10-Q

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

[ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2011

OR

[    ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from             to            

Commission File Number 1-12744

MARTIN MARIETTA MATERIALS, INC.

(Exact name of registrant as specified in its charter)

North Carolina	56-1848578
(State or other jurisdiction of     incorporation or organization)	(I.R.S. Employer Identification Number)
2710 Wycliff Road, Raleigh, NC	27607-3033
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code                     919-781-4550                 

Former name:	None
	Former name, former address and former fiscal year,
	if changes since last report.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes þ             No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Yes þ                                          No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer þ	Accelerated filer ¨
Non-accelerated filer ¨	Smaller reporting company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ¨             No þ

Indicate the number of shares outstanding of each of the issuer’s classes of Common Stock, as of the latest practicable date.

Class	Outstanding as of October 21, 2011
Common Stock, $0.01 par value	45,696,740

Page 1 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

	Page
Part I. Financial Information:
Item 1. Financial Statements.
Consolidated Balance Sheets – September 30, 2011, December 31, 2010 and September 30, 2010		3
Consolidated Statements of Earnings - Three and Nine Months Ended September 30, 2011 and 2010		4
Consolidated Statements of Cash Flows - Nine Months Ended September 30, 2011 and 2010		5
Consolidated Statement of Total Equity		6
Condensed Notes to Consolidated Financial Statements		7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.		19
Item 3. Quantitative and Qualitative Disclosures About Market Risk.		42
Item 4. Controls and Procedures.		43
Part II. Other Information:
Item 1. Legal Proceedings.		44
Item 1A. Risk Factors.		44
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.		44
Item 5. Other Information.		45
Item 6. Exhibits.		49
Signatures		50
Exhibit Index		51

Page 2 of 51

PART I. FINANCIAL INFORMATION

Item 1.   Financial Statements.

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

	September 30, 2011		December 31, 2010		September 30, 2010
	(Unaudited)		(Audited)		(Unaudited)
	(Dollars in Thousands, Except Per Share Data)
ASSETS
Current Assets:
Cash and cash equivalents	$	56,840	$	70,323	$	60,499
Accounts receivable, net		259,773		183,361		249,613
Inventories, net		337,730		331,894		323,820
Current deferred income tax benefits		92,959		83,380		71,593
Other current assets		20,114		27,253		26,591
Total Current Assets		767,416		696,211		732,116
Property, plant and equipment		3,662,446		3,568,275		3,541,058
Allowances for depreciation, depletion and amortization		(1,975,805)		(1,880,445)		(1,847,852)
Net property, plant and equipment		1,686,641		1,687,830		1,693,206
Goodwill		639,039		626,527		624,224
Other intangibles, net		18,211		17,548		17,563
Other noncurrent assets		47,251		46,627		48,674
Total Assets	$	3,158,558	$	3,074,743	$	3,115,783
LIABILITIES AND EQUITY
Current Liabilities:
Bank overdraft	$	-	$	2,123	$	-
Accounts payable		86,322		60,333		76,993
Accrued salaries, benefits and payroll taxes		16,867		17,506		14,403
Pension and postretirement benefits		4,420		6,034		16,894
Accrued insurance and other taxes		31,902		23,535		32,409
Income taxes		16,256		174		-
Current maturities of long-term debt and short-term facilities		7,150		248,714		245,423
Accrued interest		18,709		12,045		27,231
Other current liabilities		16,120		15,029		13,482
Total Current Liabilities		197,746		385,493		426,835
Long-term debt		1,038,335		782,045		785,706
Pension, postretirement and postemployment benefits		102,787		127,671		144,574
Noncurrent deferred income taxes		249,572		228,698		216,844
Other noncurrent liabilities		84,567		82,577		84,596
Total Liabilities		1,673,007		1,606,484		1,658,555
Equity:
Common stock, par value $0.01 per share		456		455		454
Preferred stock, par value $0.01 per share		-		-		-
Additional paid-in capital		400,855		396,485		395,853
Accumulated other comprehensive loss		(49,560)		(53,660)		(67,249)
Retained earnings		1,094,469		1,082,160		1,085,750
Total Shareholders’ Equity		1,446,220		1,425,440		1,414,808
Noncontrolling interests		39,331		42,819		42,420
Total Equity		1,485,551		1,468,259		1,457,228
Total Liabilities and Equity	$	3,158,558	$	3,074,743	$	3,115,783

See accompanying condensed notes to consolidated financial statements.

Page 3 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENTS OF EARNINGS

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(In Thousands, Except Per Share Data)
	(Unaudited)
Net Sales	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Freight and delivery revenues		70,771		65,692		187,284		172,920
Total revenues		534,756		509,401		1,384,215		1,354,974
Cost of sales		352,520		329,900		967,873		930,906
Freight and delivery costs		70,771		65,692		187,284		172,920
Total cost of revenues		423,291		395,592		1,155,157		1,103,826
Gross Profit		111,465		113,809		229,058		251,148
Selling, general & administrative expenses		33,487		31,235		94,386		98,365
Research and development		-		114		2		149
Other operating (income) and expenses, net		(1,021)		(1,394)		(1,213)		(9,030)
Earnings from Operations		78,999		83,854		135,883		161,664
Interest expense		13,394		17,104		45,284		51,540
Other nonoperating (income) and expenses, net		2,146		(545)		2,220		189
Earnings from continuing operations before taxes on income		63,459		67,295		88,379		109,935
Income tax expense		13,374		14,061		20,080		26,615
Earnings from Continuing Operations		50,085		53,234		68,299		83,320
Gain on discontinued operations, net of related tax expense (benefit) of $138, ($37), $121 and $12, respectively		247		22		191		135
Consolidated net earnings		50,332		53,256		68,490		83,455
Less: Net earnings attributable to noncontrolling interests		1,176		1,266		949		1,246
Net Earnings Attributable to Martin Marietta Materials, Inc.	$	49,156	$	51,990	$	67,541	$	82,209
Net Earnings Attributable to Martin Marietta Materials, Inc.
Earnings from continuing operations	$	48,909	$	51,968	$	67,350	$	82,074
Earnings from discontinued operations		247		22		191		135
	$	49,156	$	51,990	$	67,541	$	82,209
Net Earnings Attributable to Martin Marietta Materials, Inc.
Per Common Share
Basic from continuing operations attributable to common shareholders	$	1.07	$	1.13	$	1.47	$	1.79
Discontinued operations attributable to common shareholders		-		-		-		-
	$	1.07	$	1.13	$	1.47	$	1.79
Diluted from continuing operations attributable to common shareholders	$	1.07	$	1.13	$	1.46	$	1.78
Discontinued operations attributable to common shareholders		-		-		-		-
	$	1.07	$	1.13	$	1.46	$	1.78
Weighted-Average Common Shares Outstanding
Basic		45,690		45,526		45,634		45,463
Diluted		45,799		45,678		45,783		45,639
Cash Dividends Per Common Share	$	0.40	$	0.40	$	1.20	$	1.20

See accompanying condensed notes to consolidated financial statements.

Page 4 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Nine Months Ended September 30,
	2011		2010
	(Dollars in Thousands)
	(Unaudited)
Cash Flows from Operating Activities:
Consolidated net earnings	$	68,490	$	83,455
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization		129,673		135,946
Stock-based compensation expense		9,317		11,684
Gains on divestitures and sales of assets		(3,890)		(4,293)
Deferred income taxes		6,358		17,131
Excess tax benefits from stock-based compensation transactions		-		(1,643)
Other items, net		1,370		704
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net		(77,971)		(86,798)
Inventories, net		(4,431)		8,888
Accounts payable		25,975		24,898
Other assets and liabilities, net		24,979		12,639
Net Cash Provided by Operating Activities		179,870		202,611
Cash Flows from Investing Activities:
Additions to property, plant and equipment		(93,518)		(110,024)
Acquisitions, net		(49,930)		(28,107)
Proceeds from divestitures and sales of assets		6,178		4,524
Railcar construction advances		-		(8,997)
Repayments of railcar construction advances		-		8,997
Net Cash Used for Investing Activities		(137,270)		(133,607)
Cash Flows from Financing Activities:
Borrowings of long-term debt		460,000		150,000
Repayments of long-term debt		(445,471)		(369,229)
Debt issuance costs		(3,328)		(80)
Change in bank overdraft		(2,123)		(1,737)
Payments on capital lease obligations		-		(308)
Dividends paid		(55,232)		(55,157)
Distributions to owners of noncontrolling interests		(1,000)		-
Purchase of remaining interest in existing limited liability company		(10,394)		-
Issuances of common stock		1,465		2,772
Excess tax benefits from stock-based compensation transactions		-		1,643
Net Cash Used for Financing Activities		(56,083)		(272,096)
Net Decrease in Cash and Cash Equivalents		(13,483)		(203,092)
Cash and Cash Equivalents, beginning of period		70,323		263,591
Cash and Cash Equivalents, end of period	$	56,840	$	60,499
Noncash Investing and Financing Activities:
Issuance of notes payable for acquisition of land	$	-	$	450
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	36,649	$	36,073
Cash (refunds) payments for income taxes	$	(7,831)	$	3,732

See accompanying condensed notes to consolidated financial statements.

Page 5 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

CONSOLIDATED STATEMENT OF TOTAL EQUITY

(Unaudited)

(in thousands)	Shares of Common Stock		Common Stock		Additional Paid-in Capital		Accumulated Other Comprehensive Loss		Retained Earnings		Total Shareholders’ Equity		Noncontrolling Interests		Total Equity
Balance at December 31, 2010		45,579	$	455	$	396,485	$	(53,660)	$	1,082,160	$	1,425,440	$	42,819	$	1,468,259
Consolidated net earnings		-		-		-		-		67,541		67,541		949		68,490
Adjustment for funded status of pension and postretirement benefit plans, net of tax of $6,663		-		-		-		4,130		-		4,130		2		4,132
Foreign currency translation loss		-		-		-		(462)		-		(462)		-		(462)
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax of $283		-		-		-		432		-		432		-		432
Consolidated comprehensive earnings												71,641		951		72,592
Dividends declared		-		-		-		-		(55,232)		(55,232)		-		(55,232)
Issuances of common stock for stock award plans		118		1		(1,210)		-		-		(1,209)		-		(1,209)
Stock-based compensation expense		-		-		9,317		-		-		9,317		-		9,317
Distributions to owners of noncontrolling interests		-		-		-		-		-		-		(1,000)		(1,000)
Purchase of remaining interest in existing limited liability company		-		-		(3,737)		-		-		(3,737)		(3,439)		(7,176)
Balance at September 30, 2011		45,697	$	456	$	400,855	$	(49,560)	$	1,094,469	$	1,446,220	$	39,331	$	1,485,551

See accompanying condensed notes to consolidated financial statements.

Page 6 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements of Martin Marietta Materials, Inc. (the “Corporation”) have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and to Article 10 of Regulation S-X. The Corporation has continued to follow the accounting policies set forth in the audited consolidated financial statements and related notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011. In the opinion of management, the interim financial information provided herein reflects all adjustments, consisting of normal recurring accruals, necessary for a fair presentation of the results of operations, financial position and cash flows for the interim periods. The results of operations for the quarter and nine months ended September 30, 2011 are not indicative of the results expected for other interim periods or the full year. The balance sheet at December 31, 2010 has been derived from the audited financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2010.

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings attributable to Martin Marietta Materials, Inc., reduced by dividends and undistributed earnings attributable to the Corporation’s unvested restricted stock awards and incentive stock awards. The denominator for basic earnings per common share is the weighted-average number of common shares outstanding during the period. Diluted earnings per common share are computed assuming that the weighted-average number of common shares is increased by the conversion, using the treasury stock method, of awards to be issued to employees and nonemployee members of the Corporation’s Board of Directors under certain stock-based compensation arrangements if the conversion is dilutive. The diluted per-share computations reflect a change in the number of common shares outstanding (the denominator) to include the number of additional shares that would have been outstanding if the potentially dilutive common shares had been issued.

