any of the Company, the Guarantors or any of their

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respective Affiliates, on the one hand, and any former or current director, officer, manager, member, stockholder, customer or supplier of any of them, on the other hand, which is required by the Securities Act to be disclosed in a registration statement on Form S-1 which is not so disclosed in the Offering Memorandum. There are no outstanding loans, advances (except advances for business expenses in the ordinary course of business) or guarantees of indebtedness by the Company, the Guarantors or any of their respective Affiliates to or for the benefit of any of the officers or directors of the Company, the Guarantors or any of their respective Affiliates or any of their respective family members.

     (kk) No Unlawful Contributions or Other Payments. Except as would not, individually or in the aggregate, result in a Material Adverse Change, neither the Company, the Guarantors or any of their respective subsidiaries nor, to the best of the Company’s and the Guarantors’ knowledge, any director, officer, employee or agent of the Company, any Guarantor or any of their respective subsidiaries, has, directly or indirectly (i) made any contribution or other payment to any official of, or candidate for, any federal, state or foreign office in violation of any law of the character necessary to be disclosed in the Offering Memorandum in order to make the statements therein not misleading, (ii) used any corporate funds for unlawful contributions, gifts, entertainment or other unlawful expenses relating to political activity; (iii) violated any provision of the Foreign Corrupt Practices Act of 1977, as amended; or (iv) made any other unlawful payment.

     (ll) Compliance with Regulation S. The Company, the Guarantors their respective affiliates and all persons acting on their behalf (other than the Initial Purchasers, as to whom the Company and the Guarantors make no representation) have complied with and will comply with the offering restrictions requirements of Regulation S in connection with the offering of the Securities outside the United States and, in connection therewith, the Offering Memorandum will contain the disclosure required by Rule 902. The Company is a “reporting issuer,” as defined in Rule 902 under the Securities Act.

     (mm) Taxes; Fees. There are no stamp or other issuance or transfer taxes or duties or other similar fees or charges required to be paid by the Company or the Guarantors in connection with the execution and delivery of this Agreement or the issuance or sale by the Company and the Guarantors of the Securities or the Exchange Securities.

          Any certificate signed by an officer of the Company, any Guarantor or any of their respective subsidiaries and delivered to the Initial Purchasers or to counsel for the Initial Purchasers on the Closing Date shall be deemed to be a representation and warranty by the Company, such Guarantor or such subsidiary to each Initial Purchaser as to the matters set forth therein.

     SECTION 2. Purchase, Sale and Delivery of the Securities.

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     (a) The Securities. Each of the Company and the Guarantors agrees to issue and sell to the Initial Purchasers, severally and not jointly, all of the Securities, and the Initial Purchasers agree, severally and not jointly, to purchase from the Company and the Guarantors the aggregate principal amount of Securities set forth opposite their names on Schedule A, at a purchase price of 97.004% of the principal amount thereof payable on the Closing Date, in each case, on the basis of the representations, warranties and agreements herein contained, and upon the terms, subject to the conditions thereto, herein set forth.

     (b) The Closing Date. Delivery of certificates for the Securities in definitive form to be purchased by the Initial Purchasers and payment therefor shall be made at the offices of Fried, Frank, Harris, Shriver & Jacobson LLP, One New York Plaza, New York, New York 10004 (or such other place as may be agreed to by the Company and Banc of America Securities LLC) at 9:00 a.m. New York City time, on April 20, 2006 or such other time and date as Banc of America Securities LLC shall designate by notice to the Company (the time and date of such closing are called the “Closing Date”). The Company hereby acknowledges that circumstances under which Banc of America Securities LLC may provide notice to postpone the Closing Date as originally scheduled include, but are in no way limited to, any determination by the Company or the Initial Purchasers to recirculate to investors copies of an amended or supplemented Offering Memorandum or a delay as contemplated by the provisions of Section 16 hereof.

     (c) Delivery of the Securities. The Company shall deliver, or cause to be delivered, to Banc of America Securities LLC for the accounts of the several Initial Purchasers certificates for the Notes and the Guarantees at the Closing Date against the irrevocable release of a wire transfer of immediately available funds for the amount of the purchase price therefor to an account or accounts specified by the Company. The certificates for the Notes shall be in such denominations and registered in the name of Cede & Co., as nominee of the Depositary, pursuant to the DTC Agreement, and shall be made available for inspection on the business day preceding the Closing Date at a location in New York City, as Banc of America Securities LLC may designate. Time shall be of the essence, and delivery at the time and place specified in this Agreement is a further condition to the obligations of the Initial Purchasers.

     (d) Initial Purchasers as Qualified Institutional Buyers. Each Initial Purchaser severally and not jointly represents and warrants to, and agrees with, the Company that it is a “qualified institutional buyer” within the meaning of Rule 144A (a “Qualified Institutional Buyer”).

          SECTION 3. Additional Covenants. The Company and the Guarantors, jointly and severally, further covenant and agree with each Initial Purchaser as follows:

     (a) Preparation of Final Offering Memorandum; Initial Purchasers’ Review of Proposed Amendments and Supplements. As promptly as practicable

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following the Time of Execution and in any event not later than the second business day following the date hereof, the Company will prepare and deliver to the Initial Purchasers the Final Offering Memorandum, which shall consist of the Preliminary Offering Memorandum as modified only by the information contained in the Pricing Supplement. The Company will not amend or supplement the Preliminary Offering Memorandum or the Pricing Supplement. The Company will not amend or supplement the Final Offering Memorandum prior to the Closing Date unless the Initial Purchasers shall previously have been furnished a copy of the proposed amendment or supplement at least two business days prior to the proposed use or filing, and shall not have objected to such amendment or supplement.

     (b) Amendments and Supplements to the Final Offering Memorandum and Other Securities Act Matters. If, prior to the later of (x) the Closing Date and (y) the completion of the placement of the Securities by the Initial Purchasers with the Subsequent Purchasers, any event shall occur or condition exist as a result of which it is necessary to amend or supplement the Final Offering Memorandum, as then amended or supplemented, in order to make the statements therein, in the light of the circumstances when the Final Offering Memorandum is delivered to a Subsequent Purchaser, not misleading, or if in the judgment of the Initial Purchasers or counsel for the Initial Purchasers it is otherwise necessary to amend or supplement the Final Offering Memorandum to comply with law, the Company agrees to promptly prepare (subject to Section 3 hereof), and furnish at its own expense to the Initial Purchasers, amendments or supplements to the Final Offering Memorandum so that the statements in the Final Offering Memorandum as so amended or supplemented will not, in the light of the circumstances at the Closing Date and at the time of sale of Securities, be misleading or so that the Final Offering Memorandum, as amended or supplemented, will comply with all applicable law.

     Following the consummation of the Exchange Offer or the effectiveness of an applicable shelf registration statement and for so long as the Securities are outstanding if, in the judgment of the Initial Purchasers, the Initial Purchasers or any of their affiliates (as such term is defined in the Securities Act) are required to deliver a prospectus in connection with sales of, or market-making activities with respect to, the Securities, to periodically amend the applicable registration statement so that the information contained therein complies with the requirements of Section 10 of the Securities Act, to amend the applicable registration statement or supplement the related prospectus or the documents incorporated therein when necessary to reflect any material changes in the information provided therein so that the registration statement and the prospectus will not contain any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances existing as of the date the prospectus is so delivered, not misleading and to provide the Initial Purchasers with copies of each amendment or supplement filed and such other documents as the Initial Purchasers may reasonably request.

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     The Company and the Guarantors hereby expressly acknowledge that the indemnification and contribution provisions of Sections 8 and 9 hereof are specifically applicable and relate to each offering memorandum, registration statement, prospectus, amendment or supplement referred to in this Section 3.

     (c) Copies of the Offering Memorandum. The Company agrees to furnish the Initial Purchasers, without charge, as many copies of the Pricing Disclosure Package and the Final Offering Memorandum and any amendments and supplements thereto as they shall have reasonably requested.

     (d) Blue Sky Compliance. Each of the Company and the Guarantors shall cooperate with the Initial Purchasers and counsel for the Initial Purchasers to qualify or register (or to obtain exemptions from qualifying or registering) all or any part of the Securities for offer and sale under the securities laws of the several states of the United States, the provinces of Canada or any other jurisdictions designated by the Initial Purchasers, shall comply with such laws and shall continue such qualifications, registrations and exemptions in effect so long as required for the distribution of the Securities. None of the Company or any of the Guarantors shall be required to qualify as a foreign corporation or to take any action that would subject it to general service of process in any such jurisdiction where it is not presently qualified or where it would be subject to taxation as a foreign corporation. The Company will advise the Initial Purchasers promptly of the suspension of the qualification or registration of (or any such exemption relating to) the Securities for offering, sale or trading in any jurisdiction or any initiation or threat of any proceeding for any such purpose, and in the event of the issuance of any order suspending such qualification, registration or exemption, each of the Company and the Guarantors shall use its reasonable best efforts to obtain the withdrawal thereof at the earliest possible moment.

     (e) Use of Proceeds. The Company shall apply the net proceeds from the sale of the Securities sold by it in the manner described under the caption “Use of Proceeds” in the Pricing Disclosure Package.

     (f) The Depositary. The Company will cooperate with the Initial Purchasers and use its best efforts to permit the Securities to be eligible for clearance and settlement through the facilities of the Depositary.

     (g) Additional Issuer Information. Prior to the completion of the placement of the Securities by the Initial Purchasers with the Subsequent Purchasers, the Company shall file, on a timely basis, with the Commission and NASDAQ all reports and documents required to be filed under Section 13 or 15 of the Exchange Act. Additionally, at any time when the Company is not subject to Section 13 or 15 of the Exchange Act, for the benefit of holders and beneficial owners from time to time of the Securities, the Company shall furnish, at its

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expense, upon request, to holders and beneficial owners of Securities and prospective purchasers of Securities information (“Additional Issuer Information”) satisfying the requirements of Rule 144A(d).

     (h) Agreement Not To Offer or Sell Additional Securities. During the period of 180 days following the date hereof, the Company and each of the Guarantors will not, without the prior written consent of Banc of America Securities LLC (which consent may be withheld at the sole discretion of Banc of America Securities LLC), directly or indirectly, sell, offer, contract or grant any option to sell, pledge, transfer or establish an open “put equivalent position” within the meaning of Rule 16a-1 under the Exchange Act, or otherwise dispose of or transfer, or announce the offering of, or file any registration statement under the Securities Act in respect of, any debt securities of the Company or any of the Guarantors or securities exchangeable for or convertible into debt securities of the Company or any of the Guarantors (other than as contemplated by this Agreement and to register the Exchange Securities).

     (i) Future Reports to the Initial Purchasers. At any time when the Company is not subject to Section 13 or 15 of the Exchange Act and any Securities or Exchange Securities remain outstanding, the Company will furnish to Banc of America Securities LLC: (i) as soon as practicable after the end of each fiscal year, copies of the Annual Report of the Company containing the balance sheet of the Company as of the close of such fiscal year and statements of income, stockholders’ equity and cash flows for the year then ended and the opinion thereon of the Company’s independent public or certified public accountants; (ii) as soon as practicable after the filing thereof, copies of each proxy statement, Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other report filed by the Company with the Commission, the NASD or any securities exchange; and (iii) as soon as available, copies of any report or communication of the Company mailed generally to holders of its capital stock or debt securities (including the holders of the Securities), if, in each case, such documents are not filed with the Commission within the time periods specified by the Commission’s rules and regulations under Section 13 or 15 of the Exchange Act.

     (j) No Integration. The Company agrees that it will not, and will cause its Affiliates and subsidiaries not to, make any offer or sale of securities of the Company of any class if, as a result of the doctrine of “integration” referred to in Rule 502 under the Securities Act, such offer or sale would render invalid (for the purpose of (i) the sale of the Securities by the Company to the Initial Purchasers, (ii) the resale of the Securities by the Initial Purchasers to Subsequent Purchasers or (iii) the resale of the Securities by such Subsequent Purchasers to others) the exemption from the registration requirements of the Securities Act regarding the Securities provided by Section 4(2) thereof or by Rule 144A or by Regulation S thereunder or otherwise.

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     (k) No Restricted Resales. During the period of two years after the Closing Date, the Company will not, and will not permit any of its affiliates (as defined in Rule 144 under the Securities Act) to resell any of the Notes which constitute “restricted securities” under Rule 144 that have been reacquired by any of them.

     (l) Legended Securities. Each certificate for a Note will bear the legend contained in “Notice to Investors” in the Preliminary Offering Memorandum for the time period and upon the other terms stated in the Preliminary Offering Memorandum.

     (m) PORTAL. The Company will use its reasonable best efforts to cause such Notes to be eligible for the PORTAL Market.

          Banc of America Securities LLC, on behalf of the several Initial Purchasers, may, in its sole discretion, waive in writing the performance by the Company or any Guarantor of any one or more of the foregoing covenants or extend the time for their performance.

          SECTION 4. Payment of Expenses. Each of the Company and the Guarantors agrees to pay all costs, fees and expenses incurred in connection with the performance of its obligations hereunder and in connection with the transactions contemplated hereby, including, without limitation, (i) all expenses incident to the issuance and delivery of the Securities (including all printing and engraving costs), (ii) all necessary issue, transfer and other stamp taxes in connection with the issuance and sale of the Securities to the Initial Purchasers, (iii) all fees and expenses of the Company’s and the Guarantors’ counsel, independent public or certified public accountants and other advisors, (iv) all costs and expenses incurred in connection with the preparation, printing, filing, shipping and distribution of the Pricing Disclosure Package and the Final Offering Memorandum (including financial statements and exhibits), and all amendments and supplements thereto, this Agreement, the Registration Rights Agreement, the Indenture, the DTC Agreement and the Notes and Guarantees, (v) all filing fees, attorneys’ fees and expenses incurred by the Company, the Guarantors or the Initial Purchasers in connection with qualifying or registering (or obtaining exemptions from the qualification or registration of) all or any part of the Securities for offer and sale under the securities laws of the several states of the United States, the provinces of Canada or other jurisdictions designated by the Initial Purchasers (including, without limitation, the cost of preparing, printing and mailing preliminary and final blue sky or legal investment memoranda and any related supplements to the Pricing Disclosure Package or the Final Offering Memorandum), (vi) the fees and expenses of the Trustee, including the reasonable fees and disbursements of counsel for the Trustee in connection with the Indenture, the Securities and the Exchange Securities, (vii) any fees payable in connection with the rating of the Securities or the Exchange Securities with the ratings agencies and the listing of the Securities with the PORTAL Market, (viii) any filing fees incident to, and any reasonable fees and disbursements of counsel to the Initial Purchasers in connection with the review by the NASD, if any, of the terms of the sale of the Securities or the

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Exchange Securities, (ix) all fees and expenses (including reasonable fees and expenses of counsel) of the Company and the Guarantors in connection with approval of the Securities by the Depositary for “book-entry” transfer, and the performance by the Company and the Guarantors of their respective other obligations under this Agreement, and (x) all of the Company’s expenses incident to the “road show” for the offering of the Securities, including one-half of the cost of any chartered airplane or other transportation. Except as provided in this Section 4 and Sections 6, 8 and 9 hereof, the Initial Purchasers shall pay their own expenses, including the fees and disbursements of their counsel.