Page 7 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

1. Significant Accounting Policies (continued)

Earnings per Common Share (continued)

The following table reconciles the numerator and denominator for basic and diluted earnings per common share:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	48,909	$	51,968	$	67,350	$	82,074
Less: Distributed and undistributed earnings attributable to unvested awards		378		529		557		865
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		48,531		51,439		66,793		81,209
Basic and diluted net earnings available to common shareholders from discontinued operations		247		22		191		135
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	48,778	$	51,461	$	66,984	$	81,344
Basic weighted-average common shares outstanding		45,690		45,526		45,634		45,463
Effect of dilutive employee and director awards		109		152		149		176
Diluted weighted-average common shares outstanding		45,799		45,678		45,783		45,639

Comprehensive Earnings/Loss

Consolidated comprehensive earnings/loss for the Corporation consists of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense. Consolidated comprehensive earnings for the three and nine months ended September 30, 2011 was $50,091,000 and $72,592,000, respectively. Consolidated comprehensive earnings for the three and nine months ended September 30, 2010 was $55,495,000 and $91,293,000, respectively.

Page 8 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

2. Business Combinations and Discontinued Operations

Business Combinations

In May 2011, the Corporation purchased the remaining 1% interest in an existing limited liability company for $10,394,000. The purchase of the remaining interest represents an equity transaction. Accordingly, the assets and liabilities related to the noncontrolling interest continued to be valued at their basis at the transaction date; the noncontrolling interest of $3,439,000 was eliminated; additional paid-in capital was reduced by $3,737,000 for the excess of the cash paid, including transaction costs, over the noncontrolling interest at the acquisition date; and a deferred tax asset of $3,218,000 was recorded. The purchase price and the payment of transaction costs have been classified as a financing activity in the Corporation’s consolidated statement of cash flows for the nine months ended September 30, 2011.

In June 2011, the Corporation acquired the construction assets of six aggregates quarries, two ready mixed concrete plants and an asphalt plant, all of which are located in western San Antonio, Texas. The operating results of the acquired locations are reported through the Corporation’s West Group in the financial statements starting from the date of acquisition. This transaction provides over 200 million tons of high-quality limestone reserves and complements the Corporation’s existing integrated presence in this high-growth market.

On October 12, 2011, the Corporation announced that it signed a definitive agreement with Lafarge North America Inc. (“Lafarge”) for the exchange of certain assets. Under the terms of the agreement, the Corporation will receive aggregates quarry sites, ready mixed concrete and asphalt plants, and a road paving business in the metropolitan Denver, Colorado, region. In exchange, Lafarge will receive properties consisting of quarries, an asphalt plant and distribution yards operated by the Corporation along the Mississippi River and a cash payment. The transaction is anticipated to close within 60 days, subject to regulatory approval.

Divestitures and Permanent Closures

Operations that are disposed of or permanently shut down represent discontinued operations, and, therefore, the results of their operations through the dates of disposal and any gain or loss on disposals are included in discontinued operations in the consolidated statements of earnings. All discontinued operations relate to the Aggregates business.

Page 9 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

2. Business Combinations and Discontinued Operations (continued)

Discontinued operations included the following net sales, pretax gain or loss on operations, income tax benefit or expense and overall net earnings:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Net sales	$	27	$	44	$	94	$	102
Pretax gain (loss) on operations	$	385	$	(15)	$	312	$	147
Income tax expense (benefit)		138		(37)		121		12
Net earnings	$	247	$	22	$	191	$	135

3. Inventories, Net

	September 30, 2011		December 31, 2010		September 30, 2010
	(Dollars in Thousands)
Finished products	$	362,924	$	358,138	$	350,842
Products in process and raw materials		9,483		13,842		14,310
Supplies and expendable parts		53,624		46,958		46,566
		426,031		418,938		411,718
Less allowances		(88,301)		(87,044)		(87,898)
Total	$	337,730	$	331,894	$	323,820

4. Goodwill and Intangible Assets

The following table shows changes in goodwill, all of which relate to the Aggregates business, by reportable segment and in total (dollars in thousands):

	Nine Months Ended September 30, 2011
	Mideast Group		Southeast Group		West Group		Total
Balance at beginning of period	$	122,052	$	105,870	$	398,605	$	626,527
Acquisitions		—		—		12,512		12,512
Balance at end of period	$	122,052	$	105,870	$	411,117	$	639,039

Page 10 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

5. Long-Term Debt

	September 30,           2011		December 31,           2010		September 30,           2010
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	298,428	$	298,288	$	298,242
7% Debentures, due 2025		124,411		124,393		124,388
6.25% Senior Notes, due 2037		247,906		247,882		247,874
6.875% Notes, due 2011		—		242,129		242,118
Term Loan Facility, due 2015, interest rate of 1.99% at September 30, 2011		250,000		—		—
Term Loan, due 2012, interest rate of 3.29% at December 31, 2010		—		111,750		111,750
Revolving Facility, interest rate of 1.61% at September 30, 2011		20,000		—		—
AR Credit Facility, interest rate of 1.60% at September 30, 2011		100,000		—		—
Other notes		4,740		6,317		6,757
Total debt		1,045,485		1,030,759		1,031,129
Less current maturities		(7,150)		(248,714)		(245,423)
Long-term debt	$	1,038,335	$	782,045	$	785,706

On March 31, 2011, the Corporation entered into a Credit Agreement with JPMorgan Chase Bank, N.A., as Administrative Agent, Wells Fargo Bank, N.A., Branch Banking and Trust Company, SunTrust Bank, and Bank of America, N.A., as Co-Syndication Agents, and the lenders party thereto (the “Credit Agreement”), which provides for a $250,000,000 senior unsecured term loan (the “Term Loan Facility”) and a $350,000,000 four-year senior unsecured revolving facility (the “Revolving Facility”, and together with the Term Loan Facility, the “Senior Unsecured Credit Facilities”). The Senior Unsecured Credit Facilities are syndicated with the following banks:

Lender	Revolving Facility       Commitment		Term Loan Facility       Commitment
	(Dollars in Thousands)
JPMorgan Chase Bank, N.A.	$	46,667	$	33,333
Wells Fargo Bank, N.A.		46,667		33,333
SunTrust Bank		46,667		33,333
Branch Banking and Trust Company		46,667		33,333
Bank of America, N.A.		46,667		33,333
Citibank, N.A.		29,167		20,833
Deutsche Bank AG New York Branch		29,167		20,833
The Northern Trust Company		29,167		20,833
Comerica Bank		14,582		10,418
Regions Bank		14,582		10,418
Total	$	350,000	$	250,000

Page 11 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

5. Long-Term Debt (continued)

Borrowings under the Senior Unsecured Credit Facilities bear interest, at the Corporation’s option, at rates based upon LIBOR or a base rate, plus, for each rate, a margin determined in accordance with a ratings-based pricing grid. The base rate is defined as the highest of (i) JPMorgan Chase Bank N.A.’s prime lending rate, (ii) the Federal Funds rate plus 0.5% and (iii) one-month LIBOR plus 1%.

The Revolving Facility expires on March 31, 2015, with any outstanding principal amounts, together with interest accrued thereon, due in full on that date.

On March 31, 2011, the Corporation borrowed $250,000,000 under the Term Loan Facility, a portion of which was used to prepay the $111,750,000 Term Loan due 2012. The Corporation is required to make annual principal payments of $5,000,000, with the remaining outstanding principal, together with interest accrued thereon, due in full on March 31, 2015.

On March 31, 2011, the Corporation entered into the Second Amendment to Account Purchase Agreement with Wells Fargo Bank, N.A., which amended its $100,000,000 secured accounts receivable credit facility (the “AR Credit Facility”). As amended, purchases and settlements will be made monthly. Additionally, as amended, borrowings under the AR Credit Facility bear interest at a rate equal to the one-month LIBOR plus 1.35%. Borrowings under the AR Credit Facility are limited based on the balance of the Corporation’s accounts receivable and mature on April 20, 2012.

On April 1, 2011, the Corporation borrowed $100,000,000 under the AR Credit Facility, which in addition to proceeds from the Term Loan Facility, was used to repay $242,140,000 of 6.875% Notes that matured on that date. At September 30, 2011, outstanding borrowings of $100,000,000 were classified as long-term on the consolidated balance sheet as the Corporation has the ability and intent to refinance its AR Credit Facility with borrowings that mature in more than twelve months.

The Credit Agreement and the AR Credit Facility, as amended, require the Corporation’s ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve month period (the “Ratio”) to not exceed 3.5x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the AR Credit Facility, consolidated debt, including debt guaranteed by the Corporation, may be reduced by the Corporation’s unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation.

Page 12 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

5. Long-Term Debt (continued)

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three and nine months ended September 30, 2011, the Corporation recognized $242,000 and $715,000, respectively, as additional interest expense. For the three and nine months ended September 30, 2010, the Corporation recognized $226,000 and $667,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the forward starting interest rate swap agreements will increase annual interest expense by approximately $1,000,000 until the maturity of the 6.6% Senior Notes in 2018.

6. Financial Instruments

The Corporation’s financial instruments include temporary cash investments, accounts receivable, notes receivable, bank overdraft, publicly registered long-term notes, debentures and other long-term debt.

Temporary cash investments are placed primarily in money market funds and Eurodollar time deposits with the following financial institutions: Bank of America, N.A., Branch Banking and Trust Company, JPMorgan Chase Bank, N.A., Regions Financial Corporation and Wells Fargo Bank, N.A. The Corporation’s cash equivalents have maturities of less than three months. Due to the short maturity of these investments, they are carried on the consolidated balance sheets at cost, which approximates fair value.

Customer receivables are due from a large number of customers, primarily in the construction industry, and are dispersed across wide geographic and economic regions. However, customer receivables are more heavily concentrated in certain states (namely, Texas, North Carolina, Georgia, Iowa and Louisiana which accounted for approximately 55% of the Aggregate business’ 2010 net sales). The estimated fair values of customer receivables approximate their carrying amounts.

Notes receivable are not publicly traded. However, using current market interest rates, but excluding adjustments for credit worthiness, if any, management estimates that the fair value of notes receivable approximates the carrying amount.

The bank overdraft represents the float of outstanding checks. The estimated fair value of the bank overdraft approximates its carrying value.

Page 13 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

6. Financial Instruments (continued)

The carrying values and fair values of the Corporation’s long-term debt were $1,045,485 and $1,072,235, respectively, at September 30, 2011; $1,030,759 and $1,051,704, respectively, at December 31, 2010; and $1,031,129 and $1,099,298, respectively, at September 30, 2010. The estimated fair value of the Corporation’s publicly registered long-term notes and debentures was estimated based on quoted market prices. The estimated fair value of other borrowings approximates its carrying amount.

7. Income Taxes

Income tax benefit/expense reported in the Corporation’s consolidated statements of earnings includes income tax benefit/expense on earnings attributable to both the Corporation and its noncontrolling interests.

	Nine Months Ended September 30,
	2011	2010
Estimated effective income tax rate:
Continuing operations	22.7%	24.2%
Discontinued operations	38.8%	8.2%
Consolidated overall	22.8%	24.2%

The Corporation’s effective income tax rate reflects the effect of federal and state income taxes and the impact of differences in book and tax accounting arising from the net permanent benefits associated with the depletion allowances for mineral reserves and the domestic production deduction. The effective income tax rates for discontinued operations reflect the tax effects of individual operations’ transactions and are not indicative of the Corporation’s overall effective income tax rate.

The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2011, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2011, increased consolidated net earnings for the nine months ended September 30, 2011 by $3,636,000, or $0.08 per diluted share. The consolidated overall estimated effective income tax rate for the nine months ended September 30, 2011 included the following discrete events: the favorable effective settlement of the Internal Revenue Service audit for the 2008 tax year, resolution of a federal tax and interest overpayment related to the 2006 tax year and an agreed-upon refund for the double taxation of the Corporation’s wholly-owned Canadian subsidiary for the 2001 and 2002 tax years.

Page 14 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

7. Income Taxes (continued)

The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2010, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2010, increased consolidated net earnings for the nine months ended September 30, 2010 by $5,724,000, or $0.13 per diluted share. The overall estimated effective income tax rate for the nine months ended September 30, 2010 included the effective settlement of issues related to the 2004 and 2005 tax years, the effective settlement of the Internal Revenue Service audit for the 2007 tax year, the expiration of the statute of limitations for federal examination of the 2006 tax year, the provision of a valuation allowance for unused tax credits, and the true-up of the 2009 provision estimates to actual taxes paid as a result of filing the related tax returns during the period.

8. Pension and Postretirement Benefits

The following presents the estimated components of the recorded net periodic benefit cost for pension and postretirement benefits (dollars in thousands):

		$12,9961		$12,9961		$12,9961		$12,9961
	Three Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	2,815	$	2,761	$	88	$	137
Interest cost		5,808		5,753		556		688
Expected return on assets		(6,121)		(5,255)		—		—
Amortization of:
Prior service cost (credit)		133		146		(435)		(372)
Actuarial loss (gain)		1,581		2,554		(21)		—
Settlement charge		332		923		—		—
Total net periodic benefit cost	$	4,548	$	6,882	$	188	$	453

	Nine Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	8,446	$	8,282	$	263	$	411
Interest cost		17,425		17,259		1,669		2,063
Expected return on assets		(18,364)		(15,766)		—		—
Amortization of:
Prior service cost (credit)		400		437		(1,306)		(1,117)
Actuarial loss (gain)		4,743		7,661		(64)		—
Settlement charge		346		1,006		—		—
Total net periodic benefit cost	$	12,996	$	18,879	$	562	$	1,357

Page 15 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

9. Commitments and Contingencies

Legal and Administrative Proceedings

The Corporation is engaged in certain legal and administrative proceedings incidental to its normal business activities. In the opinion of management and counsel, based upon currently-available facts, it is remote that the ultimate outcome of any litigation and other proceedings, including those pertaining to environmental matters, relating to the Corporation and its subsidiaries, will have a material adverse effect on the overall results of the Corporation’s operations, its cash flows or its financial position.

During the nine months ended September 30, 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for approximately $7,000,000. In connection with the settlement, the Corporation reversed the excess of the established legal reserve, thereby increasing net earnings for the nine months ended September 30, 2010 by $2,751,000, or $0.06 per diluted share.

Guarantee of Affiliate

In July 2010, the Corporation entered into a reimbursement and indemnification agreement with Fifth Third Bank (“Fifth Third”) to guarantee the repayment of amounts borrowed by an affiliate under a $20,000,000 revolving line of credit provided by Fifth Third and a guaranty agreement with Bank of America, N.A., to guarantee $12,400,000 of payment obligations of its affiliate under equipment lease agreements. The affiliate agreed to reimburse and indemnify the Corporation for any payments and expenses the Corporation may incur from these agreements. The Corporation holds a subordinate lien of the affiliate’s assets as collateral for potential payments under the agreements. On April 8, 2011, the affiliate converted its equipment leasing agreements with Bank of America, N.A. to a five-year $6,200,000 amortizing loan and the Corporation executed a reaffirmation of guaranty with respect to such loan. On July 20, 2011, the affiliate’s $20,000,000 revolving line of credit was increased to $24,000,000. This line of credit expires in July 2013. Additionally, the reimbursement and indemnification agreement related to this line of credit was terminated and replaced by an unconditional guaranty of payment from the Corporation. The affiliate restated its reimbursement and indemnity obligations to the Corporation, and the Corporation retained its subordinate lien on the assets of the affiliate.

10. Business Segments

The Corporation conducts its aggregates operations through three reportable business segments: Mideast Group, Southeast Group and West Group. The Corporation also has a Specialty Products segment that includes magnesia-based chemicals products and dolomitic lime. These segments are consistent with the Corporation’s current management reporting structure.

Page 16 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

10. Business Segments (continued)

The following tables display selected financial data for continuing operations for the Corporation’s reportable business segments. Corporate loss from operations primarily includes depreciation on capitalized interest, expenses for corporate administrative functions, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Total revenues:
Mideast Group	$	144,990	$	144,691	$	370,793	$	375,729
Southeast Group		103,832		115,713		287,340		313,251
West Group		230,733		202,895		563,092		521,330
Total Aggregates Business		479,555		463,299		1,221,225		1,210,310
Specialty Products		55,201		46,102		162,990		144,664
Total	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Net sales:
Mideast Group	$	131,579	$	133,607	$	341,308	$	348,524
Southeast Group		84,475		91,216		232,469		251,440
West Group		197,589		176,623		474,070		450,212
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Earnings (Loss) from operations:
Mideast Group	$	32,740	$	38,755	$	66,332	$	80,338
Southeast Group		(3,061)		1,414		(20,121)		(144)
West Group		39,659		33,942		53,759		54,654
Total Aggregates Business		69,338		74,111		99,970		134,848
Specialty Products		15,573		12,043		49,984		40,067
Corporate		(5,912)		(2,300)		(14,071)		(13,251)
Total	$	78,999	$	83,854	$	135,883	$	161,664

Page 17 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

CONDENSED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Continued)

10. Business Segments (continued)

The asphalt, ready mixed concrete, road paving and other product lines are considered internal customers of the core aggregates business. Product lines for the Specialty Products segment consist of magnesia-based chemicals, dolomitic lime and other. Net sales by product line are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Aggregates	$	379,325	$	376,554	$	963,991	$	986,038
Asphalt		13,095		9,833		38,062		29,014
Ready Mixed Concrete		9,750		7,056		22,691		19,558
Road Paving		10,017		6,575		19,425		12,602
Other		1,456		1,428		3,678		2,964
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Magnesia-Based Chemicals		36,064		29,290		105,369		89,287
Dolomitic Lime		13,861		12,457		42,743		41,386
Other		417		516		972		1,205
Total Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054

11. Supplemental Cash Flow Information

The following table presents the components of the change in other assets and liabilities, net:

	Nine Months Ended September 30,
	2011		2010
	(Dollars in Thousands)
Other current and noncurrent assets	$	2,325	$	3,108
Accrued salaries, benefits and payroll taxes		(2,324)		(2,237	)
Accrued insurance and other taxes		8,366		8,134
Accrued income taxes		22,208		11,177
Accrued pension, postretirement and postemployment benefits		(16,046)		(10,849	)
Other current and noncurrent liabilities		10,450		3,306
	$	24,979	$	12,639

Page 18 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

Item 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations.

OVERVIEW    Martin Marietta Materials, Inc. (the “Corporation”), conducts its operations through four reportable business segments: Mideast Group, Southeast Group, West Group (collectively, the “Aggregates business”) and Specialty Products. The Corporation’s annual net sales and earnings are predominately derived from its Aggregates business, which processes and sells granite, limestone, and other aggregates products from a network of 283 quarries, distribution facilities and plants to customers in 31 states, Canada, the Bahamas and the Caribbean Islands. The Aggregates business’ products are used primarily by commercial customers principally in domestic construction of highways and other infrastructure projects and for nonresidential and residential building development. Aggregates products are also used in the railroad, environmental, utility and agricultural industries. The Specialty Products segment produces magnesia-based chemicals products used in industrial, agricultural and environmental applications and dolomitic lime sold primarily to customers in the steel industry.

CRITICAL ACCOUNTING POLICIES    The Corporation outlined its critical accounting policies in its Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011. There were no changes to the Corporation’s critical accounting policies during the nine months ended September 30, 2011.

RESULTS OF OPERATIONS

Except as indicated, the following comparative analysis in the Results of Operations section of this Management’s Discussion and Analysis of Financial Condition and Results of Operations reflects results from continuing operations and is based on net sales and cost of sales. The Corporation’s heritage aggregates product line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and divestitures.

Gross margin as a percentage of net sales and operating margin as a percentage of net sales represent non-GAAP measures. The Corporation presents these ratios calculated based on net sales, as it is consistent with the basis by which management reviews the Corporation’s operating results. Further, management believes it is consistent with the basis by which investors analyze the Corporation’s operating results given that freight and delivery revenues and costs represent pass-throughs and have no profit mark-up. Gross margin and operating margin calculated as percentages of total revenues represent the most directly comparable financial measures calculated in accordance with generally accepted accounting principles (GAAP). The following tables present the calculations of gross margin and operating margin for the three and nine months ended September 30, 2011 and 2010 in accordance with GAAP and reconciliations of the ratios as percentages of total revenues to percentages of net sales (dollars in thousands):

Page 19 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Gross Margin in Accordance with GAAP

		$111,465		$111,465		$111,465		$111,465
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Gross profit	$	111,465	$	113,809	$	229,058	$	251,148
Total revenues	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Gross margin		20.8 %		22.3 %		16.5 %		18.5 %

Gross Margin Excluding Freight and Delivery Revenues

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Gross profit	$	111,465	$	113,809	$	229,058	$	251,148
Total revenues	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Less: Freight and delivery revenues		(70,771)		(65,692)		(187,284)		(172,920)
Net sales	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Gross margin excluding freight and delivery revenues		24.0 %		25.6 %		19.1 %		21.2 %

Operating Margin in Accordance with GAAP

		$111,465		$111,465		$111,465		$111,465
	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Earnings from operations	$	78,999	$	83,854	$	135,883	$	161,664
Total revenues	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Operating margin		14.8 %		16.5 %		9.8 %		11.9 %

Page 20 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Operating Margin Excluding Freight and Delivery Revenues

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Earnings from operations	$	78,999	$	83,854	$	135,883	$	161,664
Total revenues	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Less: Freight and delivery revenues		(70,771)		(65,692)		(187,284)		(172,920)
Net sales	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Operating margin excluding freight and delivery revenues		17.0 %		18.9 %		11.4 %		13.7 %

Adjusted earnings per diluted share (“Adjusted EPS”), the earnings per diluted share impact of a nonrecurring early retirement benefit and selling, general and administrative expenses adjusted for a nonrecurring early retirement benefit (“Adjusted SG&A”) as a percentage of net sales represent non-GAAP measures. Management presents these measures as it believes Adjusted EPS and Adjusted SG&A represent the most comparable operating performance measures to analysts’ earnings expectations for the three months ended September 30, 2011. Analysts have not factored the impact of the nonrecurring early retirement benefit into their EPS or selling, general and administrative expenses estimates for the quarter.