          SECTION 5. Conditions of the Obligations of the Initial Purchasers. The obligations of the several Initial Purchasers to purchase and pay for the Securities as provided herein on the Closing Date shall be subject to the accuracy of the representations and warranties on the part of the Company and the Guarantors set forth in Section 1 hereof as of the date hereof and as of the Closing Date as though then made and to the timely performance by the Company and the Guarantors of their covenants and other obligations hereunder, and to each of the following additional conditions:

     (a) Accountants’ Comfort Letter. On the date hereof, the Initial Purchasers shall have received from PricewaterhouseCoopers LLP, independent public or certified public accountants for the Company, a “comfort letter” dated the date hereof addressed to the Initial Purchasers, in form and substance satisfactory to the Initial Purchasers, covering the financial information in the Preliminary Offering Memorandum and the Pricing Supplement and other customary matters. In addition, on the Closing Date, the Initial Purchasers shall have received from such accountants, a “bring-down comfort letter” dated the Closing Date addressed to the Initial Purchasers, in form and substance satisfactory to the Initial Purchasers, in the form of the “comfort letter” delivered on the date hereof, except that (i) it shall cover the financial information in the Final Offering Memorandum and any amendment or supplement thereto and (ii) procedures shall be brought down to a date no more than three business days prior to the Closing Date.

     (b) No Material Adverse Change or Ratings Agency Change. For the period from and after the date of this Agreement and prior to the Closing Date:

     (i) in the reasonable judgment of the Initial Purchasers there shall not have occurred any Material Adverse Change; and

     (ii) there shall not have occurred any downgrading, nor shall any notice have been given of any intended or potential downgrading or of any review for a possible change that does not indicate the direction of the possible change, in the rating accorded any securities or indebtedness of the Company, any Guarantor or any of their respective subsidiaries by any “nationally recognized statistical rating organization” as such term is defined for purposes of Rule 436 under the Securities Act.

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     (c) Opinion of Counsel for the Company. On the Closing Date the Initial Purchasers shall have received the favorable opinion of Thompson & Knight LLP, counsel for the Company, dated as of such Closing Date, the form of which is attached as Exhibit A.

     (d) Opinion of Counsel for the Initial Purchasers. On the Closing Date the Initial Purchasers shall have received the favorable opinion of Fried, Frank, Harris, Shriver & Jacobson LLP, counsel for the Initial Purchasers, dated as of such Closing Date, with respect to such matters as may be reasonably requested by the Initial Purchasers.

     (e) Officers’ Certificate. On the Closing Date the Initial Purchasers shall have received a written certificate executed by the Chairman of the Board, Chief Executive Officer or President of the Company and each Guarantor and the Chief Financial Officer or Chief Accounting Officer of the Company and each Guarantor, dated as of the Closing Date, to the effect set forth in Section 5(b)(ii) hereof, and further to the effect that:

     (i) for the period from and after the date of this Agreement and prior to the Closing Date there has not occurred, to the best of their knowledge, any Material Adverse Change;

     (ii) the representations, warranties and covenants of the Company and the Guarantors set forth in Section 1 hereof were true and correct as of the Time of Execution and are true and correct as of the Closing Date with the same force and effect as though expressly made on and as of the Closing Date; and

     (iii) the Company and the Guarantors have complied with all the agreements and satisfied all the conditions on their part to be performed or satisfied at or prior to the Closing Date.

     (f) Engineers Letter. On the date hereof, the Initial Purchasers shall have received from Cawley, Gillespie, a letter dated the date hereof addressed to the Initial Purchasers, in form and substance satisfactory to the Initial Purchasers, containing the conclusions and findings of such firm with respect to the oil and gas properties of the Company and its subsidiaries. In addition, on the Closing Date, the Initial Purchasers shall have received from Cawley, Gillespie, a letter dated the Closing Date addressed to the Initial Purchasers (which may refer to the letter previously delivered to the Initial Purchasers), in form and substance satisfactory to the Initial Purchasers, containing the conclusions and findings of such firm with respect to the oil and gas properties of the Company and its subsidiaries.

     (g) PORTAL Listing. At the Closing Date the Notes shall have been designated for trading on the PORTAL Market.

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     (h) Registration Rights Agreement and Indenture.The Company and the Guarantors shall have entered into the Registration Rights Agreement and the Indenture, the Trustee shall have entered into the Indenture and the Initial Purchasers shall have received executed counterparts thereof.

     (i) Additional Documents. On or before the Closing Date, the Initial Purchasers and counsel for the Initial Purchasers shall have received such information, documents and opinions as they may reasonably require for the purposes of enabling them to pass upon the issuance and sale of the Securities as contemplated herein, or in order to evidence the accuracy of any of the representations and warranties, or the satisfaction of any of the conditions or agreements, herein contained.

          If any condition specified in this Section 5 is not satisfied when and as required to be satisfied, this Agreement may be terminated by the Initial Purchasers by notice to the Company at any time on or prior to the Closing Date, which termination shall be without liability on the part of any party to any other party, except that Sections 4, 6, 8 and 9 hereof shall at all times be effective and shall survive such termination.

          SECTION 6. Reimbursement of Initial Purchasers’ Expenses. If this Agreement is terminated by the Initial Purchasers pursuant to Section 5 or 10 hereof, including if the sale to the Initial Purchasers of the Securities on the Closing Date is not consummated because of any refusal, inability or failure on the part of the Company to perform any agreement herein or to comply with any provision hereof (other than as a result of a breach by this Agreement by the Initial Purchasers), the Company agrees to reimburse the Initial Purchasers (or such Initial Purchasers as have terminated this Agreement with respect to themselves), severally, upon demand for all out-of-pocket costs and expenses that shall have been reasonably incurred by the Initial Purchasers in connection with the proposed purchase and the offering and sale of the Securities, including, without limitation, fees and disbursements of counsel, printing expenses, travel expenses, expenses associated with the road show for the marketing of the Securities, postage, facsimile and telephone charges.

          SECTION 7. Offer, Sale and Resale Procedures. Each of the Initial Purchasers, on the one hand, and the Company and the Guarantors, on the other hand, hereby agree to observe the following procedures in connection with the offer and sale of the Securities:

          (A) Offers and sales of the Securities will be made only by the Initial Purchasers or Affiliates thereof qualified to do so in the jurisdictions in which such offers or sales are made. Each such offer or sale shall only be made to persons whom the offeror or seller reasonably believes to be Qualified Institutional Buyers or non-U.S. persons outside the United States to whom the offeror or seller reasonably believes offers and sales of the Securities may be made in reliance upon Regulation S, upon the terms and conditions set forth in Annex I hereto, which Annex I is hereby expressly made a part hereof.

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          (B) The Securities will be offered by approaching prospective Subsequent Purchasers on an individual basis. No general solicitation or general advertising (within the meaning of Rule 502 under the Securities Act) will be used in the United States in connection with the offering of the Securities.

          (C) Upon original issuance by the Company, and until such time as the same is no longer required under the applicable requirements of the Securities Act, the Notes (and all securities issued in exchange therefor or in substitution thereof, other than the Exchange Notes) shall bear the following legend:

“THIS NOTE AND THE GUARANTEES ENDORSED HEREON HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY STATE SECURITIES LAWS. NEITHER THIS NOTE, THE GUARANTEES ENDORSED HEREON, NOR ANY INTEREST OR PARTICIPATION HEREIN MAY BE OFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED, ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO THE REGISTRATION REQUIREMENTS OF, THE SECURITIES ACT. THE HOLDER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON, BY ITS ACCEPTANCE HEREOF, AGREES NOT TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY, PRIOR TO THE DATE WHICH IS TWO YEARS AFTER THE LATER OF THE ORIGINAL ISSUE DATE HEREOF AND THE LAST DATE ON WHICH THE COMPANY OR ANY AFFILIATE OF THE COMPANY WAS THE OWNER OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON (OR ANY PREDECESSOR OF THIS NOTE AND THE GUARANTEES ENDORSED HEREON) (THE “RESALE RESTRICTION TERMINATION DATE”), EXCEPT THAT THE NOTES AND GUARANTEES MAY BE TRANSFERRED (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT, (C) FOR SO LONG AS THE NOTES AND THE GUARANTEES ENDORSED THEREON ARE ELIGIBLE FOR RESALE PURSUANT TO RULE 144A UNDER THE SECURITIES ACT (“RULE 144A”), TO A PERSON IT REASONABLY BELIEVES IS A “QUALIFIED INSTITUTIONAL BUYER” AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (D) PURSUANT TO OFFERS AND SALES TO NON-U.S. PERSONS THAT OCCUR OUTSIDE THE UNITED STATES WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT, OR (E) PURSUANT TO ANOTHER

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AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE COMPANY’S AND THE TRUSTEE’S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER (1) PURSUANT TO CLAUSE (D) PRIOR TO THE END OF THE 40-DAY DISTRIBUTION COMPLIANCE PERIOD WITHIN THE MEANING OF REGULATION S UNDER THE SECURITIES ACT OR PURSUANT TO CLAUSE (E) PRIOR TO THE RESALE RESTRICTION TERMINATION DATE TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION AND/OR OTHER INFORMATION SATISFACTORY TO EACH OF THEM, AND (2) IN EACH OF THE FOREGOING CASES, TO REQUIRE THAT A CERTIFICATE OF TRANSFER IN THE FORM APPEARING ON THIS NOTE IS COMPLETED AND DELIVERED BY THE TRANSFEROR TO THE TRUSTEE. THIS LEGEND WILL BE REMOVED UPON THE REQUEST OF A HOLDER AFTER THE RESALE RESTRICTION TERMINATION DATE.”

     Following the sale of the Securities by the Initial Purchasers to Subsequent Purchasers pursuant to the terms hereof, the Initial Purchasers shall not be liable or responsible to the Company or any Guarantor for any losses, damages or liabilities suffered or incurred by the Company or any Guarantor, including any losses, damages or liabilities under the Securities Act, arising from or relating to any resale or transfer of any Security by a Subsequent Purchaser or a subsequent transferee.

          SECTION 8. Indemnification.

     (a) Indemnification of the Initial Purchasers. Each of the Company and the Guarantors, jointly and severally, agrees to indemnify and hold harmless each Initial Purchaser, its directors, officers and employees, and each person, if any, who controls any Initial Purchaser within the meaning of the Securities Act and the Exchange Act against any loss, claim, damage, liability or expense, as incurred, to which such Initial Purchaser, director, officer, employee or controlling person may become subject, under the Securities Act, the Exchange Act or other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of the Company and/or any Guarantor sought to be bound), insofar as such loss, claim, damage, liability or expense (or actions in respect thereof as contemplated below) arises out of or is based: (i) upon any untrue statement or alleged untrue statement of a material fact contained in the Pricing Disclosure Package or the Final Offering Memorandum (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; or (ii) any act or failure to act or any alleged act or failure to act by any Initial Purchaser in connection with, or relating in any manner to, the offering contemplated hereby,

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and which is included as part of or referred to in any loss, claim, damage, liability or action arising out of or based upon any matter covered by clause (i) above, provided that the Company and the Guarantors shall not be liable under this clause (ii) to the extent that a court of competent jurisdiction shall have determined by a final judgment that such loss, claim, damage, liability or action resulted directly from any such acts or failures to act undertaken or omitted to be taken by such Initial Purchaser through its gross negligence or willful misconduct; and to reimburse each Initial Purchaser and each such director, officer, employee or controlling person for any and all expenses (including the reasonable fees and disbursements of counsel chosen by Banc of America Securities LLC) as such expenses are reasonably incurred by such Initial Purchaser or such director, officer, employee or controlling person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action; provided, however, that the foregoing indemnity agreement shall not apply to any loss, claim, damage, liability or expense to the extent, but only to the extent, arising out of or based upon any untrue statement or alleged untrue statement or omission or alleged omission made in reliance upon and in conformity with written information furnished to the Company by the Initial Purchasers expressly for use in the Pricing Disclosure Package or the Final Offering Memorandum (or any amendment or supplement thereto). The indemnity agreement set forth in this Section 8(a) shall be in addition to any liabilities that the Company and the Guarantors may otherwise have.

     (b) Indemnification of the Company and the Guarantors. Each Initial Purchaser agrees, severally and not jointly, to indemnify and hold harmless the Company, each Guarantor, each of their respective directors, officers and employees and each person, if any, who controls the Company or any Guarantor within the meaning of the Securities Act or the Exchange Act, against any loss, claim, damage, liability or expense, as incurred, to which the Company, any Guarantor or any such director, officer or employee or controlling person may become subject, under the Securities Act, the Exchange Act, or other federal or state statutory law or regulation, or at common law or otherwise (including in settlement of any litigation, if such settlement is effected with the written consent of such Initial Purchaser), insofar as such loss, claim, damage, liability or expense (or actions in respect thereof as contemplated below) arises out of or is based upon any untrue statement or alleged untrue statement of a material fact contained in the Pricing Disclosure Package or the Final Offering Memorandum (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Pricing Disclosure Package or the Final Offering Memorandum (or any amendment or supplement thereto), in reliance upon and in conformity with written information furnished to the Company by the Initial Purchasers expressly for use therein; and

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to reimburse the Company, any Guarantor and each such director, officer, employee or controlling person for any and all expenses (including the reasonable fees and disbursements of counsel) as such expenses are reasonably incurred by the Company, any Guarantor or such director, officer or employee or controlling person in connection with investigating, defending, settling, compromising or paying any such loss, claim, damage, liability, expense or action. Each of the Company and the Guarantors hereby acknowledges that the only information that the Initial Purchasers have furnished to the Company expressly for use in the Pricing Disclosure Package or the Final Offering Memorandum (or any amendment or supplement thereto) are the statements in the fourth sentence of the sixth paragraph, the eighth paragraph and the tenth paragraph under the caption “Plan of Distribution” in the Preliminary Offering Memorandum and the Final Offering Memorandum. The indemnity agreement set forth in this Section 8 (b) shall be in addition to any liabilities that each Initial Purchaser may otherwise have.

     (c) Notifications and Other Indemnification Procedures. Promptly after receipt by an indemnified party under this Section 8 of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against an indemnifying party under this Section 8, notify the indemnifying party in writing of the commencement thereof, but the omission so to notify the indemnifying party will not relieve it from any liability which it may have to any indemnified party for contribution or otherwise under the indemnity agreement contained in this Section 8 other than to the extent it is prejudiced as a proximate result of such failure. In case any such action is brought against any indemnified party and such indemnified party seeks or intends to seek indemnity from an indemnifying party, the indemnifying party will be entitled to participate in and, to the extent that it shall elect, jointly with all other indemnifying parties similarly notified, by written notice delivered to the indemnified party promptly after receiving the aforesaid notice from such indemnified party, to assume the defense thereof with counsel reasonably satisfactory to such indemnified party; provided, however, if the defendants in any such action include both the indemnified party and the indemnifying party and the indemnified party shall have reasonably concluded that a conflict may arise between the positions of the indemnifying party and the indemnified party in conducting the defense of any such action or that there may be legal defenses available to it and/or other indemnified parties which are different from or additional to those available to the indemnifying party, the indemnified party or parties shall have the right to select separate counsel to assume such legal defenses and to otherwise participate in the defense of such action on behalf of such indemnified party or parties. Upon receipt of notice from the indemnifying party to such

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indemnified party of such indemnifying party’s election so to assume the defense of such action and approval by the indemnified party of counsel, the indemnifying party will not be liable to such indemnified party under this Section 8 for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof unless (i) the indemnified party shall have employed separate counsel in accordance with the proviso to the immediately preceding sentence (it being understood, however, that the indemnifying party shall not be liable for the expenses of more than one separate counsel (together with local counsel), approved by the indemnifying party (Banc of America Securities LLC in the case of Sections 8(b) and 9 hereof), representing the indemnified parties who are parties to such action) or (ii) the indemnifying party shall not have employed counsel satisfactory to the indemnified party to represent the indemnified party within a reasonable time after notice of commencement of the action, in each of which cases the fees and expenses of counsel shall be at the expense of the indemnifying party.

     (d) Settlements. The indemnifying party under this Section 8 shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the indemnifying party agrees to indemnify the indemnified party against any loss, claim, damage, liability or expense by reason of such settlement or judgment. Notwithstanding the foregoing sentence, if at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel as contemplated by this Section 8, the indemnifying party agrees that it shall be liable for any settlement of any proceeding effected without its written consent if (i) such settlement is entered into more than 60 days after receipt by such indemnifying party of the aforesaid request and (ii) such indemnifying party shall not have reimbursed the indemnified party in accordance with such request prior to the date of such settlement. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement, compromise or consent to the entry of judgment in any pending or threatened action, suit or proceeding in respect of which any indemnified party is or could have been a party and indemnity was or could have been sought hereunder by such indemnified party, unless such settlement, compromise or consent (i) includes an unconditional release of such indemnified party from all liability on claims that are the subject matter of such action, suit or proceeding and (ii) does not include any statements as to or any findings of fault, culpability or failure to act by or on behalf of any indemnified party.

          SECTION 9. Contribution. If the indemnification provided for in Section 8 hereof is for any reason held to be unavailable to or otherwise insufficient to hold harmless an indemnified party in respect of any losses, claims, damages, liabilities or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount paid or payable by such indemnified party, as incurred, as a result of any losses, claims, damages, liabilities or expenses referred to therein (i) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other hand, from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative

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fault of the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other hand, in connection with the statements or omissions which resulted in such losses, claims, damages, liabilities or expenses, as well as any other relevant equitable considerations. The relative benefits received by the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other hand, in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Company and the total discount received by the Initial Purchasers bear to the aggregate initial offering price of the Securities. The relative fault of the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other hand, shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company and the Guarantors, on the one hand, or the Initial Purchasers, on the other hand, and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

          The amount paid or payable by a party as a result of the losses, claims, damages, liabilities and expenses referred to above shall be deemed to include, subject to the limitations set forth in Section 8 hereof, any legal or other fees or expenses reasonably incurred by such party in connection with investigating or defending any action or claim. The provisions set forth in Section 8 hereof with respect to notice of commencement of any action shall apply if a claim for contribution is to be made under this Section 9; provided, however, that no additional notice shall be required with respect to any action for which notice has been given under Section 8 hereof for purposes of indemnification.

          The Company, the Guarantors and the Initial Purchasers agree that it would not be just and equitable if contribution pursuant to this Section 9 were determined by pro rata allocation (even if the Initial Purchasers were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in this Section 9.

          Notwithstanding the provisions of this Section 9, no Initial Purchaser shall be required to contribute any amount in excess of the discount received by such Initial Purchaser in connection with the Securities distributed by it. No person guilty of fraudulent misrepresentation (within the meaning of Section 11 of the Securities Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Initial Purchasers’ obligations to contribute pursuant to this Section 9 are several, and not joint, in proportion to their respective commitments as set forth opposite their names in Schedule A. For purposes of this Section 9, each director, officer and employee of an Initial Purchaser and each person, if any, who controls an Initial Purchaser within the meaning of the Securities Act and the Exchange Act shall have the same rights to contribution as such Initial Purchaser, and each director, officer or employee of the Company or any Guarantor, and each person, if any, who controls the Company or any Guarantor within the meaning of the Securities Act and the Exchange Act shall have the same rights to contribution as the Company and the Guarantors.

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          SECTION 10. Termination of this Agreement. Prior to the Closing Date, this Agreement may be terminated by the Initial Purchasers by notice given to the Company if at any time after the date of this Agreement: (i) trading or quotation in any of the Company’s securities shall have been suspended or limited by the Commission or by NASDAQ, or trading in securities generally on either NASDAQ or the NYSE shall have been suspended or limited, or minimum or maximum prices shall have been generally established on any of such quotation system or stock exchange by the Commission or the NASD; (ii) a general banking moratorium shall have been declared by any of federal, New York or Delaware authorities; (iii) there shall have occurred any outbreak or escalation of national or international hostilities or any crisis or calamity, or any change in the United States or international financial markets, or any substantial change or development involving a prospective substantial change in United States’ or international political, financial or economic conditions, as in the judgment of the Initial Purchasers is material and adverse and makes it impracticable to proceed with the offering sale or delivery of the Securities in the manner and on the terms described in the Pricing Disclosure Package or to enforce contracts for the sale of securities; (iv) in the judgment of the Initial Purchasers there shall have occurred any Material Adverse Change; or (v) the Company and its subsidiaries shall have sustained a loss by strike, fire, flood, earthquake, accident or other calamity of such character as in the judgment of the Initial Purchasers may interfere materially with the conduct of the business and operations of the Company and its subsidiaries regardless of whether or not such loss shall have been insured. Any termination pursuant to this Section 10 shall be without liability on the part of (i) the Company or any Guarantor to any Initial Purchaser, except that the Company and the Guarantors shall be obligated to reimburse the expenses of the Initial Purchasers pursuant to Sections 4 and 6 hereof, (ii) any Initial Purchaser to the Company, or (iii) any party hereto to any other party, except that the provisions of Sections 8 and 9 hereof shall at all times be effective and shall survive such termination.

          SECTION 11. Representations and Indemnities to Survive Delivery. The respective indemnities, agreements, representations, warranties and other statements of the Company and the Guarantors and of each of their respective officers and of the several Initial Purchasers set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Initial Purchaser or the Company or any of the Guarantors or any of its or their partners, officers, directors, employees or any controlling person, as the case may be, and will survive delivery of and payment for the Securities sold hereunder and any termination of this Agreement.

          SECTION 12. Notices. All communications hereunder shall be in writing and shall be mailed, hand delivered, couriered or facsimiled and confirmed to the parties hereto as follows:

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If to the Initial Purchasers:

Banc of America Securities LLC
9 West 57th Street

New York, NY 10019
Facsimile: (212) 415-9634
Attention: Lex Maultsby

with a copy to:

Fried, Frank, Harris, Shriver & Jacobson LLP
One New York Plaza
New York, NY 10004
Facsimile: (212) 859-4000
Attention: Valerie Ford Jacob, Esq.

If to the Company or the Guarantors:

6300 Bridge Point Parkway
Building 2, Suite 500
Austin, TX 78730
Phone: (512) 427-3300
Facsimile: (512) 427-3400
Attention: Warren Ludlow

General Counsel

with a copy to:

Thompson & Knight LLP
1700 Pacific Avenue, Suite 3300
Dallas, Texas 75201
Facsimile: (214) 969-1751
Attention: Joe Dannenmaier

     Any party hereto may change the address or facsimile number for receipt of communications by giving written notice to the others.

          SECTION 13. Successors. This Agreement will inure to the benefit of and be binding upon the parties hereto, including any substitute Initial Purchasers pursuant to Section 16 hereof, and to the benefit of the indemnified parties referred to in Sections 8 and 9 hereof, and in each case their respective successors, and no other person will have any right or obligation hereunder. The term “successors” shall not include any Subsequent Purchaser of other purchaser of the Securities as such from any of the Initial Purchasers merely by reason of such purchase.

          SECTION 14. Partial Unenforceability. The invalidity or unenforceability of any section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other section, paragraph or provision hereof. If any section, paragraph or provision of this Agreement is for any reason determined to be

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invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.

          SECTION 15. Governing Law Provisions. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF NEW YORK APPLICABLE TO AGREEMENTS MADE AND TO BE PERFORMED IN SUCH STATE WITHOUT REGARD TO CONFLICTS OF LAW PRINCIPLES THEREOF.

     (a) Consent to Jurisdiction. Any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby (“Related Proceedings”) may be instituted in the federal courts of the United States of America located in the City and County of New York or the courts of the State of New York in each case located in the City and County of New York (collectively, the “Specified Courts”), and each party irrevocably submits to the exclusive jurisdiction (except for suits, actions, or proceedings instituted in regard to the enforcement of a judgment of any Specified Court in a Related Proceeding, as to which such jurisdiction is non-exclusive) of the Specified Courts in any Related Proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any Related Proceeding brought in any Specified Court. The parties irrevocably and unconditionally waive any objection to the laying of venue of any Specified Proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any Specified Court that any Related Proceeding brought in any Specified Court has been brought in an inconvenient forum.

          SECTION 16. Default of One or More of the Several Initial Purchasers. If any one or more of the several Initial Purchasers shall fail or refuse to purchase Securities that it or they have agreed to purchase hereunder on the Closing Date, and the aggregate number of Securities which such defaulting Initial Purchaser or Initial Purchasers agreed but failed or refused to purchase does not exceed 10% of the aggregate number of the Securities to be purchased on such date, the other Initial Purchasers shall be obligated, severally, in the proportions that the number of Securities set forth opposite their respective names on Schedule A bears to the aggregate number of Securities set forth opposite the names of all such non-defaulting Initial Purchasers, or in such other proportions as may be specified by the Initial Purchasers with the consent of the non-defaulting Initial Purchasers, to purchase the Securities which such defaulting Initial Purchaser or Initial Purchasers agreed but failed or refused to purchase on the Closing Date. If any one or more of the Initial Purchasers shall fail or refuse to purchase Securities and the aggregate number of Securities with respect to which such default occurs exceeds 10% of the aggregate number of Securities to be purchased on the Closing Date, and arrangements satisfactory to the Initial Purchasers and the Company for the purchase of such Securities are not made within 48 hours after such default, this Agreement shall terminate without liability of any party to any other party except that the provisions of Sections 4, 6, 8 and 9 hereof shall at all times be effective and shall survive such

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termination. In any such case either the Initial Purchasers or the Company shall have the right to postpone the Closing Date, as the case may be, but in no event for longer than seven days in order that the required changes, if any, to the Final Offering Memorandum or any other documents or arrangements may be effected.

          As used in this Agreement, the term “Initial Purchaser” shall be deemed to include any person substituted for a defaulting Initial Purchaser under this Section 16. Any action taken or not taken under this Section 16 shall not relieve any defaulting Initial Purchaser from liability in respect of any default of such Initial Purchaser under this Agreement.

          SECTION 17. No Advisory or Fiduciary Responsibility. Each of the Company and the Guarantors acknowledges and agrees that: (i) the purchase and sale of the Securities pursuant to this Agreement, including the determination of the offering price of the Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Company and the Guarantors, on the one hand, and the several Initial Purchasers, on the other hand, and the Company and the Guarantors are capable of evaluating and understanding and understand and, assuming the accuracy of the representations and warranties of the Initial Purchasers and the fulfillment by them of their obligations, accept the terms, risks and conditions of the transactions contemplated by this Agreement; (ii) in connection with each transaction contemplated hereby and the process leading to such transaction each Initial Purchaser is and has been acting solely as a principal and is not the agent or fiduciary of the Company, Guarantors or their respective affiliates, stockholders, creditors or employees or any other party; (iii) no Initial Purchaser has assumed or will assume an advisory or fiduciary responsibility in favor of the Company and the Guarantors with respect to any of the transactions contemplated hereby or the process leading thereto (irrespective of whether such Initial Purchaser has advised or is currently advising the Company or the Guarantors on other matters) or any other obligation to the Company and the Guarantors except the obligations expressly set forth in this Agreement; (iv) the several Initial Purchasers and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company and the Guarantors and that the several Initial Purchasers have no obligation to disclose any of such interests by virtue of any fiduciary or advisory relationship; and (v) the Initial Purchasers have not provided any legal, accounting, regulatory or tax advice with respect to the offering contemplated hereby and the Company and the Guarantors have consulted their own legal, accounting, regulatory and tax advisors to the extent they deemed appropriate.

          This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company, the Guarantors and the Initial Purchasers, or any of them, with respect to the subject matter hereof. The Company and the Guarantors hereby waive and release, to the fullest extent permitted by law, any claims that the Company and the Guarantors may have against the Initial Purchasers with respect to any breach or alleged breach of fiduciary duty.

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          SECTION 18. General Provisions. This Agreement constitutes the entire agreement of the parties to this Agreement and supersedes all prior written or oral and all contemporaneous oral agreements, understandings and negotiations with respect to the subject matter hereof. This Agreement may be executed in two or more counterparts, each one of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. This Agreement may not be amended or modified unless in writing by all of the parties hereto, and no condition herein (express or implied) may be waived unless waived in writing by each party whom the condition is meant to benefit. The section headings herein are for the convenience of the parties only and shall not affect the construction or interpretation of this Agreement.

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          If the foregoing is in accordance with your understanding of our agreement, kindly sign and return to the Company the enclosed copies hereof, whereupon this instrument, along with all counterparts hereof, shall become a binding agreement in accordance with its terms.

Very truly yours,
BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By: /s/ Eugene B. Shepherd, Jr.
Name: Eugene B. Shepherd, Jr.
Title: Chief Financial Officer
BRIGHAM, INC., a Nevada corporation
By: /s/ Eugene B. Shepherd, Jr.
Name: Eugene B. Shepherd, Jr.
Title: Chief Financial Officer
BRIGHAM OIL & GAS, L.P., a Delaware limited partnership
By: BRIGHAM, INC.,
	Its managing general partner
By: /s/ Eugene B. Shepherd, Jr.
Name: Eugene B. Shepherd, Jr.
Title: Chief Financial Officer

          The foregoing Purchase Agreement is hereby confirmed and accepted by the Initial Purchasers as of the date first above written.

BANC OF AMERICA SECURITIES LLC
CREDIT SUISSE SECURITIES (USA) LLC
GREENWICH CAPITAL MARKETS, INC.
BNP PARIBAS SECURITIES CORP.
HIBERNIA SOUTH COAST CAPITAL, INC.
NATEXIS BLEICHROEDER, INC.

By: Banc of America Securities LLC

By:	/s/ Lex Maultsby
	Name:      Lex Maultsby
	Title:      Managing Director

SCHEDULE A

	Aggregate Principal Amount of
Initial Purchasers	Securities to be Purchased
Banc of America Securities LLC		$	85,000,000
Credit Suisse Securities (USA) LLC.			15,000,000
Greenwich Capital Markets, Inc.			15,000,000
BNP Paribas Securities Corp.			5,000,000
Hibernia South Coast Capital, Inc.			2,500,000
Natexis Bleichroeder, Inc.			2,500,000
Total		$	125,000,000

A-1

EXHIBIT A

Form of Opinion of Thompson & Knight LLP, Counsel for the Company, to be Delivered Pursuant to
Section 5(c) of the Purchase Agreement

     1. The Company is a corporation that is validly existing and in good standing under the laws of Delaware. Brigham, Inc. is a corporation that is validly existing and in good standing under the laws of Nevada. Brigham Oil & Gas is a limited partnership that is validly existing and in good standing under the laws of Delaware.

     2. Each Relevant Party (a) has the corporate or limited partnership power, as the case may be, to execute, deliver and perform each Transaction Document to which it is a party and in the case of the Company to conduct its business as described in the Pricing Disclosure Package and the Final Offering Memorandum, (b) has taken all corporate or limited partnership action, as the case may be, necessary to authorize the execution, delivery and performance of such Transaction Documents, and (c) has duly executed and delivered the Purchase Agreement, the Registration Rights Agreement, the DTC Agreement, the Indenture, the Notes and the Guarantees.

     3. Based solely on certificates of public officials, each Relevant Party was in good standing and authorized to do business in each state specified with respect to such Relevant Party in Schedule I.C hereto as of the date specified in such Schedule.

     4. Each of the Registration Rights Agreement, the DTC Agreement and the Indenture to which a Relevant Party is a party is such Relevant Party’s valid and binding obligation, enforceable against it in accordance with the terms thereof. When executed and authenticated as provided in the Indenture, the Notes, the Exchange Notes, the Guarantees and the Guarantees of the Exchange Notes to which a Relevant Party is a party will be such Relevant Party’s valid and binding obligation, enforceable against it in accordance with the terms thereof

     5. The execution and delivery by each Relevant Party of the Transaction Documents to which it is a party do not, and the performance by each such Relevant Party of its obligations thereunder will not, (a) violate the certificate of incorporation or the certificate of formation or bylaws or regulations of such Relevant Party, (b) breach or result in a default under, or require that any consent, approval, license, or authorization be obtained under, any agreement or instrument listed in Schedule I.D hereto (the “Applicable Contracts”) or (c) result in a violation by any such Relevant Party of any Applicable Laws.