The following shows the calculation of the earnings per diluted share impact of the nonrecurring early retirement benefit and reconciles earnings per diluted share in accordance with generally accepted accounting principles for the three months ended September 30, 2011 to Adjusted EPS (in thousands, except per share data):

After tax impact of nonrecurring early retirement benefit	$	1,708
Diluted average number of common shares outstanding for the three months ended September 30, 2011		45,799
Earnings per diluted share impact of nonrecurring early retirement benefit	$	0.04

	Three Months Ended     September 30, 2011
Earnings per diluted share in accordance with GAAP	$ 1.07
Add back: Earnings per diluted share impact of nonrecurring early retirement benefit	0.04
Adjusted EPS	$ 1.11

Page 21 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The following shows the calculation of Adjusted SG&A as a percentage of net sales (dollars in thousands):

	Three Months Ended     September 30, 2011
Selling, general and administrative expenses in accordance with GAAP	$	33,487
Deduct: Nonrecurring early retirement benefit		2,825
Adjusted SG&A	$	30,662
Net Sales	$	463,985
Adjusted SG&A as a percentage of net sales		6.6%

Quarter Ended September 30

Notable items for the quarter ended September 30, 2011 (all comparisons are versus the prior-year quarter):

• Earnings per diluted share of $1.07 and adjusted earnings per diluted share of $1.11 (excluding a $0.04 per diluted share impact of a nonrecurring early retirement benefit) compared with $1.13

• Consolidated net sales of $464.0 million, up 4.6%, compared with $443.7 million

• Heritage aggregates product line pricing up 2.8%

• Heritage aggregates product line volume down 2.2%

• Heritage aggregates product line direct production costs down slightly, despite a 16% increase in energy costs

• Specialty Products net sales of $50.3 million and earnings from operations of $15.6 million with a 240-basis-point improvement in operating margin (excluding freight and delivery revenues)

• Consolidated selling, general and administrative expenses up $2.3 million, resulting from a $2.8 million nonrecurring early retirement benefit

• Consolidated earnings from operations of $79.0 million compared with $83.9 million

The following table presents net sales, gross profit, selling, general and administrative expenses and earnings (loss) from operations data for the Corporation and its reportable segments for the three months ended September 30, 2011 and 2010. In each case, the data is stated as a percentage of net sales of the Corporation or the relevant segment, as the case may be.

Earnings from operations include research and development expense and other operating income and expenses, net. Research and development expense for the Corporation was $0.1 million for the quarter ended September 30, 2010.

Page 22 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

		$463,985		$463,985		$463,985		$463,985
	Three Months Ended September 30,
	2011				2010
	Amount		% of   Net Sales		Amount		% of   Net Sales
	(Dollars in Thousands)
Net sales:
Mideast Group	$	131,579			$	133,607
Southeast Group		84,475				91,216
West Group		197,589				176,623
Total Aggregates Business		413,643		100.0		401,446		100.0
Specialty Products		50,342		100.0		42,263		100.0
Total	$	463,985		100.0	$	443,709		100.0
Gross profit (loss):
Mideast Group	$	42,963			$	48,712
Southeast Group		1,686				7,926
West Group		49,515				43,178
Total Aggregates Business		94,164		22.8		99,816		24.9
Specialty Products		17,804		35.4		14,643		34.6
Corporate		(503)		—		(650)		—
Total	$	111,465		24.0	$	113,809		25.6
Selling, general & administrative expenses:
Mideast Group	$	10,444			$	10,268
Southeast Group		6,362				6,318
West Group		10,730				10,676
Total Aggregates Business		27,536		6.7		27,262		6.8
Specialty Products		2,235		4.4		2,529		6.0
Corporate		3,716		—		1,444		—
Total	$	33,487		7.2	$	31,235		7.0
Earnings (Loss) from operations:
Mideast Group	$	32,740			$	38,755
Southeast Group		(3,061)				1,414
West Group		39,659				33,942
Total Aggregates Business		69,338		16.8		74,111		18.5
Specialty Products		15,573		30.9		12,043		28.5
Corporate		(5,912)		—		(2,300)		—
Total	$	78,999		17.0	$	83,854		18.9

Page 23 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

During the third quarter of 2011, the Corporation continued to build on a foundation that has enabled it to outperform others in the industry as well as work through the prolonged economic downturn. Management’s disciplined business approach is once again evident in the Corporation’s operating results, which reflect aggregates product line pricing growth and continued cost control. Further, the Specialty Products business generated a new quarterly record for net sales and a third-quarter record for earnings from operations.

The following tables present volume and pricing data and shipments data for the aggregates product line. Heritage aggregates operations exclude volume and pricing data for acquisitions that were not included in prior-year operations for the comparable period and divestitures.

	Three Months Ended September 30, 2011
Volume/Pricing Variance (1)	Volume	Pricing
Heritage Aggregates Product Line (2):
Mideast Group	(3.9%)	1.6%
Southeast Group	(12.7%)	5.2%
West Group	3.7%	4.2%
Heritage Aggregates Operations	(2.2%)	2.8%
Aggregates Product Line (3)	(1.3%)	2.4%

	Three Months Ended September 30,
	2011		2010
	(tons in thousands)
Shipments
Heritage Aggregates Product Line (2):
Mideast Group		11,946		12,436
Southeast Group		6,997		8,012
West Group		18,465		17,807
Heritage Aggregates Operations		37,408		38,255
Acquisitions		344		—
Divestitures (4)		4		7
Aggregates Product Line (3)		37,756		38,262

(1) Volume/pricing variances reflect the percentage increase/(decrease) from the comparable period in the prior year.

(2) Heritage Aggregates Product Line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and divestitures.

(3) Aggregates Product Line includes all acquisitions from the date of acquisition and divestitures through the date of disposal.

(4) Divestitures include the tons related to divested aggregates product line operations up to the date of divestiture.

Page 24 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The Aggregates business achieved pricing growth in each of its segments during the third quarter of 2011. Last year, management predicted aggregates product line pricing recovery once a certain degree of volume stability was achieved. Driven by growth in aggregates shipments in 2010, the 2.8% increase in heritage aggregates product line average selling price represents the Aggregates business’ third consecutive quarter of pricing improvement. Further, pricing momentum has been achieved despite a modest decline in heritage aggregates product line shipments. Even more compelling, most geographic markets with declines in quarterly shipments still reported an increase in average selling price, demonstrating the continued pricing power of the Aggregates business.

The infrastructure market continues to represent more than half of the Aggregates business. Although Congress recently extended federal highway funding through March 31, 2012, states remain hesitant to initiate long-term projects. Additionally, the waning impact of the American Recovery and Reinvestment Act (“ARRA”), or Stimulus, continues as the December 31, 2012 deadline to complete all such projects approaches. These factors led to a 3% decline in the Corporation’s infrastructure shipments for the third quarter. Management nonetheless remains optimistic that the underlying demand and need for state infrastructure projects is compelling and anticipates consistent growth will follow once long-term federal funding is resolved.

Aggregates shipments to the commercial component of the Corporation’s nonresidential end-use market increased over the prior-year quarter. Although this commercial recovery is limited, and often now found in geographies with distinct characteristics, such as areas with a strong military presence, growth in this sector is encouraging. This commercial growth, however, was offset by a reduction in shipments to the heavy industrial component, namely the energy sector. The decline in energy-related sales reflects reduced shipments to the nuclear power and wind energy components of this sector. Cumulatively, the Aggregates business experienced a slight decline in nonresidential shipments. Shipments to the residential market grew 9%, while the ChemRock/Rail end-use market was flat. Overall, heritage aggregates product line shipments were down 2.2% from the third quarter of 2010.

The Aggregates business is significantly affected by seasonal changes and other weather-related conditions. Aggregates production and shipment levels coincide with general construction activity levels, most of which occurs in the spring, summer and fall. Thus, production and shipment levels vary by quarter. Operations concentrated in the northern United States generally experience more severe winter weather conditions than operations in the Southeast and Southwest. Excessive rainfall, and conversely excessive drought, can also jeopardize shipments, production and profitability. Because of the potentially significant impact of weather on the Corporation’s operations, third-quarter results are not indicative of expected performance for other interim periods or the full year.

Page 25 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The Specialty Products business continues to exceed expectations, setting a new quarterly record for net sales and a new third-quarter record for earnings from operations. Net sales of $50.3 million increased $8.1 million, or 19%, over the prior-year quarter, with $3.5 million, or 44%, dropping to the bottom line. The result: record third-quarter earnings from operations of $15.6 million. Operating margin (excluding freight and delivery revenues) expanded 240 basis points over the prior-year quarter.

Cost control continues to be a critical component of the Corporation’s business model and strategies. To that effect, direct production costs in the heritage aggregates product line were down slightly, despite a 16% increase in noncontrollable energy costs. Diesel fuel, which continues to be the single largest component of the Corporation’s energy expenses, averaged $3.00 per gallon compared with $2.05 in the prior-year quarter. This increase in diesel for the quarter lowered earnings per diluted share by $0.08. Cost reductions, primarily in personnel, repairs and depreciation, more than offset the energy increase for the Corporation’s heritage operations. However, consolidated cost of sales increased 6.9% due to higher raw material costs for liquid asphalt and an increase in embedded freight costs, both directly attributable to the increase in diesel.

The Corporation’s gross margin (excluding freight and delivery revenues) for the three months ended September 30 decreased 160 basis points to 24.0% in 2011. The following presents a rollforward of the Corporation’s gross profit (dollars in thousands):

Consolidated gross profit, quarter ended September 30, 2010	$	113,809
Aggregates Business:
Pricing strength		13,562
Volume weakness		(1,365)
Increase in noncontrollable energy costs		(6,451)
Increase in liquid asphalt costs		(3,492)
Other cost increases, net		(7,906)
Decrease in Aggregates Business gross profit		(5,652)
Specialty Products		3,161
Corporate		147
Decrease in consolidated gross profit		(2,344)
Consolidated gross profit, quarter ended September 30, 2011	$	111,465

The Corporation’s cost focus extends to selling, general and administrative expenses. Although on a consolidated basis, these costs increased $2.3 million for the quarter, due to a $2.8 million nonrecurring early retirement benefit, after adjusting for this nonrecurring item, consolidated selling, general and administrative expenses were 6.6% of net sales, representing an industry-leading performance.

Page 26 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Among other items, other operating income and expenses, net, includes gains and losses on the sale of assets; gains and losses related to customer accounts receivable; rental, royalty and services income; and the accretion and depreciation expenses related to asset retirement obligations. For the third quarter, consolidated other operating income and expenses, net, was income of $1.0 million in 2011 compared with income of $1.4 million in 2010.

Interest expense was $13.4 million for the third quarter 2011 compared with $17.1 million for the prior-year quarter. The decrease was due to a higher mix of variable-rate debt which currently bears a lower interest rate than the Corporation’s fixed-rate debt.

In addition to other offsetting amounts, other nonoperating income and expenses, net, are comprised generally of interest income and net equity earnings from nonconsolidated investments. Consolidated other nonoperating income and expenses, net, for the quarter ended September 30, was an expense of $2.1 million in 2011 compared with income of $0.5 million in 2010, primarily as a result of a loss on foreign currency transactions in 2011.

Nine months ended September 30

Notable items for the nine months ended September 30, 2011 (all comparisons are versus the prior-year period):

• Net sales of $1.197 billion, up 1.3%

• Heritage aggregates product line pricing up 2.1% and volume down 4.7%

• Specialty Products record net sales of $149.1 million and record earnings from operations of $50.0 million

• Selling, general and administrative expenses down $4.0 million, or 40 basis points as a percentage of net sales

• Consolidated operating margin (excluding freight and delivery revenues) of 11.4% compared with 13.7%

• Earnings per diluted share of $1.46 compared with $1.78

The following table presents net sales, gross profit, selling, general and administrative expenses and earnings (loss) from operations data for the Corporation and its reportable segments for the nine months ended September 30, 2011 and 2010. In each case, the data is stated as a percentage of net sales of the Corporation or the relevant segment, as the case may be.

Page 27 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Earnings from operations include research and development expense and other operating income and expenses, net. Research and development expense for the Corporation was $0.1 million for the nine months ended September 30, 2010. Consolidated other operating income and expenses, net, was income of $1.2 million and income of $9.0 million for the nine months ended September 30, 2011 and 2010, respectively.

	Nine Months Ended September 30,
	2011				2010
	Amount		% of Net Sales		Amount		% of Net Sales
	(Dollars in Thousands)
Net sales:
Mideast Group	$	341,308			$	348,524
Southeast Group		232,469				251,440
West Group		474,070				450,212
Total Aggregates Business		1,047,847		100.0		1,050,176		100.0
Specialty Products		149,084		100.0		131,878		100.0
Total	$	1,196,931		100.0	$	1,182,054		100.0
Gross profit (loss):
Mideast Group	$	94,124			$	108,220
Southeast Group		(3,155)				19,238
West Group		83,252				77,686
Total Aggregates Business		174,221		16.6		205,144		19.5
Specialty Products		56,763		38.1		48,271		36.6
Corporate		(1,926)		—		(2,267)		—
Total	$	229,058		19.1	$	251,148		21.2
Selling, general & administrative expenses:
Mideast Group	$	31,458			$	31,088
Southeast Group		18,738				19,056
West Group		32,008				31,851
Total Aggregates Business		82,204		7.8		81,995		7.8
Specialty Products		6,926		4.6		8,148		6.2
Corporate		5,256		—		8,222		—
Total	$	94,386		7.9	$	98,365		8.3

Page 28 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

	Nine Months Ended September 30,
	2011				2010
	Amount		% of Net Sales		Amount		% of Net Sales
	(Dollars in Thousands)
Earnings (Loss) from operations:
Mideast Group	$	66,332			$	80,338
Southeast Group		(20,121)				(144)
West Group		53,759				54,654
Total Aggregates Business		99,970		9.5		134,848		12.8
Specialty Products		49,984		33.5		40,067		30.4
Corporate		(14,071)		—		(13,251)		—
Total	$	135,883		11.4	$	161,664		13.7

Net sales for the Aggregates business for the nine months ended September 30 were $1.048 billion in 2011, a 0.2% decline versus 2010 net sales of $1.050 billion. Aggregates pricing at heritage locations was up 2.1%, while volume decreased 4.7%. Inclusive of acquisitions and divestitures, aggregates product line pricing increased 1.9% and volume decreased 4.1% for the nine months ended September 30, 2011.

The following tables present volume and pricing data and shipments data for the aggregates product line. Heritage aggregates operations exclude volume and pricing data for acquisitions that were not included in prior-year operations for the comparable period and divestitures.

	Nine Months Ended September 30, 2011
Volume/Pricing Variance (1)		Volume	Pricing
Heritage Aggregates Product Line (2):
Mideast Group		(4.6%)	1.3%
Southeast Group		(13.3%)	5.9%
West Group		(0.5%)	2.0%
Heritage Aggregates Operations		(4.7%)	2.1%
Aggregates Product Line (3)		(4.1%)	1.9%

Page 29 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

	Nine Months Ended September 30,
	2011		2010
	(tons in thousands)
Shipments
Heritage Aggregates Product Line (2):
Mideast Group		29,558		30,977
Southeast Group		19,378		22,352
West Group		45,614		45,836
Heritage Aggregates Operations		94,550		99,165
Acquisitions		573		—
Divestitures (4)		11		18
Aggregates Product Line (3)		95,134		99,183

(1) Volume/pricing variances reflect the percentage increase/(decrease) from the comparable period in the prior year.

(2) Heritage Aggregates Product Line excludes volume and pricing data for acquisitions that have not been included in prior-year operations for the comparable period and divestitures.

(3) Aggregates Product Line includes all acquisitions from the date of acquisition and divestitures through the date of disposal.

(4) Divestitures include the tons related to divested aggregates product line operations up to the date of divestiture.

Specialty Products’ net sales were $149.1 million for the first nine months of 2011 compared with $131.9 million for the prior-year period. The increase in net sales is due to volume growth in all major product lines. Earnings from operations for the nine months ended September 30, 2011 were $50.0 million compared with $40.1 million for the prior-year period.

Direct production costs and nonproduction costs for the Aggregates business increased during the nine months ended September 30, 2011 due to increased diesel expense, higher raw material costs for liquid asphalt and an increase in embedded freight costs.

Page 30 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The Corporation’s gross margin (excluding freight and delivery revenues) for the nine months ended September 30 decreased 210 basis points to 19.1% in 2011. The following presents a rollforward of the Corporation’s gross profit (dollars in thousands):

Consolidated gross profit, nine months ended September 30, 2010	$	251,148
Aggregates Business:
Pricing strength		30,688
Volume weakness		(33,017)
Increase in noncontrollable energy costs		(15,522)
Increase in liquid asphalt costs		(8,153)
Other cost increases, net		(4,919)
Decrease in Aggregates Business gross profit		(30,923)
Specialty Products		8,492
Corporate		341
Decrease in consolidated gross profit		(22,090)
Consolidated gross profit, nine months ended September 30, 2011	$	229,058

Selling, general and administrative expenses declined $4.0 million during the nine months ended September 30, 2011 due to lower personnel costs related to stock-based compensation and lower pension costs, partially offset by nonrecurring early retirement costs.

For the nine months ended September 30, consolidated other operating income and expenses, net, was income of $1.2 million in 2011 compared with income of $9.0 million in 2010. The 2011 amount includes $2.4 million of transactions costs related to acquisitions. During 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for less than its established legal reserve, which increased other operating income for the West Group by $5.0 million.

Consolidated interest expense was $45.3 million for the nine months ended September 30, 2011 compared with $51.5 million for the prior-year period. The decrease was due to a higher mix of variable-rate debt which currently bears a lower rate of interest compared with the Corporation’s fixed-rate debt.

The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2011, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2011, increased consolidated net earnings for the nine months ended September 30, 2011 by $3.6 million, or $0.08 per diluted share.

The settlement of legal proceeding relating to the Greenwood, Missouri, operation increased net earnings for the nine months ended September 30, 2010 by $2.8 million, or $0.06 per diluted share.

Page 31 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

LIQUIDITY AND CAPITAL RESOURCES

Net cash provided by operating activities during the nine months ended September 30, 2011 was $179.9 million compared with $202.6 million for the same period in 2010. Operating cash flow is primarily from consolidated net earnings or loss, before deducting depreciation, depletion and amortization, offset by working capital requirements. The reduction in net cash provided by operating activities for the nine months of 2011 as compared with the year-earlier period is primarily due to lower consolidated net earnings and a $4.4 million increase in inventories in 2011 compared with an $8.9 million inventory reduction in 2010, partially offset by a lower buildup of receivables. Days sales outstanding was 45 days, essentially unchanged from 2010.

Depreciation, depletion and amortization were as follows:

	Nine Months Ended September 30,
	2011		2010
	(Dollars in Thousands)
Depreciation	$	124,676	$	130,433
Depletion		2,592		3,171
Amortization		2,405		2,342
	$	129,673	$	135,946

The seasonal nature of the construction aggregates business impacts quarterly operating cash flow when compared with the year. Full year 2010 net cash provided by operating activities was $269.8 million compared with $202.6 million for the first nine months of 2010.

Capital expenditures, exclusive of acquisitions, for the first nine months were $93.5 million in 2011 and $110.0 million in 2010. In May 2011, the Corporation initiated construction of a $53 million dolomitic lime kiln at its Specialty Products location in Woodville, Ohio. This project is expected to be substantially complete by late 2012. The Corporation also opened an aggregates sales yard near Tampa, Florida adding to its rail-distribution network and serving the Tampa and Lakeland, Florida markets. Full-year capital spending for 2011 is expected to be approximately $155 million, including the Hunt Martin Materials joint venture but exclusive of acquisitions. Comparable full-year capital expenditures were $135.9 million in 2010.

During the nine months ended September 30, 2011, the Corporation acquired six aggregates facilities, as well as, several asphalt and ready mixed concrete operations in western San Antonio, Texas. This transaction provides over 200 million tons of high-quality limestone reserves and complements the Corporation’s existing integrated presence in this high-growth market. Over the past five years, San Antonio’s population and economic growth have consistently outperformed comparable national results with population growth of 13%.

Page 32 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

On October 12, 2011, the Corporation announced that it signed a definitive agreement for an asset exchange with Lafarge North America Inc. (“Lafarge”) to acquire its Front Range business in and around metropolitan Denver, Colorado. Under the terms of the agreement, the Corporation will receive aggregates sites, as well as vertically-integrated ready mixed concrete and asphalt plants and a road paving business. In exchange, Lafarge will receive properties consisting of quarries, an asphalt plant and distribution yards operated by the Corporation along the Mississippi River and a cash payment. Subject to regulatory approval, the Corporation expects to close the transaction this year.

On March 31, 2011, the Corporation entered into a Credit Agreement with JPMorgan Chase Bank, N.A., as Administrative Agent, Wells Fargo Bank, N.A., Branch Banking and Trust Company, SunTrust Bank, and Bank of America, N.A., as Co-Syndication Agents, and the lenders party thereto (the “Credit Agreement”), which provides for a $250 million senior unsecured term loan (the “Term Loan Facility”) and a $350 million four-year senior unsecured revolving facility (the “Revolving Facility”, and together with the Term Loan Facility, the “Senior Unsecured Credit Facilities”). On March 31, 2011, the Corporation borrowed $250 million under the Term Loan Facility, a portion of which was used to prepay outstanding borrowings of $111.8 million on the Term Loan due 2012. These borrowings were still outstanding at September 30, 2011. Additionally, at September 30, 2011, the Corporation had outstanding borrowings of $20 million on its Revolving Facility, which the Corporation currently has the ability and intent to maintain outstanding for longer than twelve months.

Additionally, on March 31, 2011, the Corporation entered into the Second Amendment to Account Purchase Agreement with Wells Fargo Bank, N.A., which amended its $100 million secured accounts receivable credit facility (the “AR Credit Facility”). As amended, purchases and settlements will be made monthly. Additionally, as amended, borrowings under the AR Credit Facility bear interest at a rate equal to the one-month LIBOR plus 1.35%. Borrowings under the AR Credit Facility are limited based on the balance of the Corporation’s accounts receivable and mature on April 20, 2012.

On April 1, 2011, the Corporation borrowed $100 million under the AR Credit Facility, which, in addition to proceeds from the Term Loan Facility, was used to repay $242.1 million of 6.875% Notes that matured on that date. At September 30, 2011, the Corporation had borrowings of $100 million outstanding under the AR Credit Facility. These borrowings were classified as long-term on the consolidated balance sheet as the Corporation has the ability and intent to refinance its AR Credit Facility with borrowings that will mature in more than twelve months.

During the nine months ended September 30, 2011, the Corporation purchased the remaining interest in a limited liability company for $10.4 million.

Page 33 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The Corporation can repurchase its common stock through open-market purchases pursuant to authority granted by its Board of Directors. The Corporation did not repurchase any shares of common stock during the nine months ended September 30, 2011 and 2010. Management currently has no intent to repurchase any shares of its common stock. At September 30, 2011, 5,042,000 shares of common stock were remaining under the Corporation’s repurchase authorization.

The Credit Agreement and the AR Credit Facility, as amended, require the Corporation’s ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve month period (the “Ratio”) to not exceed 3.5x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if there are no amounts outstanding under both the Revolving Facility and the AR Credit Facility, consolidated debt, including debt guaranteed by the Corporation, will be reduced for purposes of the covenant calculation by the Corporation’s unrestricted cash and cash equivalents in excess of $50 million, such reduction not to exceed $200 million (hereinafter, “net debt”).

The Ratio is calculated as net debt, including debt guaranteed by the Corporation, divided by consolidated EBITDA, as defined, for the trailing twelve months. Consolidated EBITDA is generally defined as earnings before interest expense, income tax expense, and depreciation, depletion and amortization expense for continuing operations. Additionally, stock-based compensation expense is added back and interest income is deducted in the calculation of consolidated EBITDA. Certain other nonrecurring items and noncash items, if they occur, can affect the calculation of consolidated EBITDA.