     6. No Relevant Party is, or as a result of the transactions contemplated by the Transaction Documents will be, required to register as an investment company under the Investment Company Act of 1940, as amended.

A-1

     7. No authorization, approval or other action by, and no notice to or filing with, any United States federal or New York governmental authority or regulatory body, or any third party that is a party to any Applicable Contract, is required for the due execution, delivery or performance by any Relevant Party of any Transaction Document to which it is a party, except as may be required under the Securities Act and the Trust Indenture Act of 1939, as amended, in connection with the registration statement described in the Final Offering Memorandum and contemplated by the Registration Rights Agreement and as may be required under the securities or blue sky laws of any jurisdiction in the United States in connection with the offer and sale of the Securities.

     8. Based upon the representations, warranties and agreements of the Company and the Initial Purchasers in the Purchase Agreement and assuming compliance with the offering and transfer procedures and restrictions described in the Final Offering Memorandum, it is not necessary in connection with the offer and sale of the Securities to you under the Purchase Agreement or in connection with the initial resale of such Securities by you in the manner contemplated by the Purchase Agreement to register the Securities under the Securities Act of 1933, as amended, or to qualify the Indenture under the Trust Indenture Act of 1939, as amended, other than any registration or qualification that may be required in connection with the Exchange Offer contemplated by the Final Offering Memorandum and the Registration Rights Agreement, it being understood that no opinion is expressed as to any subsequent resale of any Securities.

     9. The statements in the Pricing Disclosure Package and the Final Offering Memorandum under the captions “Description of Other Indebtedness”, “Description of Notes” and “Plan of Distribution”, in each case, insofar as such statements constitute summaries of legal matters or documents referred to therein, fairly summarize in all material respects the legal matters or documents referred to therein. The statements in the Pricing Disclosure Package and the Final Offering Memorandum under the caption “Material United States Federal Tax Considerations,” insofar as such statements constitute summaries of legal matters referred to therein, fairly summarize in all material respects the legal matters referred to therein.

     10. In the course of our acting as counsel to the Company in connection with the preparation of the Pricing Disclosure Package and the Final Offering Memorandum, we participated in conferences with officers and other representatives of the Relevant Parties, representatives of the Initial Purchasers and the Initial Purchasers’ counsel, and representatives of the independent public accountants for the Relevant Parties, at which the contents of the Pricing Disclosure Package and the Final Offering Memorandum and related matters were discussed and, although we are not passing upon, and do not assume any responsibility for, the accuracy, completeness or fairness of the statements contained in the Pricing Disclosure Package and the Final Offering Memorandum and have not made any independent checks or verification thereof, during the course of such participation, nothing has come to our attention that leads us to believe that the Pricing

A-2

Disclosure Package, as Time of Execution, or that the Final Offering Memorandum, as of the date thereof and as of the date hereof, contained or contains any untrue statement of any material fact or omitted or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading; except that we express no opinion and provide no negative assurance as to the financial statements and related notes and schedules and other financial, oil and gas reserves or prospects or production data and statistical data derived from such financial statements, notes and schedules and other financial, oil and gas reserves or prospects or production data.

A-3

EXHIBIT B

Subsidiaries of Brigham Exploration Company

BRIGHAM, INC.

BRIGHAM OIL & GAS, L.P.

BRIGHAM HOLDINGS I, LLC

BRIGHAM HOLDINGS II, LLC

B-1

ANNEX I

     Resale Pursuant to Regulation S or Rule 144A. Each Initial Purchaser understands that:

     Such Initial Purchaser agrees that it has not offered or sold and will not offer or sell the Securities in the United States or to, or for the benefit or account of, a U.S. Person (other than a distributor), in each case, as defined in Rule 902 of Regulation S (i) as part of its distribution at any time and (ii) otherwise until 40 days after the later of the commencement of the offering of the Securities pursuant hereto and the Closing Date, other than in accordance with Regulation S or another exemption from the registration requirements of the Securities Act. Such Initial Purchaser agrees that, during such 40-day restricted period, it will not cause any advertisement with respect to the Securities (including any “tombstone” advertisement) to be published in any newspaper or periodical or posted in any public place and will not issue any circular relating to the Securities, except such advertisements as are permitted by and include the statements required by Regulation S.

     Such Initial Purchaser agrees that, at or prior to confirmation of a sale of Securities by it to any distributor, dealer or person receiving a selling concession, fee or other remuneration during the 40-day restricted period referred to in Rule 903 of Regulation S, it will send to such distributor, dealer or person receiving a selling concession, fee or other remuneration a confirmation or notice to substantially the following effect:

“The Securities covered hereby have not been registered under the U.S. Securities Act of 1933, as amended (the “Securities Act”), and may not be offered and sold within the United States or to, or for the account or benefit of, U.S. persons (i) as part of your distribution at any time or (ii) otherwise until 40 days after the later of the date the Securities were first offered to persons other than distributors in reliance upon Regulation S and the Closing Date, except in either case in accordance with Regulation S under the Securities Act (or in accordance with Rule 144A under the Securities Act in transactions that are exempt from the registration requirements of the Securities Act), and in connection with any subsequent sale by you of the Securities covered hereby in reliance on Regulation S under the Securities Act during the period referred to above to any distributor, dealer or person receiving a selling concession, fee or other remuneration, you must deliver a notice to substantially the foregoing effect. Terms used above have the meanings assigned to them in Regulation S under the Securities Act.”

I-1

EX-10.2

EXHIBIT 10.2

REGISTRATION RIGHTS AGREEMENT

by and among

Brigham Exploration Company
Brigham, Inc.
Brigham Oil & Gas, L.P.

and

Banc of America Securities LLC
Credit Suisse Securities (USA) LLC
Greenwich Capital Markets, Inc.
BNP Paribas Securities Corp.
Hibernia South Coast Capital, Inc.
Natexis Bleichroeder, Inc.

Dated as of April 20, 2006

REGISTRATION RIGHTS AGREEMENT

     This Registration Rights Agreement (this “Agreement”) is made and entered into as of April 20, 2006, by and among Brigham Exploration Company, a Delaware corporation (the “Company”), Brigham, Inc., a Nevada corporation and Brigham Oil & Gas, L.P., a Delaware limited partnership (collectively, with Brigham, Inc., the “Guarantors”), and Banc of America Securities LLC, Credit Suisse Securities (USA) LLC, Greenwich Capital Markets, Inc., BNP Paribas Securities Corp., Hibernia South Coast Capital, Inc. and Natexis Bleichroeder, Inc. (collectively, the “Initial Purchasers”), each of whom has agreed to purchase the Company’s 9⅝% Senior Notes due 2014 (the “Initial Notes”) fully and unconditionally guaranteed by the Guarantors (the “Guarantees”) pursuant to the Purchase Agreement (as defined below). The Initial Notes and the Guarantees attached thereto are herein collectively referred to as the “Initial Securities.”

     This Agreement is made pursuant to the Purchase Agreement, dated April 12, 2006 (the “Purchase Agreement”), among the Company, the Guarantors and the Initial Purchasers (i) for the benefit of the Initial Purchasers and (ii) for the benefit of the holders from time to time of the Initial Securities, including the Initial Purchasers. In order to induce the Initial Purchasers to purchase the Initial Securities, the Company has agreed to provide the registration rights set forth in this Agreement. The execution and delivery of this Agreement is a condition to the obligations of the Initial Purchasers set forth in Section 5(h) of the Purchase Agreement.

     The parties hereby agree as follows:

     Section 1. Definitions. In addition to other terms defined herein, as used in this Agreement, the following capitalized terms shall have the following meanings:

     Additional Interest Payment Date: With respect to the Initial Securities, each Interest Payment Date.

     Broker-Dealer: Any broker or dealer registered under the Exchange Act.

     Business Day: Any day other than a Saturday, Sunday or U.S. federal holiday or a day on which banking institutions or trust companies located in New York, New York are authorized or obligated to be closed.

     Closing Date: The date of this Agreement.

     Commission: The Securities and Exchange Commission.

     Company: As defined in the preamble hereto.

     Consummate: A registered Exchange Offer shall be deemed “Consummated” for purposes of this Agreement upon the occurrence of (i) the filing and effectiveness under the Securities Act of the Exchange Offer Registration Statement relating to the Exchange Securities to be issued in the Exchange Offer, (ii) the maintenance of such Registration Statement continuously effective and the keeping of the Exchange Offer open for a period not less than the

minimum period required pursuant to Section 3(b) hereof, and (iii) the delivery by the Company to the Registrar under the Indenture of Exchange Securities in the same aggregate principal amount as the aggregate principal amount of Initial Securities that were tendered by Holders thereof pursuant to the Exchange Offer.

     Effectiveness Target Date: As defined in Section 5 hereof.

     Exchange Act: The Securities Exchange Act of 1934, as amended.

     Exchange Offer: The registration by the Company under the Securities Act of the Exchange Securities pursuant to a Registration Statement pursuant to which the Company offers the Holders of all outstanding Transfer Restricted Securities the opportunity to exchange all such outstanding Transfer Restricted Securities held by such Holders for Exchange Securities in an aggregate principal amount equal to the aggregate principal amount of the Transfer Restricted Securities tendered in such exchange offer by such Holders.

     Exchange Offer Registration Statement: The Registration Statement relating to the Exchange Offer, including the related Prospectus.

     Exempt Resales: The transactions in which the Initial Purchasers propose to sell the Initial Securities to certain “qualified institutional buyers,” as such term is defined in Rule 144A under the Securities Act and to certain non-U.S. persons pursuant to Regulation S under the Securities Act.

     Exchange Securities: The 9⅝% Senior Notes due 2014, of the same series under the Indenture as the Initial Securities, to be issued to Holders in exchange for Transfer Restricted Securities pursuant to this Agreement.

     Guarantees: As defined in the preamble hereto.

     Guarantors: As defined in the preamble hereto.

     Holders: As defined in Section 2(b) hereof.

     Indemnified Holder: As defined in Section 9(a) hereof.

     Indenture: The Indenture, dated as of April 20, 2006, by and among the Company, the Guarantors and Wells Fargo Bank, N.A., as trustee (the “Trustee”), pursuant to which the Securities are to be issued, as such Indenture is amended or supplemented from time to time in accordance with the terms thereof.

     Initial Purchasers: As defined in the preamble hereto.

     Initial Notes: As defined in the preamble hereto.

     Initial Placement: The issuance and sale by the Company of the Initial Securities to the Initial Purchasers pursuant to the Purchase Agreement.

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     Initial Securities: As defined in the preamble hereto.

     Interest Payment Date: As defined in the Indenture and the Securities.

     Issuer Free Writing Prospectus: As defined in Section 4(c) hereof.

     Market-Maker: As defined in Section 6 hereof.

     Market-Maker’s Information: As defined in Section 6 hereof.

     Market-Making Registration: As defined in Section 6 hereof.

     Market-Making Registration Statement: As defined in Section 6 hereof.

     NASD: NASD Inc.

     Person: An individual, partnership, corporation, trust or unincorporated organization, or a government or agency or political subdivision thereof.

     Prospectus: The prospectus included in a Registration Statement, as amended or supplemented by any prospectus supplement and by all other amendments thereto, including post-effective amendments, and all material incorporated by reference into such Prospectus.

     Registration Default: As defined in Section 5 hereof.

     Registration Statement: Any registration statement of the Company relating to (a) an offering of Exchange Securities pursuant to an Exchange Offer, (b) the registration for resale of Transfer Restricted Securities pursuant to the Shelf Registration Statement, or (c) the Market-Making Registration, which is filed pursuant to the provisions of this Agreement, in each case, including the Prospectus included therein, all amendments and supplements thereto (including post-effective amendments) and all exhibits and material incorporated by reference therein. Notwithstanding the foregoing, solely for purposes of Section 7(c) hereof, the Market Making Registration Statement is excluded from this definition of “Registration Statement.”

     Rule 430B Information: Any information included in a Prospectus that was omitted from the Registration Statement at the time it became effective but that is deemed to be part of and included in such Registration Statement pursuant to Rule 430B under the 1933 Act.

     Securities: The Initial Securities and the Exchange Securities.

     Securities Act: The Securities Act of 1933, as amended.

     Shelf Filing Deadline: As defined in Section 4(a) hereof.

     Shelf Registration Statement: As defined in Section 4(a) hereof.

     Trust Indenture Act: The Trust Indenture Act of 1939, as amended.

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     Transfer Restricted Securities: Each Initial Security, until the earliest to occur of (a) the date on which such Initial Security is exchanged in the Exchange Offer for an Exchange Security entitled to be resold to the public by the Holder thereof without complying with the prospectus delivery requirements of the Securities Act, (b) the date on which such Initial Security has been effectively registered under the Securities Act and disposed of in accordance with a Shelf Registration Statement, (c) the date on which such Initial Security is distributed to the public pursuant to Rule 144 under the Securities Act or by a Broker-Dealer pursuant to the “Plan of Distribution” contemplated by the Exchange Offer Registration Statement (including delivery of the Prospectus contained therein), and (d) the date on which such Initial Security may be resold without restriction pursuant to Rule 144(k) under the Securities Act.

     Underwritten Registration or Underwritten Offering: A registration in which securities of the Company are sold to an underwriter for reoffering to the public.

     Section 2. Securities Subject to this Agreement.

     (a) Transfer Restricted Securities. The securities entitled to the benefits of this Agreement are the Transfer Restricted Securities.

     (b) Holders of Transfer Restricted Securities. A Person is deemed to be a holder of Transfer Restricted Securities (each, a “Holder”) whenever such Person owns Transfer Restricted Securities. Holders may include one or more of the Initial Purchasers from time to time.

     Section 3. Registered Exchange Offer.

     (a) Unless the Exchange Offer shall not be permissible under applicable law or Commission policy (after the procedures set forth in Section 7(a) hereof have been complied with), each of the Company and the Guarantors shall use their reasonable best efforts to (i) cause to be filed with the Commission as soon as practicable after the Closing Date, but in no event later than 90 days after the Closing Date (or if such 90th day is not a Business Day, the next succeeding Business Day), a Registration Statement under the Securities Act relating to the Exchange Securities and the Exchange Offer, (ii) cause such Registration Statement to become effective at the earliest possible time, but in no event later than 180 days after the Closing Date (or if such 180th day is not a Business Day, the next succeeding Business Day), (iii) in connection with the foregoing, (A) file all pre-effective amendments to such Registration Statement as may be necessary in order to cause such Registration Statement to become effective, (B) if applicable, file a post-effective amendment to such Registration Statement pursuant to Rule 430A under the Securities Act and (C) cause all necessary filings in connection with the registration and qualification of the Exchange Securities to be made under the state securities or blue sky laws of such jurisdictions as are necessary to permit Consummation of the Exchange Offer, and (iv) upon the effectiveness of such Registration Statement, commence the Exchange Offer. The Exchange Offer shall be on the appropriate form permitting registration of the Exchange Securities to be offered in exchange for the Transfer Restricted Securities and to permit resales of Initial Securities held by Broker-Dealers as contemplated by Section 3(c) hereof.