Page 34 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

At September 30, 2011, the Corporation’s ratio of consolidated debt to consolidated EBITDA, as defined, for the trailing twelve months EBITDA was 3.07 times and was calculated as follows (dollars in thousands):

	Twelve Month Period October 1, 2010 to September 30, 2011
Earnings from continuing operations attributable to Martin Marietta Materials, Inc.		$  82,102
Add back:
Interest expense		62,200
Income tax expense		22,712
Depreciation, depletion and amortization expense		170,768
Stock-based compensation expense		12,308
Deduct:
Interest income		(890)
Consolidated EBITDA, as defined		$  349,200
Consolidated debt, including debt guaranteed by the Corporation, at September 30, 2011		$  1,070,925
Deduct:
Unrestricted cash and cash equivalents in excess of $50,000 at September 30, 2011		—
Consolidated net debt, as defined, at September 30, 2011		$  1,070,925
Consolidated debt to consolidated EBITDA, as defined, at September 30, 2011 for the trailing twelve months EBITDA		3.07 X

In the event of a default on the leverage ratio, the lenders can terminate the Credit Agreement and AR Credit Facility and declare any outstanding balances as immediately due.

Cash on hand, along with the Corporation’s projected internal cash flows and availability of financing resources, including its access to debt and equity capital markets, are expected to continue to be sufficient to provide the capital resources necessary to support anticipated operating needs, cover debt service requirements, meet capital expenditures and discretionary investment needs, fund certain acquisition opportunities that may arise, including the asset exchange with Lafarge, and allow for payment of dividends for the foreseeable future. At September 30, 2011, the Corporation had $328 million of unused borrowing capacity under its Revolving Facility, subject to complying with the Ratio, and no available borrowings on its AR Credit Facility. The Credit Agreement expires on March 31, 2015 and the AR Credit Facility terminates on April 20, 2012.

Page 35 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

The Corporation may be required to obtain financing in order to fund certain strategic acquisitions, if any such opportunities arise, or to refinance outstanding debt. Any strategic acquisition of size would require an appropriate balance of newly-issued equity with debt in order to maintain an investment-grade credit rating. The Corporation is exposed to the credit markets, through the interest cost related to its variable rate debt, which includes borrowings under its Revolving Facility, Term Loan Facility and AR Credit Facility, and the interest cost related to its commercial paper program, to the extent that it is available to the Corporation. The Corporation’s credit ratings are investment-grade level. On April 28, 2011, Standard & Poor’s reaffirmed its BBB+ corporate credit rating and revised its outlook on the Corporation’s long-term rating to stable. On October 19, 2011, Moody’s reaffirmed its Baa3 corporate credit rating and stable rating outlook. While management believes its credit ratings will remain at an investment-grade level, no assurance can be given that these ratings will remain at those levels.

Contractual Obligations

At September 30, 2011, the Corporation’s contractual obligations, including interest, related to its Term Loan Facility were as follows (dollars in thousands):

	Total		< 1 yr		1-3 yrs.		3-5 yrs.
Long-term debt	$	250,000	$	5,000	$	10,000	$	235,000
Interest (off balance sheet)		16,771		4,909		9,519		2,343
Total	$	266,771	$	9,909	$	19,519	$	237,343

Management has the ability and intent to refinance its $100 million of outstanding borrowings on its AR Credit Facility with borrowings that will mature in more than twelve months. Management currently intends to maintain $20 million of outstanding borrowings on its Revolving Facility for longer than twelve months.

TRENDS AND RISKS    The Corporation outlined the risks associated with its business in its Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011. Management continues to evaluate its exposure to all operating risks on an ongoing basis.

Page 36 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

OUTLOOK

A variety of factors beyond the Corporation’s direct control continue to make forecasting future performance unclear. Of particular note is the status of long-term federal infrastructure funding and uncertainties about the timing and amount of such funding. However, management is pleased to see increased dialogue in Washington, D.C. regarding the need for a multi-year surface transportation bill and its role in jobs creation. While there is bipartisan Congressional agreement that infrastructure is a key and essential governmental priority, the national debt has created a heightened sensitivity with respect to all government spending.

National forecasts earlier this year predicted stabilization and improvements in the overall housing market, and the Corporation increased aggregates shipments to that sector in discrete geographic areas. However, the United States Census Bureau reported that nationally seasonally adjusted value of residential construction put in place declined slightly during the first eight months of 2011. Economists continue to be divided over both the timing of recovery in residential construction and the pace of recovery, complicating management’s outlook. Management believes that when this sector recovers, there will be a notable volume impact, and the Corporation is well-positioned to benefit from that upturn.

Given the uncertainty created by the absence of a long-term highway bill, management expects the infrastructure end-use market to be down in the mid-single digit range for 2011. While management anticipates a modest volume recovery in the commercial component of the Corporation’s nonresidential end-use market, aggregates shipments to the energy sector have declined from 2010 levels. Natural gas prices, the timing of lease commitments for oil and natural gas companies, geographic transitions and weather conditions continue to affect energy-sector activity. Overall, nonresidential end-use shipments for the year are likely to be down slightly. Management expects the rate of improvement in the residential end-use market to be comparable with 2010. Finally, ChemRock/Rail shipments should be down slightly compared with 2010. Accordingly, management is revising the Corporation’s volume guidance for 2011, largely based on the strength of the fourth quarter of 2010, which reflected dry weather and strong agricultural lime shipments. Management now expects aggregates product line shipments for full-year 2011 to decrease from 2% to 4%.

Despite lower volume guidance for the year, management remains confident that the Corporation’s pricing growth is sustainable and reaffirms its previous guidance. For the full year, management expects an increase in aggregates pricing ranging from 2% to 4%. These increases may not be uniform throughout the enterprise.

Page 37 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Aggregates product line direct production costs are expected to decline for the full year. However, lower annual production in response to the decline in shipments, when coupled with higher energy costs, is expected to result in a higher cost per ton for the aggregates product line. The Specialty Products segment should contribute approximately $60 million in pretax earnings for 2011, as economic recovery drives industrial demand for magnesia-based chemicals products and continued demand for environmental applications is driven by the United States’ focus on green technology and innovation.

Offsetting those factors over which the Corporation has little or no control are those items it does control: selling, general and administrative expenses should be lower in 2011, primarily due to reduced pension expense and after absorbing the nonrecurring early retirement benefit. Interest expense should be approximately $60 million in 2011, or $8 million less than 2010, resulting from the refinancing of $242 million of 6.875% Senior Notes with variable-rate borrowings under the Corporation’s outstanding credit facilities. The Corporation’s effective tax rate is expected to be 26%. Capital expenditures are forecast at $155 million for 2011, including the first $25 million of the $53 million Specialty Products project.

The 2011 estimated outlook includes management’s assessment of the likelihood of certain risk factors that will affect performance. The most significant risk to 2011 performance will be, as previously noted, the United States economy and its impact on construction activity.

Other risks related to the Corporation’s future performance include, but are not limited to: both price and volume and include a recurrence of widespread decline in aggregates volume negatively affecting aggregates price; the discontinuance of the federal gasoline tax or other revenue related to infrastructure construction; a greater-than-expected decline in infrastructure construction as a result of continued delays in traditional federal, ARRA, state and/or local infrastructure projects and continued uncertainty regarding the timing and amount of the federal highway bill; a decline in nonresidential construction; a slowdown in the residential construction recovery; or some combination thereof. Further, increased highway construction funding pressures resulting from either federal or state issues can affect profitability. Currently, nearly all states have general fund budget pressures driven by lower tax revenues. If these pressures negatively affect transportation budgets more than in the past, construction spending could be reduced. North Carolina and Texas, states which disproportionately affect the Corporation’s revenue and profitability, are among the states experiencing these fiscal pressures, although recent statistics indicate that tax revenues are increasing.

The Corporation’s principal business serves customers in construction aggregates-related markets. This concentration could increase the risk of potential losses on customer receivables; however, payment bonds normally posted on public projects, together with lien rights on private projects, help to mitigate the risk of uncollectible receivables. The level of aggregates demand in the Corporation’s end-use markets, production levels and the management of production costs will affect the operating leverage of the Aggregates business and, therefore, profitability. Production

Page 38 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

costs in the Aggregates business are also sensitive to energy prices, both directly and indirectly. Diesel and other fuels change production costs directly through consumption or indirectly in the increased cost of energy-related consumables, such as, steel, explosives, tires and conveyor belts. Fluctuating diesel pricing also affects transportation costs, primarily through fuel surcharges in the Corporation’s long-haul distribution network.

Transportation in the Corporation’s long-haul network, particularly barge availability on the Mississippi River system as well as rail cars and locomotive power to move trains, affects the Corporation’s ability to efficiently transport material into certain markets, most notably Texas, Florida and the Gulf Coast. The Aggregates business is also subject to weather-related risks that can significantly affect production schedules and profitability. Hurricane activity in the Atlantic Ocean and Gulf Coast generally is most active during the third and fourth quarters. The first and fourth quarters are most adversely affected by winter weather.

Risks to the 2011 outlook include shipment declines as a result of economic events beyond the Corporation’s control. In addition to the impact on nonresidential and residential construction, the Corporation is exposed to risk in its estimated outlook from credit markets and the availability of and interest cost related to its debt.

OTHER MATTERS    If you are interested in Martin Marietta Materials, Inc. stock, management recommends that, at a minimum, you read the Corporation’s current Annual Report and Forms 10-K, 10-Q and 8-K reports to the SEC over the past year. The Corporation’s recent proxy statement for the annual meeting of shareholders also contains important information. These and other materials that have been filed with the SEC are accessible through the Corporation’s website at www.martinmarietta.com and are also available at the SEC’s website at www.sec.gov. You may also write or call the Corporation’s Corporate Secretary, who will provide copies of such reports.

Investors are cautioned that all statements in this Quarterly Report that relate to the future involve risks and uncertainties, and are based on assumptions that the Corporation believes in good faith are reasonable but which may be materially different from actual results. Forward-looking statements give the investor the Corporation’s expectations or forecasts of future events. You can identify these statements by the fact that they do not relate only to historical or current facts. They may use words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “plan,” “believe,” and other words of similar meaning in connection with future events or future operating or financial performance. Any or all of the Corporation’s forward-looking statements here and in other publications may turn out to be wrong.

Page 39 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

Factors that the Corporation currently believes could cause actual results to differ materially from the forward-looking statements in this Quarterly Report on Form 10-Q include, but are not limited to, the performance of the United States economy; widespread decline in aggregates pricing; the discontinuance of the federal gasoline tax or other revenue related to infrastructure construction; the level and timing of federal and state transportation funding, including federal stimulus projects and most particularly in North Carolina, one of the Corporation’s largest and most profitable states, and Texas, Georgia, Iowa and Louisiana, which when coupled with North Carolina, represented 55% of 2010 net sales of the Aggregates business; the ability of states and/or other entities to finance approved projects either with tax revenues or alternative financing structures; levels of construction spending in the markets the Corporation serves; a decline in the commercial construction market, notably office and retail space; a slowdown in residential construction recovery; unfavorable weather conditions, particularly Atlantic Ocean hurricane activity, the early onset of winter and the impact of a drought in the markets served by the Corporation; the volatility of fuel costs, particularly diesel fuel, and the impact on the cost of other consumables, namely steel, explosives, tires and conveyor belts; continued increases in the cost of other repair and supply parts; transportation availability, notably barge availability on the Mississippi River system and the availability of railcars and locomotive power to move trains to supply the Corporation’s Texas, Florida and Gulf Coast markets; increased transportation costs, including increases from higher passed-through energy costs and higher volumes of rail and water shipments; availability and cost of construction equipment in the United States; weakening in the steel industry markets served by the Corporation’s dolomitic lime products; inflation and its effect on both production and interest costs; ability to successfully integrate acquisitions quickly and in a cost-effective manner and achieve anticipated profitability to maintain compliance with the Corporation’s leverage ratio debt covenant; changes in tax laws, the interpretation of such laws and/or administrative practices that would increase the Corporation’s tax rate; violation of the debt covenant if price and volume return to previous levels of instability; downward pressure on the Corporation’s common stock price and its impact on goodwill impairment evaluations; and other risk factors listed from time to time found in the Corporation’s filings with the Securities and Exchange Commission. Other factors besides those listed here may also adversely affect the Corporation, and may be material to the Corporation. The Corporation assumes no obligation to update any such forward-looking statements.