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     (b) The Company and the Guarantors shall cause the Exchange Offer Registration Statement to be effective continuously and shall keep the Exchange Offer open for a period of not less than the minimum period required under applicable federal and state securities laws to Consummate the Exchange Offer; provided, however, that in no event shall such period be less than 30 days (or longer if required by applicable law) after the date notice of the Exchange Offer is mailed to the Holders. The Company shall cause the Exchange Offer to comply with all applicable federal and state securities laws. No securities other than the Exchange Securities shall be included in the Exchange Offer Registration Statement. The Company shall use its reasonable best efforts to cause the Exchange Offer to be Consummated on the earliest practicable date after the Exchange Offer Registration Statement has become effective, but in no event later than 210 days after the Closing Date (or if such 210th day is not a Business Day, the next succeeding Business Day).

     (c) The Company shall indicate in a “Plan of Distribution” section contained in the Prospectus forming a part of the Exchange Offer Registration Statement that any Broker-Dealer who holds Initial Securities that are Transfer Restricted Securities and that were acquired for its own account as a result of market-making activities or other trading activities (other than Transfer Restricted Securities acquired directly from the Company), may exchange such Initial Securities pursuant to the Exchange Offer; however, such Broker-Dealer may be deemed to be an “underwriter” within the meaning of the Securities Act and must, therefore, deliver a prospectus meeting the requirements of the Securities Act in connection with any resales of the Exchange Securities received by such Broker-Dealer in the Exchange Offer, which prospectus delivery requirement may be satisfied by the delivery by such Broker-Dealer of the Prospectus contained in the Exchange Offer Registration Statement. Such “Plan of Distribution” section shall also contain all other information with respect to such resales by Broker-Dealers that the Commission may require in order to permit such resales pursuant thereto, but such “Plan of Distribution” shall not name any such Broker-Dealer or disclose the amount of Initial Securities held by any such Broker-Dealer except to the extent required by the Commission as a result of a change in policy after the date of this Agreement.

     Each of the Company and the Guarantors shall use its reasonable best efforts to keep the Exchange Offer Registration Statement continuously effective, supplemented and amended as required by the provisions of Section 7(c) hereof to the extent necessary to ensure that it is available for resales of Initial Securities acquired by Broker-Dealers for their own accounts as a result of market-making activities or other trading activities, and to ensure that it conforms with the requirements of this Agreement, the Securities Act and the policies, rules and regulations of the Commission as announced from time to time, for a period ending on the earlier of (i) 180 days from the date on which the Exchange Offer Registration Statement is declared effective and (ii) the date on which a Broker-Dealer is no longer required to deliver a prospectus in connection with market-making or other trading activities.

     The Company shall provide sufficient copies of the latest version of such Prospectus to Broker-Dealers promptly upon request at any time during such 180-day (or shorter as provided in the foregoing sentence) period in order to facilitate such resales.

     (d) As a condition to its participation in the Exchange Offer pursuant to the terms of this Agreement, each Holder of Transfer Restricted Securities shall furnish, upon the request of

5

the Company, prior to the Consummation thereof, a written representation to the Company (which may be contained in the letter of transmittal contemplated by the Exchange Offer Registration Statement) to the effect that (A) it is not an affiliate of the Company, (B) it is not engaged in, and does not intend to engage in, and has no arrangement or understanding with any Person to participate in, a distribution of the Exchange Securities to be issued in the Exchange Offer, (C) it is acquiring the Exchange Securities in its ordinary course of business, (D) at the time of the commencement of the Exchange Offer, such Holder will have no arrangement or understanding with any Person to participate in the distribution (within the meaning of the Securities Act) of the Exchange Securities in violation of the provisions of the Securities Act, and (E) if such Holder is a Broker-Dealer that will receive Exchange Securities for its own account in exchange for Transfer Restricted Securities that were acquired as a result of market-making or other trading activities, that it will deliver a Prospectus in connection with any resale of such Exchange Securities. In addition, all such Holders of Transfer Restricted Securities shall otherwise cooperate in the Company’s preparations for the Exchange Offer. Each Holder hereby acknowledges and agrees that any Broker-Dealer and any such Holder using the Exchange Offer to participate in a distribution of the securities to be acquired in the Exchange Offer (1) could not under Commission policy as in effect on the date of this Agreement rely on the position of the Commission enunciated in Morgan Stanley and Co., Inc. (available June 5, 1991) and Exxon Capital Holdings Corporation (available May 13, 1988), as interpreted in the Commission’s letter to Shearman & Sterling dated July 2, 1993, and similar no-action letters (which may include any no-action letter obtained pursuant to clause (i) above), and (2) must comply with the registration and prospectus delivery requirements of the Securities Act in connection with a secondary resale transaction and that such a secondary resale transaction should be covered by an effective registration statement containing the selling security holder information required by Item 507 or 508, as applicable, of Regulation S-K if the resales are of Exchange Securities obtained by such Holder in exchange for Initial Securities acquired by such Holder directly from the Company.

     Section 4. Shelf Registration.

     (a) Shelf Registration. If (i) the Company is not required to file an Exchange Offer Registration Statement or to consummate the Exchange Offer because the Exchange Offer is not permitted by applicable law or Commission policy (after the procedures set forth in Section 7(a) hereof have been complied with), (ii) for any reason the Exchange Offer is not Consummated within 210 days after the Closing Date (or if such 210th day is not a Business Day, the next succeeding Business Day), or (iii) with respect to any Holder of Transfer Restricted Securities which notifies the Company in writing prior to the 20th day following the Consummation of the Exchange Offer (A) such Holder is prohibited by applicable law or Commission policy from participating in the Exchange Offer, or (B) such Holder may not resell the Exchange Securities acquired by it in the Exchange Offer to the public without delivering a prospectus and that the Prospectus contained in the Exchange Offer Registration Statement is not appropriate or available for such resales by such Holder, or (C) such Holder is a Broker-Dealer and holds Initial Securities acquired directly from the Company or one of its affiliates, the Company and the Guarantors shall

     (x) cause to be filed a shelf registration statement pursuant to Rule 415 under the Securities Act, which may be an amendment to the Exchange Offer Registration Statement (in either event, the “Shelf Registration Statement”) as promptly as practicable,

6

and in any event on or prior to the earliest to occur of (1) the 30th day after the date on which the Company determines that it is not required to file the Exchange Offer Registration Statement, (2) the 240th day after the Closing Date (in the case of clause (ii) above) (or if such 240th day is not a Business Day, the next succeeding Business Day) and (3) the 30th day after the date on which the Company receives notice from a Holder of Transfer Restricted Securities or an Initial Purchaser as contemplated by clause (iii) above (such earliest date being the “Shelf Filing Deadline”), which Shelf Registration Statement shall provide for resales of all Transfer Restricted Securities the Holders of which shall have provided the information required pursuant to Section 4(b) hereof; and

     (y) use their reasonable best efforts to cause such Shelf Registration Statement to be declared effective by the Commission on or before the 60th day after the Shelf Filing Deadline (or if such 60th day is not a Business Day, the next succeeding Business Day).

     Each of the Company and the Guarantors shall use its reasonable best efforts to keep such Shelf Registration Statement continuously effective, supplemented and amended as required by the provisions of Sections 7(b) and (c) hereof to the extent necessary to ensure that it is available for resales of Transfer Restricted Securities by the Holders entitled to the benefit of this Section 4(a), and to ensure that it conforms with the requirements of this Agreement, the Securities Act and the policies, rules and regulations of the Commission as announced from time to time, for a period of at least two years following the effective date of such Shelf Registration Statement (or shorter period that will terminate when all the Initial Securities covered by such Shelf Registration Statement have been sold pursuant to such Shelf Registration Statement).

     (b) Provision by Holders of Certain Information in Connection with the Shelf Registration Statement. No Holder of Transfer Restricted Securities may include any of its Transfer Restricted Securities in any Shelf Registration Statement pursuant to this Agreement unless and until such Holder furnishes to the Company in writing, within 20 Business Days after receipt of a request therefor, such information as the Company may reasonably request for use in connection with any Shelf Registration Statement or Prospectus or preliminary Prospectus included therein. By acquiring the Initial Securities, each Holder agrees to provide the indemnity set forth in Section 9(b) hereof with respect to the information such Holder furnishes to the Company expressly for use in any Shelf Registration Statement. Each Holder as to which any Shelf Registration Statement is being effected agrees to furnish promptly to the Company all information required to be disclosed in order to make the information previously furnished to the Company by such Holder not materially misleading.

     (c) Issuer Free Writing Prospectuses. The Company represents that any Issuer Free Writing Prospectus will not include any information that conflicts with the information contained in the Shelf Registration Statement or the Prospectus and, any Issuer Free Writing Prospectus, when taken together with the information in the Shelf Registration Statement and the Prospectus, will not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading.

     Section 5. Additional Interest. If (i) the Exchange Offer Registration Statement or any Shelf Registration Statement required by this Agreement is not filed with the Commission on or

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prior to the date specified for such filing in this Agreement, (ii) the Exchange Offer Registration Statement or any Shelf Registration Statement has not been declared effective by the Commission on or prior to the date specified for such effectiveness in this Agreement (the “Effectiveness Target Date”), (iii) the Exchange Offer has not been Consummated on or prior to the date specified for such consummation in this Agreement or (iv) any Exchange Offer Registration Statement or Shelf Registration Statement required by this Agreement is filed and declared effective but shall thereafter cease to be effective or fail to be usable for its intended purpose for more than 30 days (each such event referred to in clauses (i) through (iv), a “Registration Default”), the Company hereby agrees that the interest rate borne by the Transfer Restricted Securities shall be increased by 0.25% per annum during the 90-day period immediately following the occurrence of any Registration Default and shall increase by 0.25% per annum at the end of each subsequent 90-day period during which such Registration Default continues, but in no event shall such increase exceed 1.00% per annum. Following the cure of all Registration Defaults relating to any particular Transfer Restricted Securities, the interest rate borne by the relevant Transfer Restricted Securities will be reduced to the original interest rate borne by such Transfer Restricted Securities; provided, however, that, if after any such reduction in interest rate, a different Registration Default occurs, the interest rate borne by the relevant Transfer Restricted Securities shall again be increased pursuant to the foregoing provisions.

     All obligations of the Company and the Guarantors set forth in the preceding paragraph that are outstanding with respect to any Transfer Restricted Security at the time such security ceases to be a Transfer Restricted Security shall survive until such time as all such obligations with respect to such security shall have been satisfied in full. Notwithstanding the foregoing, (i) the amount of additional interest payable shall not increase because more than one Registration Default has occurred and is pending, and (ii) a Holder of Transfer Restricted Securities or Exchange Securities who is not entitled to the benefits of the Shelf Registration Statement shall not be entitled to additional interest with respect to a Registration Default that pertains to the Shelf Registration Statement.

     Section 6. Market-Making Registration.

     (a) For the sole benefit of Credit Suisse Securities (USA) LLC (in such capacity, the “Market-Maker”) or any of its affiliates (as defined in the rules and regulations of the Commission), so long as (x) any of the Transfer Restricted Securities or Exchange Securities are outstanding and (y) the Market-Maker or any of its affiliates is an affiliate of the Company, the Guarantors or any of their respective affiliates and the Market-Maker proposes to make a market in the Transfer Restricted Securities or Exchange Securities as part of its business in the ordinary course, the following provisions shall apply for the sole benefit of the Market-Maker:

     (i) The Company and the Guarantors shall file under the Securities Act a registration statement (which may be the Exchange Offer Registration Statement or the Shelf Registration Statement if permitted by the rules and regulations of the Commission), in a form reasonably acceptable to the Market-Maker (such filing, the “Market-Making Registration,” and such registration statement, the “Market-Making Registration Statement”). The Company and the Guarantors agree to use their reasonable best efforts to cause the Market-Making Registration Statement to be declared effective on or prior to (i) the date the Exchange Offer is completed pursuant to Section 3 above or

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     (ii) the date the Shelf Registration becomes or is declared effective pursuant to Section 4 above, and to keep such Market-Making Registration Statement continuously effective for so long as the Market-Maker may be required to deliver a Prospectus in connection with transactions in the Securities or the Exchange Securities, as the case may be. In the event that the Market-Maker holds Securities at the time an Exchange Offer is to be conducted under Section 3 above, the Company and the Guarantors agree that the Market-Making Registration shall, if permitted by Commission rules and regulations, provide for the resale by the Market-Maker of such Securities and shall be kept continuously effective for so long as the Market-Maker may be required to deliver a Prospectus in connection with the sale of such Securities. The Company and the Guarantors further agree to supplement or make amendments to the Market-Making Registration Statement, as and when required by the rules, regulations or instructions applicable to the registration form used by the Company and the Guarantors for such Market-Making Registration Statement, and the Company and the Guarantors agree to furnish to the Market-Maker copies of any such supplement or amendment prior to its being used or promptly following its filing with the Commission.

     (ii) Notwithstanding the foregoing, the Company may suspend the offering and sale under the Market-Making Registration Statement for a period or periods that the Board of Directors of the Company reasonably determines to be advisable for valid business reasons, but in any event not to exceed 60 days (or such period as otherwise acceptable to the Market-Maker) in each year during which the Market-Making Registration Statement is required to be effective and usable hereunder (measured from the effective time of the Market-Making Registration Statement to successive anniversaries thereof) if (A) (i) the Board of Directors of the Company determines in good faith that such action is in the best interests of the Company or (ii) the Market Making Registration Statement, Prospectus or amendment or supplement thereto contains an untrue statement of a material fact or omits to state a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading, and (B) the Company notifies the Market-Maker within five days after such Board of Directors makes the relevant determination set forth in clause (A).

     (iii) The Company shall notify the Market-Maker (A) when any post-effective amendment to the Market-Making Registration Statement or any amendment or supplement to the related Prospectus has been filed, and, with respect to any post-effective amendment, when the same has become effective; (B) of any request by the Commission for any post-effective amendment to the Market-Making Registration Statement, any supplement or amendment to the related Prospectus or for additional information; (C) the issuance by the Commission of any stop order suspending the effectiveness of the Market-Making Registration Statement or the initiation of any proceedings for that purpose; (D) of the receipt by the Company of any notification with respect to the suspension of the qualification of the Transfer Restricted Securities or Exchange Securities for sale in any jurisdiction or the initiation or threatening of any proceedings for such purpose; and (E) within 5 days after the happening of any event that results in the Market-Making Registration Statement, the related Prospectus or any amendment or supplement containing an untrue statement of a material fact or omitting to

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state a material fact necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading.

     (iv) If any event contemplated by Section 6(a)(iii)(B) through (E) occurs during the period for which the Company and the Guarantors are required to maintain an effective Market-Making Registration Statement, the Company and the Guarantors shall promptly prepare and file with the Commission a post-effective amendment to the Market-Making Registration Statement or a supplement to the related Prospectus or file any other required document so that the Prospectus will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

     (v) In the event of the issuance of any stop order suspending the effectiveness of the Market-Making Registration Statement or of any order suspending the qualification of the Transfer Restricted Securities or Exchange Securities for sale in any jurisdiction, the Company and the Guarantors shall promptly use their reasonable best efforts to obtain its withdrawal.

     (vi) The Company shall furnish to the Market-Maker, without charge, (i) at least one conformed copy of the Market-Making Registration Statement and any post-effective amendment thereto; and (ii) as many copies of the related Prospectus and any amendment or supplement thereto as the Market-Maker may reasonably request.

     (vii) The Company and the Guarantors shall consent to the use of the Prospectus contained in the Market-Making Registration Statement or any amendment or supplement thereto by the Market-Maker in connection with its market-making activities.

     (viii) Notwithstanding the foregoing provisions of this Section 6, the Company may for valid business reasons, including without limitation, a potential acquisition, divestiture of assets or other material corporate transaction, or if required under the Securities Act or Exchange Act, issue a notice that the Market-Making Registration Statement is no longer effective or the Prospectus included therein is no longer usable for offers and sales of Transfer Restricted Securities or Exchange Securities and may issue any notice suspending use of the Market-Making Registration Statement required under applicable securities laws to be issued for so long as valid business reasons exist and the Company shall not be obligated to amend or supplement the Market-Making Registration Statement or the Prospectus included therein until it reasonably deems appropriate. The Market-Maker agrees that upon receipt of any notice from the Company pursuant to this Section 6(a)(viii), it will discontinue use of the Market-Making Registration Statement until receipt of copies of the supplemented or amended Prospectus relating thereto and until advised in writing by the Company that the use of the Market-Making Registration Statement may be resumed.

     (b) In connection with the Market-Making Registration, the Company shall (i) make reasonably available for inspection by a representative of, and counsel acting for, the Market-Maker all relevant financial and other records, pertinent corporate documents and properties of the Company and the Guarantors and (ii) use its reasonable best efforts to have its officers,

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directors, employees, accountants and counsel supply all relevant information reasonably requested by such representative or counsel or the Market-Maker.

     (c) Prior to the effective date of the Market-Making Registration Statement, the Company and the Guarantors will use their reasonable best efforts to register or qualify such Transfer Restricted Securities or Exchange Securities for offer and sale under the securities or blue sky laws of such jurisdictions as the Market-Maker reasonably requests in writing and do any and all other acts or things necessary or advisable to enable the offer and sale in such jurisdictions of the Transfer Restricted Securities or Exchange Securities covered by the Market-Making Registration Statement; provided that the Company and the Guarantors will not be required to qualify generally to do business in any jurisdiction where they are not then so qualified or to take any action which would subject them to general service of process or to taxation in any such jurisdiction where they are not then so subject.

     (d) The Company represents that the Market-Making Registration Statement, any post-effective amendments thereto, any amendments or supplements to the related Prospectus and any documents filed by them under the Exchange Act will, when they become effective or are filed with the Commission, as the case may be, conform in all material respects to the requirements of the Securities Act and the Exchange Act and the rules and regulations of the Commission thereunder and will not, as of the effective date of such Market-Making Registration Statement or post-effective amendments and as of the filing date of amendments or supplements to such Prospectus or filings under the Exchange Act, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading; provided that no representation or warranty is made as to information contained in or omitted from the Market-Making Registration Statement or the related Prospectus in reliance upon and in conformity with written information furnished to the Company by the Market-Maker specifically for inclusion therein, which information the parties hereto agree will be limited to the statements concerning the market-making activities of the Market-Maker to be set forth on the cover page and in the “Plan of Distribution” section of the Prospectus (the “Market-Maker’s Information”).

     (e) At the time of effectiveness of the Market-Making Registration Statement (unless it is the same as the time of effectiveness of the Exchange Offer Registration Statement) and concurrently with each time the Market-Making Registration Statement or the related Prospectus shall be amended or such Prospectus shall be supplemented, the Company shall notify the Market-Maker and its counsel that:

     (i) the Market-Making Registration Statement has been declared effective;

     (ii) in the case of an amendment or supplement, such amendment has become effective under the Securities Act, and if required, such amendment or supplement to the Prospectus was filed with the Commission pursuant to the subparagraph of Rule 424(b) under the Securities Act; and

     (iii) if requested by the Market-Maker after notice has been provided pursuant to clauses (i) or (ii) above, as of the date of the Market-Making Registration Statement, amendment or supplement, as applicable, the Market-Making Registration Statement and

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the Prospectus, as amended or supplemented, if applicable, did not include any untrue statement of a material fact and did not omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

     (f) The Company and the Guarantors, on the one hand, and the Market-Maker, on the other hand, hereby agree to indemnify each other, and, if applicable, contribute to the other, in accordance with Section 9 of this Agreement.

     (g) The Company and the Guarantors will comply with the provisions of this Section 6 at their own expense and will reimburse the Market-Maker for its reasonable expenses associated with this Section 6 (including reasonable fees of counsel).

     (h) The agreements contained in this Section 6 and the representations, warranties and agreements contained in this Agreement shall survive all offers and sales of the Transfer Restricted Securities or Exchange Securities and shall remain in full force and effect for so long as any of the Transfer Restricted Securities or Exchange Securities are outstanding, regardless of any termination or cancellation of this Agreement or any investigation made by or on behalf of any indemnified party.

     (i) For purposes of this Section 6, any reference to the terms “amend,” “amendment” or “supplement” with respect to the Market-Making Registration Statement or the Prospectus contained therein shall be deemed to refer to and include the filing under the Exchange Act of any document deemed to be incorporated therein by reference.

     Section 7. Registration Procedures.

     (a) Exchange Offer Registration Statement. In connection with the Exchange Offer, the Company and the Guarantors shall comply with all of the provisions of Section 7(c) hereof, shall use their reasonable best efforts to effect such exchange to permit the sale of Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof.

     (b) Shelf Registration Statement. In connection with the Shelf Registration Statement, each of the Company and the Guarantors shall comply with all the provisions of Section 7(c) hereof and shall use its reasonable best efforts to effect such registration to permit the sale of the Transfer Restricted Securities being sold in accordance with the intended method or methods of distribution thereof, and pursuant thereto each of the Company and the Guarantors will as expeditiously as possible prepare and file with the Commission a Registration Statement relating to the registration on any appropriate form under the Securities Act, which form shall be available for the sale of the Transfer Restricted Securities in accordance with the intended method or methods of distribution thereof.

     (c) General Provisions. In connection with any Exchange Offer Registration Statement, any Shelf Registration Statement and any Prospectus related thereto required by this Agreement to permit the sale or resale of Transfer Restricted Securities (including, without limitation, any Exchange Offer Registration Statement, any Shelf Registration Statement and the related Prospectus required to permit resales of Initial Securities by Broker-Dealers), each of the Company and the Guarantors shall:

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     (i) use its reasonable best efforts to keep such Registration Statement continuously effective and provide all requisite financial statements (including, if required by the Securities Act or any regulation thereunder, financial statements of the Guarantors) for the period specified in Section 3 or 4 hereof, as applicable; upon the occurrence of any event that would cause any such Registration Statement or the Prospectus contained therein (A) to contain a material misstatement or omission or (B) not to be effective and usable for resale of Transfer Restricted Securities during the period required by this Agreement, the Company shall file promptly an appropriate amendment to such Registration Statement, in the case of clause (A), correcting any such misstatement or omission, and, in the case of either clause (A) or (B), use its reasonable best efforts to cause such amendment to be declared effective and such Registration Statement and the related Prospectus to become usable for their intended purpose(s) as soon as practicable thereafter;

     (ii) prepare and file with the Commission such amendments and post-effective amendments to the applicable Registration Statement as may be necessary to keep the Registration Statement effective for the applicable period set forth in Section 3 or 4 hereof, as applicable, or such shorter period as will terminate when all Transfer Restricted Securities covered by such Registration Statement have been sold; cause the Prospectus to be supplemented by any required Prospectus supplement, and as so supplemented to be filed pursuant to Rule 424 under the Securities Act, and to comply fully with the provisions of Rules 424 and 430A under the Securities Act, to the extent applicable, in a timely manner; and comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such Registration Statement during the applicable period in accordance with the intended method or methods of distribution by the sellers thereof set forth in such Registration Statement or supplement to the Prospectus;

     (iii) advise the underwriter(s), if any, and selling Holders promptly and, if requested by such Persons, to confirm such advice in writing, (A) when the Prospectus or any Prospectus supplement or post-effective amendment has been filed, and, with respect to any Registration Statement or any post-effective amendment thereto, when the same has become effective, (B) of any request by the Commission for amendments to the Registration Statement or amendments or supplements to the Prospectus or for additional information relating thereto, (C) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement under the Securities Act or of the suspension by any state securities commission of the qualification of the Transfer Restricted Securities for offering or sale in any jurisdiction, or the initiation of any proceeding for any of the preceding purposes, (D) of the existence of any fact or the happening of any event that makes any statement of a material fact made in the Registration Statement, the Prospectus, any amendment or supplement thereto, or any document incorporated by reference therein untrue, or that requires the making of any additions to or changes in the Registration Statement or the Prospectus in order to make the statements therein not misleading. If at any time the Commission shall issue any stop order suspending the effectiveness of the Registration Statement, or any state securities commission or other regulatory authority shall issue an order suspending the qualification or exemption from qualification of the Transfer Restricted Securities under state

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securities or blue sky laws, each of the Company and the Guarantors shall use its reasonable best efforts to obtain the withdrawal or lifting of such order at the earliest possible time;

     (iv) furnish without charge to each of the Initial Purchasers, each selling Holder named in any Registration Statement, and each of the underwriter(s), if any, before filing with the Commission, copies of any Registration Statement or any Prospectus included therein or any amendments or supplements to any such Registration Statement or Prospectus (including all documents incorporated by reference after the initial filing of such Registration Statement), which documents will be subject to the review and comment of such Holders and underwriter(s) in connection with such sale, if any, for a period of at least three Business Days, and the Company will not file any such Registration Statement or Prospectus or any amendment or supplement to any such Registration Statement or Prospectus (including all such documents incorporated by reference) to which an Initial Purchaser of Transfer Restricted Securities covered by such Registration Statement or the underwriter(s), if any, shall reasonably object in writing within three Business Days after the receipt thereof (such objection to be deemed timely made upon confirmation of telecopy transmission within such period). The objection of an Initial Purchaser or underwriter, if any, shall be deemed to be reasonable if such Registration Statement, amendment, Prospectus or supplement, as applicable, as proposed to be filed, contains a material misstatement or omission;

     (v) promptly prior to the filing of any document that is to be incorporated by reference into a Registration Statement or Prospectus, provide copies of such document to the Initial Purchasers, each selling Holder named in any Registration Statement, and to the underwriter(s), if any, make the Company’s and the Guarantors’ management, officers and other representatives available for discussion of such document and other customary due diligence matters, and include such information in such document prior to the filing thereof as such selling Holders or underwriter(s), if any, reasonably may request;

     (vi) make available at reasonable times for inspection by the Initial Purchasers, the managing underwriter(s), if any, participating in any disposition pursuant to such Registration Statement and any attorney or accountant retained by such Initial Purchasers or any of the underwriter(s), all financial and other records, pertinent corporate documents and properties of each of the Company and the Guarantors and cause the Company’s and the Guarantors’ officers, directors and employees to supply all information reasonably requested by any such Holder, underwriter, attorney or accountant in connection with such Registration Statement or any post-effective amendment thereto subsequent to the filing thereof and prior to its effectiveness and to participate in meetings with investors to the extent requested by any Holder, the Initial Purchasers or the managing underwriter(s), if any;

     (vii) if requested by any selling Holders or the underwriter(s), if any, promptly incorporate in any Registration Statement or Prospectus, pursuant to a supplement or post-effective amendment if necessary, such information as such selling Holders and underwriter(s), if any, may reasonably request to have included therein, including,

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without limitation, information relating to the “Plan of Distribution” of the Transfer Restricted Securities, information with respect to the principal amount of Transfer Restricted Securities being sold to such underwriter(s), the purchase price being paid therefor and any other terms of the offering of the Transfer Restricted Securities to be sold in such offering; and make all required filings of such Prospectus supplement or post-effective amendment as soon as practicable after the Company is notified of the matters to be incorporated in such Prospectus supplement or post-effective amendment;

     (viii) cause the Transfer Restricted Securities covered by the Registration Statement to be rated with the appropriate rating agencies, if so requested by the Holders of a majority in aggregate principal amount of Securities covered thereby or the underwriter(s), if any;

     (ix) furnish to each selling Holder and each of the underwriter(s), if any, without charge, at least one copy of the Registration Statement, as first filed with the Commission, and of each amendment thereto, including financial statements and schedules, all documents incorporated by reference therein and all exhibits (including exhibits incorporated therein by reference);

     (x) deliver to each selling Holder and each of the underwriter(s), if any, without charge, as many copies of the Prospectus (including each preliminary prospectus) and any amendment or supplement thereto as such Persons reasonably may request; each of the Company and the Guarantors hereby consents to the use of the Prospectus and any amendment or supplement thereto by each of the selling Holders and each of the underwriter(s), if any, in connection with the offering and the sale of the Transfer Restricted Securities covered by the Prospectus or any amendment or supplement thereto;

     (xi) enter into such agreements (including an underwriting agreement), and make such representations and warranties, and take all such other actions in connection therewith in order to expedite or facilitate the disposition of the Transfer Restricted Securities pursuant to any Registration Statement contemplated by this Agreement, all to such extent as may be requested by any Holder of Transfer Restricted Securities or underwriter in connection with any sale or resale pursuant to any Registration Statement contemplated by this Agreement; and whether or not an underwriting agreement is entered into and whether or not the registration is an Underwritten Registration, each of the Company and the Guarantors shall:

     (A) furnish to each Initial Purchaser, each selling Holder and each underwriter, if any, in such substance and scope as they may request and as are customarily made by issuers to underwriters in primary underwritten offerings, upon the date of the Consummation of the Exchange Offer and, if applicable, the effectiveness of the Shelf Registration Statement:

     (1) a certificate, dated the date of Consummation of the Exchange Offer or the date of effectiveness of the Shelf Registration Statement, as the case may be, signed by (y) the President or any Vice President and (z) a principal financial or accounting officer of each of the Company and the

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Guarantors, confirming, as of the date thereof, the matters set forth in paragraphs (i), (ii) and (iii) of Section 5(e) of the Purchase Agreement and such other matters as such parties may reasonably request;

     (2) an opinion, dated the date of Consummation of the Exchange Offer or the date of effectiveness of the Shelf Registration Statement, as the case may be, of counsel for the Company and the Guarantors, covering the matters set forth in Section 5(c) of the Purchase Agreement and such other matter as such parties may reasonably request, and in any event including a statement to the effect that such counsel has participated in conferences with officers and other representatives of the Company and the Guarantors, representatives of the independent public accountants for the Company and the Guarantors, representatives of the underwriter(s), if any, and counsel to the underwriter(s), if any, in connection with the preparation of such Registration Statement and the related Prospectus and have considered the matters required to be stated therein and the statements contained therein, although such counsel has not independently verified the accuracy, completeness or fairness of such statements; and that such counsel advises that, on the basis of the foregoing, no facts came to such counsel’s attention that caused such counsel to believe that the applicable Registration Statement, at the time such Registration Statement or any post-effective amendment thereto became effective, and, in the case of the Exchange Offer Registration Statement, as of the date of Consummation, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, or that the Prospectus contained in such Registration Statement as of its date and, in the case of the opinion dated the date of Consummation of the Exchange Offer, as of the date of Consummation, contained an untrue statement of a material fact or omitted to state a material fact necessary in order to make the statements therein not misleading. Without limiting the foregoing, such counsel may state further that such counsel assumes no responsibility for, and has not independently verified, the accuracy, completeness or fairness of the financial statements, notes and schedules and other financial data and statistical data derived from such financial statements, notes and schedules and other financial, oil and gas reserves or prospects or production data included in any Registration Statement contemplated by this Agreement or the related Prospectus; and

     (3) a customary comfort letter, dated the date of effectiveness of the Shelf Registration Statement, from the Company’s independent accountants, in the customary form and covering matters of the type customarily requested to be covered in comfort letters by underwriters in connection with primary underwritten offerings, and covering or affirming the matters set forth in the comfort letters delivered pursuant to Section 5(a) of the Purchase Agreement, without exception;

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     (B) set forth in full or incorporate by reference in the underwriting agreement, if any, the indemnification provisions and procedures of Section 9 hereof with respect to all parties to be indemnified pursuant to said Section; and

     (C) deliver such other documents and certificates as may be reasonably requested by such parties to evidence compliance with Section 7(c)(xi)(A) hereof and with any customary conditions contained in the underwriting agreement or other agreement entered into by the Company or any of the Guarantors pursuant to this Section 7(c)(xi), if any.