Page 40 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Third Quarter Ended September 30, 2011

(Continued)

INVESTOR ACCESS TO COMPANY FILINGS    Shareholders may obtain, without charge, a copy of Martin Marietta Materials, Inc.’s Annual Report on Form 10-K, as filed with the Securities and Exchange Commission for the fiscal year ended December 31, 2010, by writing to:

Martin Marietta Materials, Inc.

Attn:    Corporate Secretary

2710 Wycliff Road

Raleigh, North Carolina 27607-3033

Additionally, Martin Marietta Materials, Inc.’s Annual Report, press releases and filings with the Securities and Exchange Commission, including Forms 10-K, 10-Q, 8-K and 11-K, can generally be accessed via the Corporation’s website. Filings with the Securities and Exchange Commission accessed via the website are available through a link with the Electronic Data Gathering, Analysis, and Retrieval (“EDGAR”) system. Accordingly, access to such filings is available upon EDGAR placing the related document in its database. Investor relations contact information is as follows:

Telephone: (919) 783-4540

Website address: www.martinmarietta.com

Information included on the Corporation’s website is not incorporated into, or otherwise create a part of, this report.

Page 41 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

Item 3.  Quantitative and Qualitative Disclosures About Market Risk.

The Corporation’s operations are highly dependent upon the interest rate-sensitive construction and steelmaking industries. Consequently, these marketplaces could experience lower levels of economic activity in an environment of rising interest rates or escalating costs.

Management has considered the current economic environment and its potential impact to the Corporation’s business. Demand for aggregates products, particularly in the nonresidential and residential construction markets, could decline if companies and consumers are unable to obtain financing for construction projects or if the economic recession causes delays or cancellations to capital projects. Additionally, uncertainty regarding federal highway funding, declining tax revenues and state budget deficits have negatively affected states’ abilities to finance infrastructure construction projects.

Demand in the residential construction market is affected by interest rates. The Federal Reserve kept the federal funds rate at zero percent during the quarter ended September 30, 2011. The residential construction market accounted for approximately 7% of the Corporation’s aggregates product line shipments in 2010.

Aside from these inherent risks from within its operations, the Corporation’s earnings are affected also by changes in short-term interest rates as a result of any temporary cash investments, including money market funds and Eurodollar time deposit accounts; any outstanding variable-rate borrowing facilities; and defined benefit pension plans. Additionally, the Corporation’s earnings are affected by energy costs. The Corporation has no counterparty risk.

Variable-Rate Borrowing Facilities.    The Corporation has a $600 million Credit Agreement which supports its commercial paper program and a $100 million AR Credit Facility. Borrowings under these facilities and the commercial paper program bear interest at a variable interest rate. A hypothetical 100-basis-point increase in interest rates on outstanding borrowings of $370 million, which is the outstanding balance at September 30, 2011, would increase interest expense by $3.7 million on an annual basis.

Pension Expense.    The Corporation’s results of operations are affected by its pension expense. Assumptions that affect this expense include the discount rate and, for the defined benefit pension plans only, the expected long-term rate of return on assets. Therefore, the Corporation has interest rate risk associated with these factors. The impact of hypothetical changes in these assumptions on the Corporation’s annual pension expense is discussed in the Corporation’s Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011.

Page 42 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

Energy Costs.    Energy costs, including diesel fuel, natural gas and liquid asphalt, represent significant production costs for the Corporation. A hypothetical 10% change in the Corporation’s energy costs in 2011 as compared with 2010, assuming constant volumes, would impact annual 2011 pretax earnings by approximately $15.6 million.

Aggregate Risk for Interest Rates and Energy Costs.    Pension expense for 2011 was calculated based on assumptions selected at December 31, 2010. Therefore, interest rate risk in 2011 is limited to the potential effect related to the Corporation’s borrowings under variable-rate facilities. The effect of a hypothetical increase in interest rates of 1% on the $370 million of variable-rate borrowings outstanding at September 30, 2011 would increase interest expense on an annual basis by $3.7 million. Additionally, a 10% change in energy costs compared with 2010 would impact annual pretax earnings by $15.6 million.

Item 4.  Controls and Procedures

As of September 30, 2011, an evaluation was performed under the supervision and with the participation of the Corporation’s management, including the Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and the operation of the Corporation’s disclosure controls and procedures. Based on that evaluation, the Corporation’s management, including the Chief Executive Officer and Chief Financial Officer, concluded that the Corporation’s disclosure controls and procedures were effective as of September 30, 2011. There were no changes in the Corporation’s internal control over financial reporting during the most recently completed fiscal quarter that materially affected, or are reasonably likely to materially affect, the Corporation’s internal control over financial reporting.

Page 43 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

Item 1.  Legal Proceedings.

Reference is made to Part I. Item 3. Legal Proceedings of the Martin Marietta Materials, Inc. Annual Report on Form 10-K for the year ended December 31, 2010.

Item 1A.  Risk Factors.

Reference is made to Part I. Item 1A. Risk Factors and Forward-Looking Statements of the Martin Marietta Materials, Inc. Annual Report on Form 10-K for the year ended December 31, 2010.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds.

ISSUER PURCHASES OF EQUITY SECURITIES

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number of Shares that May Yet be Purchased Under the Plans or Programs
July 1, 2011 –   July 31, 2011		—	$	—		—		5,041,871
August 1, 2011 –   August 31, 2011		—	$	—		—		5,041,871
September 1, 2011 –   September 30, 2011		—	$	—		—		5,041,871
Total		—	$	—		—		5,041,871

The Corporation’s initial stock repurchase program, which authorized the repurchase of 2.5 million shares of common stock, was announced in a press release dated May 6, 1994, and has been updated as appropriate. The program does not have an expiration date.

Page 44 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

(Continued)

Item 5.    Other Information.

The operation of the Corporation’s domestic aggregates quarries and mines is subject to regulation by the federal Mine Safety and Health Administration (MSHA) under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). MSHA inspects the Corporation’s quarries and mines on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. Whenever MSHA issues a citation or order, it also generally proposes a civil penalty, or fine, related to the alleged violation. Citations or orders may be contested and appealed, and as part of that process, are often reduced in severity and amount, and are sometimes dismissed.

Under the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”), the Corporation is required to present information regarding certain mining safety and health citations which MSHA has issued with respect to its aggregates mining operations in its periodic reports filed with the Securities and Exchange Commission (SEC). In evaluating this information, consideration should be given to factors such as: (i) the number of citations and orders will vary depending on the size of the quarry or mine and types of operations (underground or surface), (ii) the number of citations issued will vary from inspector to inspector and location to location, and (iii) citations and orders can be contested and appealed, and in that process, may be reduced in severity and amount, and are sometimes dismissed. The Corporation believes the following mine safety disclosures meet the requirements of Section 1503(a) of the Dodd-Frank Act. However, as of the date of this report, the SEC has not issued final rules and regulations under these provisions; therefore, it is possible that any final rules adopted by the SEC will require disclosures to be presented in a different form. Certain information is provided in response to proposed rules of the SEC issued under these provisions, but the Corporation cannot be assured of what the final rules might be in this regard. The disclosures reflect U.S. mining operations only, as the requirements of the Dodd-Frank Act do not apply to the Corporation’s quarries and mines operated outside the United States.

The Corporation presents the following items regarding certain mining safety and health matters for the three months ended September 30, 2011:

• Total number of violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard under section 104 of the Mine Act for which the Corporation has received a citation from MSHA (hereinafter, “Mine Act Section 104 Significant and Substantial Citations”). If MSHA determines that a violation of a mandatory health or safety standard is likely to result in a reasonably serious injury or illness under the unique circumstance contributed to by the violation, MSHA will classify the violation as a “significant and substantial” violation (commonly referred to as a “S&S” violation). MSHA inspectors will classify each citation or order written as a “S&S” violation or not.

Page 45 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

(Continued)

• Total number of orders issued under section 104(b) of the Mine Act (hereinafter, “Mine Act Section 104(b) Orders”). These orders are issued for situations in which MSHA determines a previous violation covered by a Section 104(a) citation has not been totally abated within the prescribed time period, so a further order is needed to require the mine operator to immediately withdraw all persons (except authorized persons) from the affected area of a quarry or mine.

• Total number of citations and orders for unwarrantable failure of the mine operator to comply with mandatory health or safety standards under Section 104(d) of the Mine Act (hereinafter, “Mine Act Section 104(d) Unwarrantable Failure Citations/Orders”). These violations are similar to those described above, but the standard is that the violation could significantly and substantially contribute to the cause and effect of a safety or health hazard, but the conditions do not cause imminent danger, and the MSHA inspector finds that the violation is caused by an unwarranted failure of the operator to comply with the health and safety standards.

• Total number of flagrant violations under section 110(b)(2) of the Mine Act (hereinafter, “Mine Act Section 110(b) Flagrant Violations”). These violations are penalty violations issued if MSHA determines that violations are “flagrant”, for which civil penalties may be assessed. A “flagrant” violation means a reckless or repeated failure to make reasonable efforts to eliminate a known violation of a mandatory health or safety standard that substantially and proximately caused, or reasonably could have been expected to cause, death or serious bodily injury.

• Total number of imminent danger orders issued under section 107(a) of the Mine Act (hereinafter, “Mine Act Section 107(a) Imminent Danger Orders”). These orders are issued for situations in which MSHA determines an imminent danger exists in the quarry or mine and results in orders of immediate withdrawal of all persons (except certain authorized persons) from the area of the quarry or mine affected by its condition until the imminent danger and the underlying conditions causing the imminent danger no longer exist.

• Total dollar value of proposed assessments from MSHA under the Mine Act. These are the amounts of proposed assessments issued by MSHA with each citation or order for the time period covered by the reports. Penalties are assessed by MSHA according to a formula that considers a number of factors, including the mine operator’s history, size, negligence, gravity of the violation, good faith in trying to correct the violation promptly, and the effect of the penalty on the operator’s ability to continue in business.

Page 46 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

(Continued)

Location *	Mine Act Section 104 Significant and Substantial Citations	Mine Act Section 104(b) Orders	Mine Act Section 104(d) Unwarrantable Failure Citations/Orders	Mine Act Section 107(a) Imminent Danger Orders	Total Dollar Value of Proposed MSHA Assessments
Alden Shop	-	-	-	-	$	100
Ames	4	-	-	-		5,263
Auburn, GA	-	-	-	-		200
Bakers	1	-	-	-		393
Beckman	1	-	-	-		-
Bessemer City	-	-	-	-		200
Castle Hayne	2	-	-	1		-
Cedarville	-	-	-	-		200
Dubois	-	-	-	-		354
Durham	1	-	-	-		3,657
Forsyth	-	-	-	-		100
Fort Dodge	1	-	-	-		-
Garner	1	-	-	-		-
Granite Canyon	-	-	-	-		300
Guernsey	2	-	-	-		-
Helotes	-	-	-	-		200
Jamestown	1	-	-	-		1,061
Kentucky Ave	1	-	-	-		592
Kings Mountain	-	-	-	-		100
Milford	4	-	-	-		-
Parkville	1	-	-	-		585
Paulding	1	-	-	-		-
Randolph Deep	1	-	-	-		-
Reidsville	-	-	-	-		108
Rocky River	-	-	-	-		100
Sawyer	-	-	-	-		400
Spanish Springs	5	-	-	-		-
Stamper	1	-	-	-		660
Three Rivers	4	-	-	-		18,657
Weeping Water	1	-	-	-		2,568
Xenia	-	-	-	-		100
Total	33	0	0	1	$	35,898

* Only locations that have received violations, citations, orders and/or proposed assessments issued under the Mine Act have been included in this table.