     If at any time the representations and warranties of the Company and the Guarantors contemplated in Section 7(c)(xi)(A)(1) hereof cease to be true and correct, the Company or the Guarantors shall so advise the Initial Purchasers and the underwriter(s), if any, and each selling Holder promptly and, if requested by such Persons, shall confirm such advice in writing;

     (xii) prior to any public offering of Transfer Restricted Securities, cooperate with the selling Holders, the underwriter(s), if any, and their respective counsel in connection with the registration and qualification of the Transfer Restricted Securities under the state securities or blue sky laws of such jurisdictions as the selling Holders or underwriter(s), if any, may request and do any and all other acts or things necessary or advisable to enable the disposition in such jurisdictions of the Transfer Restricted Securities covered by the Shelf Registration Statement; provided, however, that none of the Company or the Guarantors shall be required to register or qualify as a foreign corporation where it is not then so qualified or to take any action that would subject it to the service of process in suits or to taxation, other than as to matters and transactions relating to the Registration Statement, in any jurisdiction where it is not then so subject;

     (xiii) shall issue, upon the request of any Holder of Initial Securities covered by the Exchange Offer Registration Statement, Exchange Securities having an aggregate principal amount equal to the aggregate principal amount of Initial Securities surrendered to the Company by such Holder in exchange therefor or being sold by such Holder; such Exchange Securities to be registered in the name of such Holder or in the name of the purchaser(s) of such Exchange Securities, as the case may be; in return, the Initial Securities held by such Holder shall be surrendered to the Company for cancellation;

     (xiv) cooperate with the selling Holders and the underwriter(s), if any, to facilitate the timely preparation and delivery of certificates representing Transfer Restricted Securities to be sold and not bearing any restrictive legends; and enable such Transfer Restricted Securities to be in such denominations and registered in such names as the Holders or the underwriter(s), if any, may request at least two Business Days prior to any sale of Transfer Restricted Securities made by such Holders or underwriter(s);

     (xv) use its reasonable best efforts to cause the Transfer Restricted Securities covered by the Registration Statement to be registered with or approved by such other governmental agencies or authorities as may be necessary to enable the seller or sellers

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thereof or the underwriter(s), if any, to consummate the disposition of such Transfer Restricted Securities, subject to the proviso contained in Section 7(c)(xii) hereof;

     (xvi) if any fact or event contemplated by Section 7(c)(iii)(D) hereof shall exist or have occurred, prepare a supplement or post-effective amendment to the Registration Statement or related Prospectus or any document incorporated therein by reference or file any other required document so that, as thereafter delivered to the purchasers of Transfer Restricted Securities, the Prospectus will not contain an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein not misleading;

     (xvii) provide a CUSIP number for all Transfer Restricted Securities not later than the effective date of the Registration Statement covering such Transfer Restricted Securities and provide the Trustee under the Indenture with printed certificates for such Transfer Restricted Securities which are in a form eligible for deposit with the Depository Trust Company and take all other reasonable action necessary to ensure that all such Transfer Restricted Securities are eligible for deposit with the Depository Trust Company;

     (xviii) cooperate and assist in any filings required to be made with the NASD and in the performance of any due diligence investigation by any underwriter (including any “qualified independent underwriter”) that is required to be retained in accordance with the rules and regulations of the NASD, and use its reasonable best efforts to cause such Registration Statement to become effective and approved by such governmental agencies or authorities as may be necessary to enable the Holders selling Transfer Restricted Securities to consummate the disposition of such Transfer Restricted Securities;

     (xix) otherwise use its reasonable best efforts to comply with all applicable rules and regulations of the Commission, and make generally available to its security holders, as soon as practicable, a consolidated earnings statement meeting the requirements of Rule 158 (which need not be audited) for the twelve-month period (A) commencing at the end of any fiscal quarter in which Transfer Restricted Securities are sold to underwriters in a firm commitment or best efforts Underwritten Offering or (B) if not sold to underwriters in such an offering, beginning with the first month of the Company’s first fiscal quarter commencing after the effective date of the Registration Statement;

     (xx) cause the Indenture to be qualified under the Trust Indenture Act not later than the effective date of the first Registration Statement required by this Agreement, and, in connection therewith, cooperate with the Trustee and the Holders of Securities to effect such changes to the Indenture as may be required for such Indenture to be so qualified in accordance with the terms of the Trust Indenture Act; and to execute and use its reasonable best efforts to cause the Trustee to execute, all documents that may be required to effect such changes and all other forms and documents required to be filed with the Commission to enable such Indenture to be so qualified in a timely manner;

     (xxi) cause all Securities covered by the Registration Statement to be listed on each securities exchange or automated quotation system on which similar securities

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issued by the Company are then listed if requested by the Holders of a majority in aggregate principal amount of Initial Securities or the managing underwriter(s), if any; and

     (xxii) provide promptly to each Holder upon request each document filed with the Commission pursuant to the requirements of Section 13 and Section 15 of the Exchange Act.

     Each Holder agrees by acquisition of a Transfer Restricted Security that, upon receipt of any notice from the Company of the existence of any fact of the kind described in Section 7(c)(iii)(D) hereof, such Holder will forthwith discontinue disposition of Transfer Restricted Securities pursuant to the applicable Registration Statement until such Holder’s receipt of the copies of the supplemented or amended Prospectus contemplated by Section 7(c)(xvi) hereof, or until it is advised in writing (the “Advice”) by the Company that the use of the Prospectus may be resumed, and has received copies of any additional or supplemental filings that are incorporated by reference in the Prospectus. If so directed by the Company, each Holder will deliver to the Company (at the Company’s expense) all copies, other than permanent file copies then in such Holder’s possession, of the Prospectus covering such Transfer Restricted Securities that was current at the time of receipt of such notice. In the event the Company shall give any such notice, the time period regarding the effectiveness of such Registration Statement set forth in Section 3 or 4 hereof, as applicable, shall be extended by the number of days during the period from and including the date of the giving of such notice pursuant to Section 7(c)(iii)(D) hereof to and including the date when each selling Holder covered by such Registration Statement shall have received the copies of the supplemented or amended Prospectus contemplated by Section 7(c)(xvi) hereof or shall have received the Advice; provided, however, that no such extension shall be taken into account in determining whether Additional Interest is due pursuant to Section 5 hereof or the amount of such Additional Interest, it being agreed that the Company’s option to suspend use of a Registration Statement pursuant to this paragraph shall be treated as a Registration Default for purposes of Section 5 hereof.

     Section 8. Registration Expenses.

     (a) All expenses incident to the Company’s and the Guarantors’ performance of or compliance with this Agreement will be borne by the Company and the Guarantors jointly and severally, regardless of whether a Registration Statement becomes effective, including, without limitation: (i) all registration and filing fees and expenses (including filings made by any Initial Purchaser or Holder with the NASD (and, if applicable, the fees and expenses of any “qualified independent underwriter” and its counsel that may be required by the rules and regulations of the NASD)); (ii) all fees and expenses of compliance with federal securities and state securities or blue sky laws; (iii) all expenses of printing (including printing certificates for the Exchange Securities to be issued in the Exchange Offer and printing of Prospectuses), messenger and delivery services and telephone; (iv) all fees and disbursements of counsel for the Company, the Guarantors and, subject to Section 8(b) hereof, the Holders of Transfer Restricted Securities; (v) all application and filing fees in connection with listing the Exchange Securities on a securities exchange or automated quotation system pursuant to the requirements thereof; and (vi) all fees and disbursements of independent certified public accountants of the Company and the

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Guarantors (including the expenses of any special audit and comfort letters required by or incident to such performance).

     Each of the Company and the Guarantors will, in any event, bear its internal expenses (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expenses of any annual audit and the fees and expenses of any Person, including special experts, retained by the Company or the Guarantors.

     (b) In connection with any Registration Statement required by this Agreement (including, without limitation, the Exchange Offer Registration Statement and the Shelf Registration Statement), the Company and the Guarantors, jointly and severally, will reimburse the Holders of Transfer Restricted Securities being tendered in the Exchange Offer and/or resold pursuant to the “Plan of Distribution” contained in the Exchange Offer Registration Statement or registered pursuant to the Shelf Registration Statement, as applicable, for the reasonable fees and disbursements of not more than one counsel, who shall be Fried, Frank, Harris, Shriver & Jacobson LLP or such other counsel as may be chosen by the Holders of a majority in principal amount of the Transfer Restricted Securities for whose benefit such Registration Statement is being prepared.

     Section 9. Indemnification.

     (a) The Company and the Guarantors, jointly and severally, agree to indemnify and hold harmless (i) each Holder (including, without limitation, the Initial Purchasers and the Market-Maker) and (ii) each Person, if any, who controls (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) any Holder (any of the Persons referred to in this clause (ii) being hereinafter referred to as a “controlling person”) and (iii) the respective officers, directors, partners, employees, representatives and agents of any Holder or any controlling person (any Person referred to in clause (i), (ii) or (iii) may hereinafter be referred to as an “Indemnified Holder”), to the fullest extent lawful, from and against any and all losses, claims, damages, liabilities, judgments, actions and expenses (including, without limitation, and as incurred, reimbursement of all reasonable costs of investigating, preparing, pursuing, settling, compromising, paying or defending any claim or action, or any investigation or proceeding by any governmental agency or body, commenced or threatened, including the reasonable fees and expenses of counsel to any Indemnified Holder), joint or several, directly or indirectly caused by, related to, based upon, arising out of or in connection with any untrue statement or alleged untrue statement of a material fact contained in any Registration Statement (including the Rule 430B Information) or Prospectus (or any amendment or supplement thereto) or any Issuer Free Writing Prospectus (or any amendment or supplement thereto), or any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, or, in the case of the Market-Maker, any breach by the Company or the Guarantors of their representations, warranties and agreements contained in Section 6 hereof, except insofar as such losses, claims, damages, liabilities or expenses are caused by an untrue statement or omission or alleged untrue statement or omission that is made in reliance upon and in conformity with information relating to any of the Holders furnished in writing to the Company by any of the Holders expressly for use therein. This indemnity agreement shall be in addition to any liability which the Company or any of the Guarantors may otherwise have.

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     In case any action or proceeding (including any governmental or regulatory investigation or proceeding) shall be brought or asserted against any of the Indemnified Holders with respect to which indemnity may be sought against the Company or the Guarantors, such Indemnified Holder (or the Indemnified Holder controlled by such controlling person) shall promptly notify the Company and the Guarantors in writing; provided, however, that the failure to give such notice shall not relieve any of the Company or the Guarantors of its obligations pursuant to this Agreement. Such Indemnified Holder shall have the right to employ its own counsel in any such action and the fees and expenses of such counsel shall be paid, as incurred, by the Company and the Guarantors (regardless of whether it is ultimately determined that an Indemnified Holder is not entitled to indemnification hereunder). The Company and the Guarantors shall not, in connection with any one such action or proceeding or separate but substantially similar or related actions or proceedings in the same jurisdiction arising out of the same general allegations or circumstances, be liable for the reasonable fees and expenses of more than one separate firm of attorneys (in addition to any local counsel) at any time for such Indemnified Holders, which firm shall be designated by the Holders. The Company and the Guarantors shall be liable for any settlement of any such action or proceeding effected with the Company’s and the Guarantors’ prior written consent, which consent shall not be withheld unreasonably, and each of the Company and the Guarantors agrees to indemnify and hold harmless any Indemnified Holder from and against any loss, claim, damage, liability or expense by reason of any settlement of any action effected with the written consent of the Company and the Guarantors. The Company and the Guarantors shall not, without the prior written consent of each Indemnified Holder, settle or compromise or consent to the entry of judgment in or otherwise seek to terminate any pending or threatened action, claim, litigation or proceeding in respect of which indemnification or contribution may be sought hereunder (whether or not any Indemnified Holder is a party thereto), unless such settlement, compromise, consent or termination includes an unconditional release of each Indemnified Holder from all liability arising out of such action, claim, litigation or proceeding.

     (b) Each Holder of Transfer Restricted Securities agrees, severally and not jointly, to indemnify and hold harmless the Company, the Guarantors and their respective directors, officers of the Company and the Guarantors who sign a Registration Statement, and any Person controlling (within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act) the Company or any of the Guarantors, and the respective officers, directors, partners, employees, representatives and agents of each such Person, to the same extent as the foregoing indemnity from the Company and the Guarantors to each of the Indemnified Holders, but only with respect to claims and actions based on information relating to such Holder furnished in writing by such Holder expressly for use in any Registration Statement. In case any action or proceeding shall be brought against the Company, the Guarantors or their respective directors or officers or any such controlling person in respect of which indemnity may be sought against a Holder of Transfer Restricted Securities, such Holder shall have the rights and duties given the Company and the Guarantors, and the Company, the Guarantor, their respective directors and officers and such controlling person shall have the rights and duties given to each Holder by the preceding paragraph.

     (c) If the indemnification provided for in this Section 9 is unavailable to an indemnified party under Section 9(a) or (b) hereof (other than by reason of exceptions provided in those Sections) in respect of any losses, claims, damages, liabilities, judgments, actions or expenses

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referred to therein, then each applicable indemnifying party, in lieu of indemnifying such indemnified party, shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages, liabilities or expenses in such proportion as is appropriate to reflect the relative benefits received by the Company and the Guarantors, on the one hand, and the Holders, on the other hand, from the Initial Placement (which in the case of the Company and the Guarantors shall be deemed to be equal to the total gross proceeds to the Company and the Guarantors from the Initial Placement), the amount of Additional Interest which did not become payable as a result of the filing of the Registration Statement resulting in such losses, claims, damages, liabilities, judgments actions or expenses, and such Registration Statement, or if such allocation is not permitted by applicable law, the relative fault of the Company and the Guarantors, on the one hand, and the Holders, on the other hand, in connection with the statements or omissions which resulted in such losses, claims, damages, liabilities or expenses, as well as any other relevant equitable considerations. The relative fault of the Company and the Guarantors on the one hand and of the Indemnified Holder on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or any of the Guarantors, on the one hand, or the Indemnified Holders, on the other hand, and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The amount paid or payable by a party as a result of the losses, claims, damages, liabilities and expenses referred to above shall be deemed to include, subject to the limitations set forth in the second paragraph of Section 9(a) hereof, any legal or other fees or expenses reasonably incurred by such party in connection with investigating or defending any action or claim.

     The Company, the Guarantors and each Holder of Transfer Restricted Securities agree that it would not be just and equitable if contribution pursuant to this Section 9(c) were determined by pro rata allocation (even if the Holders were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to in the immediately preceding paragraph. The amount paid or payable by an indemnified party as a result of the losses, claims, damages, liabilities or expenses referred to in the immediately preceding paragraph shall be deemed to include, subject to the limitations set forth above, any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this Section 9, none of the Holders (and its related Indemnified Holders) shall be required to contribute, in the aggregate, any amount in excess of the amount by which the total discount received by such Holder with respect to the Initial Securities exceeds the amount of any damages which such Holder has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No Person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to contribution from any Person who was not guilty of such fraudulent misrepresentation. The Holders’ obligations to contribute pursuant to this Section 9(c) are several in proportion to the respective principal amount of Initial Securities held by each of the Holders hereunder and not joint.

     Section 10. Rule 144A. Each of the Company and the Guarantors hereby agrees with each Holder, for so long as any Transfer Restricted Securities remain outstanding, to make available to any Holder or beneficial owner of Transfer Restricted Securities in connection with

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any sale thereof and any prospective purchaser of such Transfer Restricted Securities from such Holder or beneficial owner, the information required by Rule 144A(d)(4) under the Securities Act in order to permit resales of such Transfer Restricted Securities pursuant to Rule 144A under the Securities Act.

     Section 11. Participation in Underwritten Registrations. No Holder may participate in any Underwritten Registration hereunder unless such Holder (a) agrees to sell such Holder’s Transfer Restricted Securities on the basis provided in any underwriting arrangements approved by the Persons entitled hereunder to approve such arrangements and (b) completes and executes all reasonable questionnaires, powers of attorney, indemnities, underwriting agreements, lock-up letters and other documents required under the terms of such underwriting arrangements.

     Section 12. Selection of Underwriters. The Holders of Transfer Restricted Securities covered by the Shelf Registration Statement who desire to do so may sell such Transfer Restricted Securities in an Underwritten Offering. In any such Underwritten Offering, the investment banker(s) and managing underwriter(s) that will administer such offering will be selected by the Holders of a majority in aggregate principal amount of the Transfer Restricted Securities included in such offering; provided, however, that such investment banker(s) and managing underwriter(s) must be reasonably satisfactory to the Company.

     Section 13. Miscellaneous.

     (a) Remedies. Each of the Company and the Guarantors hereby agrees that monetary damages would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Agreement and hereby agree to waive the defense in any action for specific performance that a remedy at law would be adequate.

     (b) No Inconsistent Agreements. Each of the Company and the Guarantors will not on or after the date of this Agreement enter into any agreement with respect to its securities that is inconsistent with the rights granted to the Holders in this Agreement or otherwise conflicts with the provisions hereof. Neither the Company nor any of the Guarantors has previously entered into any agreement granting any registration rights with respect to its securities to any Person. The rights granted to the Holders hereunder do not in any way conflict with and are not inconsistent with the rights granted to the holders of the Company’s or any of the Guarantors’ securities under any agreement in effect on the date hereof.

     (c) Adjustments Affecting the Securities. The Company will not take any action, or permit any change to occur, with respect to the Securities that would materially and adversely affect the ability of the Holders to Consummate any Exchange Offer.

     (d) Amendments and Waivers. The provisions of this Agreement may not be amended, modified or supplemented, and waivers or consents to or departures from the provisions hereof may not be given unless the Company has (i) in the case of Section 5 hereof and this Section 13(d)(i), obtained the written consent of Holders of all outstanding Transfer Restricted Securities and (ii) in the case of all other provisions hereof, obtained the written consent of Holders of a majority of the outstanding principal amount of Transfer Restricted Securities (excluding any Transfer Restricted Securities held by the Company or its Affiliates). Notwithstanding the

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foregoing, a waiver or consent to departure from the provisions hereof that relates exclusively to the rights of Holders whose securities are being tendered pursuant to the Exchange Offer and that does not affect directly or indirectly the rights of other Holders whose securities are not being tendered pursuant to such Exchange Offer may be given by the Holders of a majority of the outstanding principal amount of Transfer Restricted Securities being tendered or registered; provided, however, that, with respect to any matter that directly or indirectly affects the rights of any Initial Purchaser hereunder, the Company shall obtain the written consent of each such Initial Purchaser with respect to which such amendment, qualification, supplement, waiver, consent or departure is to be effective. Any amendments, modifications, supplements, waivers or consents pursuant to Section 6 or any related sections shall require the written consent of the Market-Maker.

     (e) Notices. All notices and other communications provided for or permitted hereunder shall be made in writing by hand-delivery, first-class mail (registered or certified, return receipt requested), telex, telecopier, or air courier guaranteeing overnight delivery:

     (i) if to a Holder, at the address set forth on the records of the Registrar under the Indenture, with a copy to the Registrar under the Indenture;

     (ii) if to the Market-Maker:

Credit Suisse Securities (USA) LLC
1100 Louisiana Street
Houston, TX 77002
Phone: (713) 890-1400
Facsimile: (713) 890-1650
Attention: Phillip Pace
                    Managing Director

and

     (iii) if to the Company and the Guarantors:

6300 Bridge Point Parkway
Building 2, Suite 500
Austin, TX 78730
Phone: (512) 427-3300
Facsimile: (512) 427-3400

Attention: Warren Ludlow
                    General Counsel

With a copy to:

Thompson & Knight LLP
1700 Pacific Avenue, Suite 3300
Dallas, Texas 75201

Facsimile: (214) 969-1751
Attention: Joe Dannenmaier

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     All such notices and communications shall be deemed to have been duly given: at the time delivered by hand, if personally delivered; five Business Days after being deposited in the mail, postage prepaid, if mailed; when answered back, if telexed; when receipt acknowledged, if telecopied; and on the next Business Day, if timely delivered to an air courier guaranteeing overnight delivery.

     Copies of all such notices, demands or other communications shall be concurrently delivered by the Person giving the same to the Trustee at the address specified in the Indenture.

     (f) Successors and Assigns. This Agreement shall inure to the benefit of and be binding upon the successors and assigns of each of the parties, including, without limitation, and without the need for an express assignment, subsequent Holders of Transfer Restricted Securities; provided, however, that this Agreement shall not inure to the benefit of or be binding upon a successor or assign of a Holder unless and to the extent such successor or assign acquired Transfer Restricted Securities from such Holder.

     (g) Counterparts. This Agreement may be executed in any number of counterparts and by the parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement.

     (h) Headings. The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.

     (i) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO THE CONFLICTS OF LAW RULES THEREOF.

     (j) Severability. In the event that any one or more of the provisions contained herein, or the application thereof in any circumstance, is held invalid, illegal or unenforceable, the validity, legality and enforceability of any such provision in every other respect and of the remaining provisions contained herein shall not be affected or impaired thereby.

     (k) Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and intended to be a complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained herein. There are no restrictions, promises, warranties or undertakings, other than those set forth or referred to herein with respect to the registration rights granted by the Company with respect to the Transfer Restricted Securities. This Agreement supersedes all prior agreements and understandings between the parties with respect to such subject matter.

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     IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

BRIGHAM EXPLORATION COMPANY, a Delaware corporation
By:	/s/ Eugene B. Shepherd, Jr.
	Name: Eugene B. Shepherd, Jr.
	Title: Chief Financial Officer
BRIGHAM, INC., a Nevada corporation
By:	/s/ Eugene B. Shepherd, Jr.
	Name: Eugene B. Shepherd, Jr.
	Title: Chief Financial Officer
BRIGHAM OIL & GAS, L.P., a Delaware limited partnership
By:	BRIGHAM, INC.,
	Its managing general partner
By:	/s/ Eugene B. Shepherd, Jr.
	Name: Eugene B. Shepherd, Jr.
	Title: Chief Financial Officer

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     The foregoing Registration Rights Agreement is hereby confirmed and accepted as of the date first above written:

BANC OF AMERICA SECURITIES LLC
CREDIT SUISSE SECURITIES (USA) LLC
GREENWICH CAPITAL MARKETS, INC.
BNP PARIBAS SECURITIES CORP.
HIBERNIA SOUTH COAST CAPITAL, INC.
NATEXIS BLEICHROEDER, INC.

By: Banc of America Securities LLC

By:	/s/ Lex Maultsby
	Name: Lex Maultsby
	Title: Managing Director

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EX-10.3

EXHIBIT 10.3

FIRST AMENDMENT

     This FIRST AMENDMENT (“Amendment”), dated as of April 10, 2006 (the “Effective Date”), is by and among Brigham Oil & Gas, L.P., a Delaware limited partnership (the “Borrower”), Brigham Exploration Company, a Delaware corporation (“Brigham Exploration”), Brigham Inc., a Nevada corporation (the “General Partner”, together with Brigham Exploration, each a “Guarantor” and collectively the “Guarantors”, and together with Brigham Exploration and the Borrower, each a “Credit Party” and collectively the “Credit Parties”), the Lenders party hereto, and Bank of America, N.A., as administrative agent for the Lenders (in such capacity, the “Administrative Agent”).

     WHEREAS, the Borrower, the Guarantors, the lenders from time to time party thereto (the “Lenders”), and the Administrative Agent are parties to the Fourth Amended and Restated Credit Agreement, dated as of June 29, 2005 (the “Credit Agreement”);

     WHEREAS, Brigham Exploration desires to issue up to $125,000,000 of senior unsecured notes (the “Senior Note Issuance”);

     WHEREAS, the Senior Note Issuance is not permitted under Section 6.02 of the Credit Agreement;

     NOWTHEREFORE, in consideration of the premises and the mutual covenants, representations and warranties contained herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follows:

AGREEMENT

     Section 1. Defined Terms. Unless otherwise defined in this Amendment, each capitalized term used in this Amendment has the meaning given such term in the Credit Agreement.

     Section 2. Amendment of the Credit Agreement.

          (a) Section 1.01 of the Credit Agreement is hereby amended by (i) replacing the definition of “Guarantor” with the following definition of such term and (ii) adding the following new definitions in appropriate alphabetical order:

     “Guarantor” means Brigham Exploration, the General Partner, each Subsidiary of the Borrower, and each other Subsidiary of Brigham Exploration (if any) that becomes a guarantor of the Obligations as contemplated in Section 5.12.

     “Permitted Senior Notes” means senior unsecured notes issued by Brigham Exploration pursuant to one or more Senior Note Indentures in compliance with Section 6.02(l).

     “Senior Note Indenture” means an indenture among Brigham Exploration, as issuer, the Borrower, as a guarantor, any other guarantors party thereto and a

trustee, pursuant to which Permitted Senior Notes are issued, as amended or supplemented as permitted by Section 6.23.

             (b) Section 6.02 of the Credit Agreement is hereby amended by deleting “and” at the end of subsection (j) thereof, deleting “.” at the end of subsection (k) thereof and replacing it with “; and”, and adding a new subsection (l) as follows:

      (l) Debt of Brigham Exploration under Permitted Senior Notes and any guarantees thereof by the Borrower and the Guarantors, provided that: (i) immediately before, and after giving effect to, the incurrence of any such Debt, no Event of Default exists or would exist, (ii) the cash pay interest rate on such Permitted Senior Notes is less than 10% per annum (or otherwise reasonably satisfactory to the Administrative Agent), (iii) such Permitted Senior Notes do not prohibit prior repayment of Advances, (iv) such Permitted Senior Notes are not secured and do not impose any financial ratio maintenance covenants that are materially more restrictive or burdensome to the Credit Parties than the terms and provisions of the Loan Documents as in effect from time to time, (v) at the time any such Permitted Senior Notes are issued, the Borrowing Base then in effect shall be automatically reduced to $50,000,000, and the Borrowing Base as so reduced shall become the new Borrowing Base immediately upon the date of such issuance, effective and applicable to the Borrower, the Agents, each Issuing Bank and the Lenders on such date until the next redetermination or modification thereof hereunder, and (vi) the stated aggregate principal amount of such Permitted Senior Notes may not exceed $125,000,000. (For purposes of this Section 6.02(l), the “stated aggregate principal amount” shall mean the stated face amount of the Permitted Senior Notes without giving effect to any original issue discount). In addition, to the extent that the terms of such Permitted Senior Notes require any scheduled payment on account of principal (whether by redemption, purchase, retirement, defeasance, set-off or otherwise) prior to the Maturity Date, such terms must also provide that payments or prepayments of principal on the Advances may, at the election of Brigham Exploration, be made prior to making of any such scheduled payment on the Permitted Senior Notes. Brigham Exploration hereby agrees that, unless otherwise permitted by the Majority Lenders, it will exercise such election and not make any such scheduled payment on the Permitted Senior Notes unless the Advances have first been paid in full and the Letter of Credit Exposure has been Cash Collateralized and the Borrower has agreed that it will not request any further Advances until the Borrowing Base has been redetermined.

      (c) A new Section 6.23 of the Credit Agreement is hereby added as follows:

      Section 6.23. Permitted Senior Notes.

      (a) No Credit Party may make any optional, mandatory or scheduled payments or prepayments on account of principal (whether by redemption, purchase, retirement, defeasance, set-off or otherwise) in respect of any Permitted Senior Notes issued pursuant to Section 6.02(l) prior to the Maturity Date unless

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(i) otherwise permitted by the Majority Lenders, or (ii) (A) the Advances have first been paid in full and the Letter of Credit Exposure has been Cash Collateralized and (B) the Borrower has agreed that it will not request any further Advances until the Borrowing Base has been redetermined; provided nothing in this Section 6.23 shall prohibit (x) any payment of interest, including by payment in kind or by compounding or (y) the payment of any fees or expenses, including, without limitation, any underwriting or initial purchasers’ discount, in connection with the issuance of the Permitted Senior Notes.

     (b) No Credit Party shall amend, supplement or otherwise modify the terms of any Senior Note Indenture if such amendment, supplement or other modification would not be permitted by the terms of Section 6.02(l).

     (c) Brigham Exploration shall use the proceeds of the Permitted Senior Notes to repay and retire the indebtedness outstanding under the Subordinated Credit Agreement.

     Section 3. Conditions to Effectiveness. This Amendment shall become effective as of the Effective Date when the Administrative Agent shall have received counterparts hereof duly executed by the Borrower, each Guarantor, the Administrative Agent and the Majority Lenders.

     Section 4. Representations and Warranties. Each Credit Party hereby represents and warrants that after giving effect hereto:

               (a) the representations and warranties of such Credit Party contained in the Loan Documents are true and correct in all material respects on and as of the Effective Date and will be true and correct as of the date of the Senior Note Issuance, after giving effect to the Senior Note Issuance, other than those representations and warranties that expressly relate solely to a specific earlier date, which shall remain correct as of such earlier date; and

               (b) no Default or Event of Default has occurred and is continuing.

     Section 5. Governing Law. THIS AMENDMENT SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND THE APPLICABLE LAWS OF THE UNITED STATES OF AMERICA.

     Section 6. Counterparts. This Amendment may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute one and the same agreement. Transmission by facsimile of an executed counterpart of this Amendment shall be deemed to constitute due and sufficient delivery of such counterpart.

[Remainder of Page Intentionally Left Blank]

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     INWITNESSWHEREOF, the parties hereto have caused this Amendment to be duly executed and delivered by their respective duly authorized officers as of the Effective Date.

BORROWER: BRIGHAM OIL & GAS, L.P.
By:	Brigham, Inc., its general partner
By:	/s/ Warren J. Ludlow.
	Warren J. Ludlow
	Secretary
GUARANTORS: BRIGHAM EXPLORATION COMPANY
By:	/s/ Warren J. Ludlow.
	Warren J. Ludlow
	Secretary
BRIGHAM, INC.
By:	/s/ Warren J. Ludlow.
	Warren J. Ludlow
	Secretary

Signature Page to Amendment No. 1

ADMINISTRATIVE AGENT: BANK OF AMERICA, N.A., as Administrative Agent
By:	/s/ Matthew Correia
	Matthew C. Correia
	Assistant Vice President

Signature Page to Amendment No. 1

LENDERS: BANK OF AMERICA, N.A.
By:	/s/ Jeffrey Rathkamp
	Jeffrey H. Rathkamp
	Director

Signature Page to Amendment No. 1

THE ROYAL BANK OF SCOTLAND plc
By:	/s/ Scott L. Joyce
	Name:	Scott L. Joyce
	Title:	Vice President

Signature Page to Amendment No. 1

BNP PARIBAS
By:	/s/ Gabe Ellisor
	Name:	Gabe Ellisor
	Title:	Vice President
By:	/s/ Robert Long
	Name:	Robert Long
	Title:	Vice President

Signature Page to Amendment No. 1

NATEXIS BANQUES POPULAIRES
By:	/s/ Donovan C. Broussard
	Name:	Donovan C. Broussard
	Title:	Vice President and Group Manager
By:	/s/ Timothy L. Polvado
	Name:	Timothy L. Polvado
	Title:	Vice President and Group Manager

Signature Page to Amendment No. 1

HIBERNIA NATIONAL BANK
By:
	Name:
	Title:

Signature Page to Amendment No. 1