Page 47 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

(Continued)

The preceding table lists the total dollar value of proposed assessments from MSHA under the Mine Act for the three months ended September 30, 2011. Some of these assessments were paid by the Corporation during the three-month period in question or have been paid subsequent to September 30, 2011. Other of these assessments have been contested by the Corporation in accordance with its rights and procedures. Some of the assessments may have been reduced in severity or amount, or even dismissed. The total dollar value of all assessments from MSHA under the Mine Act remaining outstanding as of September 30, 2011 was approximately $0.6 million.

For the three months ended September 30, 2011, none of the Corporation’s aggregates quarries or mines received written notice from MSHA of (i) a flagrant violation under section 110(b)(2) of the Mine Act; (ii) a pattern of violations of mandatory health or safety standards that are of such nature as could have significantly and substantially contributed to the cause and effect of other mine health or safety hazards under section 104(e) of the Mine Act; or (iii) the potential to have such a pattern. If MSHA determines that a mine has a “pattern” of these types of violations, or the potential to have such a pattern, MSHA is required to notify the mine operator of the existence of such a thing. During the three months ended September 30, 2011, the Corporation experienced no fatalities at any of its aggregates quarries or mines.

The Federal Mine Safety and Health Review Commission (the “Commission”) is an independent adjudicative agency that provides administrative trial and appellate review of legal disputes arising under the Mine Act. The cases may involve, among other questions, challenges by operators to citations, orders and penalties they have received from MSHA, or complaints of discrimination by miners under Section 105 of the Mine Act. As of September 30, 2011, the Corporation has a total of 55 matters pending before the Commission. This includes legal actions that were initiated prior to the three months ended September 30, 2011 and which do not necessarily relate to the citations, orders or proposed assessments issued by MSHA during such three-month period.

Page 48 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

PART II-OTHER INFORMATION

(Continued)

Item 6. Exhibits.

Exhibit    No.	Document
31.01	Certification dated November 7, 2011 of Chief Executive Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.02	Certification dated November 7, 2011 of Chief Financial Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.01	Written Statement dated November 7, 2011 of Chief Executive Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.02	Written Statement dated November 7, 2011 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase

Page 49 of 51

SIGNATURES

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.

MARTIN MARIETTA MATERIALS, INC.

(Registrant)

Date: November 7, 2011	By:	/s/ Anne H. Lloyd
		Anne H. Lloyd
		Executive Vice President and             Chief Financial Officer

Page 50 of 51

MARTIN MARIETTA MATERIALS, INC. AND CONSOLIDATED SUBSIDIARIES

FORM 10-Q

For the Quarter Ended September 30, 2011

EXHIBIT INDEX

Exhibit No.	Document
31.01	Certification dated November 7, 2011 of Chief Executive Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.02	Certification dated November 7, 2011 of Chief Financial Officer pursuant to Securities and Exchange Act of 1934 rule 13a-14 as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.01	Written Statement dated November 7, 2011 of Chief Executive Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.02	Written Statement dated November 7, 2011 of Chief Financial Officer required by 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase

Page 51 of 51

EX-31.01

EXHIBIT 31.01

CERTIFICATION PURSUANT TO SECURITIES AND EXCHANGE ACT OF 1934 RULE 13a-14 AS ADOPTED PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002

I, C. Howard Nye, certify that:

1. I have reviewed this Form 10-Q of Martin Marietta Materials, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	November 7, 2011	By:	/s/ C. Howard Nye
			C. Howard Nye
			President and Chief Executive Officer

EX-31.02

EXHIBIT 31.02

CERTIFICATION PURSUANT TO SECURITIES AND EXCHANGE ACT OF 1934 RULE 13a-14 AS ADOPTED PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT OF 2002

I, Anne H. Lloyd, certify that:

1. I have reviewed this Form 10-Q of Martin Marietta Materials, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal controls over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	November 7, 2011	By:	/s/ Anne H. Lloyd
			Anne H. Lloyd
			Executive Vice President and          Chief Financial Officer

EX-32.01

EXHIBIT 32.01

Written Statement Pursuant to 18 U.S.C. 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q for the period ended September 30, 2011 (the “Report”) of Martin Marietta Materials, Inc. (the “Registrant”), as filed with the Securities and Exchange Commission on the date hereof, I, C. Howard Nye, the Chief Executive Officer of the Registrant, certify, to the best of my knowledge, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ C. Howard Nye

C. Howard Nye

Chief Executive Officer

Dated: November 7, 2011

A signed original of this written statement required by Section 906 has been provided to Martin Marietta Materials, Inc. and will be retained by Martin Marietta Materials, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.02

EXHIBIT 32.02

Written Statement Pursuant to 18 U.S.C. 1350,

As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Quarterly Report on Form 10-Q for the period ended September 30, 2011 (the “Report”) of Martin Marietta Materials, Inc. (the “Registrant”), as filed with the Securities and Exchange Commission on the date hereof, I, Anne H. Lloyd, the Chief Financial Officer of the Registrant, certify, to the best of my knowledge, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

/s/ Anne H. Lloyd

Anne H. Lloyd

Executive Vice President and
Chief Financial Officer

Dated: November 7, 2011

A signed original of this written statement required by Section 906 has been provided to Martin Marietta Materials, Inc. and will be retained by Martin Marietta Materials, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

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Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Equity:
Common stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock, par value	$ 0.01	$ 0.01	$ 0.01

XML

Consolidated Statements Of Earnings (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements Of Earnings
Net Sales	$ 463,985	$ 443,709	$ 1,196,931	$ 1,182,054
Freight and delivery revenues	70,771	65,692	187,284	172,920
Total revenues	534,756	509,401	1,384,215	1,354,974
Cost of sales	352,520	329,900	967,873	930,906
Freight and delivery costs	70,771	65,692	187,284	172,920
Total cost of revenues	423,291	395,592	1,155,157	1,103,826
Gross Profit	111,465	113,809	229,058	251,148
Selling, general & administrative expenses	33,487	31,235	94,386	98,365
Research and development		114	2	149
Other operating (income) and expenses, net	(1,021)	(1,394)	(1,213)	(9,030)
Earnings from Operations	78,999	83,854	135,883	161,664
Interest expense	13,394	17,104	45,284	51,540
Other nonoperating (income) and expenses, net	2,146	(545)	2,220	189
Earnings from continuing operations before taxes on income	63,459	67,295	88,379	109,935
Income tax expense	13,374	14,061	20,080	26,615
Earnings from Continuing Operations	50,085	53,234	68,299	83,320
Gain on discontinued operations, net of related tax expense (benefit) of $138, ($37), $121 and $12, respectively	247	22	191	135
Consolidated net earnings	50,332	53,256	68,490	83,455
Less: Net earnings attributable to noncontrolling interests	1,176	1,266	949	1,246
Net Earnings Attributable to Martin Marietta Materials, Inc.	49,156	51,990	67,541	82,209
Net Earnings Attributable to Martin Marietta Materials, Inc.
Earnings from continuing operations	48,909	51,968	67,350	82,074
Earnings from discontinued operations	247	22	191	135
Net Earnings Attributable to Martin Marietta Materials, Inc.	$ 49,156	$ 51,990	$ 67,541	$ 82,209
Net Earnings Attributable to Martin Marietta Materials, Inc. Per Common Share
Basic from continuing operations attributable to common shareholders	$ 1.07	$ 1.13	$ 1.47	$ 1.79
Discontinued operations attributable to common shareholders
Basic net earnings available to common shareholders	$ 1.07	$ 1.13	$ 1.47	$ 1.79
Diluted from continuing operations attributable to common shareholders	$ 1.07	$ 1.13	$ 1.46	$ 1.78
Discontinued operations attributable to common shareholders
Diluted net earnings available to common shareholders	$ 1.07	$ 1.13	$ 1.46	$ 1.78
Weighted-Average Common Shares Outstanding
Basic	45,690	45,526	45,634	45,463
Diluted	45,799	45,678	45,783	45,639
Cash Dividends Per Common Share	$ 0.40	$ 0.40	$ 1.20	$ 1.20

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Inventories, Net (Tables)

9 Months Ended

Sep. 30, 2011

Inventories, Net

Components Of Inventories

	September 30, 2011		December 31, 2010		September 30, 2010
	(Dollars in Thousands)
Finished products	$	362,924	$	358,138	$	350,842
Products in process and raw materials		9,483		13,842		14,310
Supplies and expendable parts		53,624		46,958		46,566
		426,031		418,938		411,718
Less allowances		(88,301)		(87,044)		(87,898)
Total	$	337,730	$	331,894	$	323,820

XML

Document And Entity Information	9 Months Ended
	Sep. 30, 2011	Oct. 21, 2011
Document And Entity Information
Document Type	10-Q
Document Period End Date	Sep. 30, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Registrant Name	MARTIN MARIETTA MATERIALS INC
Entity Central Index Key	0000916076
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		45,696,740

XML

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2011

Income Taxes

Estimated Effective Income Tax Rate

	Nine Months Ended September 30,
	2011	2010
Estimated effective income tax rate:
Continuing operations	22.7%	24.2%
Discontinued operations	38.8%	8.2%
Consolidated overall	22.8%	24.2%

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Goodwill And Intangible Assets

9 Months Ended

Sep. 30, 2011

Goodwill And Intangible Assets

Goodwill And Intangible Assets

4. Goodwill and Intangible Assets

The following table shows changes in goodwill, all of which relate to the Aggregates business, by reportable segment and in total (dollars in thousands):

	Nine Months Ended September 30, 2011
	Mideast Group		Southeast Group		West Group		Total
Balance at beginning of period	$	122,052	$	105,870	$	398,605	$	626,527
Acquisitions		—		—		12,512		12,512
Balance at end of period	$	122,052	$	105,870	$	411,117	$	639,039

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Pension And Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2011

Pension And Postretirement Benefits

Estimated Components Of The Recorded Net Periodic Benefit Cost For Pension And Postretirement Benefits

8. Pension and Postretirement Benefits

The following presents the estimated components of the recorded net periodic benefit cost for pension and postretirement benefits (dollars in thousands):

		$12,9961		$12,9961		$12,9961		$12,9961
	Three Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	2,815	$	2,761	$	88	$	137
Interest cost		5,808		5,753		556		688
Expected return on assets		(6,121)		(5,255)		—		—
Amortization of:
Prior service cost (credit)		133		146		(435)		(372)
Actuarial loss (gain)		1,581		2,554		(21)		—
Settlement charge		332		923		—		—
Total net periodic benefit cost	$	4,548	$	6,882	$	188	$	453

	Nine Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	8,446	$	8,282	$	263	$	411
Interest cost		17,425		17,259		1,669		2,063
Expected return on assets		(18,364)		(15,766)		—		—
Amortization of:
Prior service cost (credit)		400		437		(1,306)		(1,117)
Actuarial loss (gain)		4,743		7,661		(64)		—
Settlement charge		346		1,006		—		—
Total net periodic benefit cost	$	12,996	$	18,879	$	562	$	1,357

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Business Segments (Financial Data For Continuing Operations For The Corporation's Reportable Business Segments) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Total revenues	$ 534,756	$ 509,401	$ 1,384,215	$ 1,354,974
Net sales, Total	463,985	443,709	1,196,931	1,182,054
Earnings (Loss) from operations, Total	78,999	83,854	135,883	161,664
Mideast Group [Member]
Total revenues	144,990	144,691	370,793	375,729
Net sales, Total	131,579	133,607	341,308	348,524
Earnings (Loss) from operations, Total	32,740	38,755	66,332	80,338
Southeast Group [Member]
Total revenues	103,832	115,713	287,340	313,251
Net sales, Total	84,475	91,216	232,469	251,440
Earnings (Loss) from operations, Total	(3,061)	1,414	(20,121)	(144)
West Group [Member]
Total revenues	230,733	202,895	563,092	521,330
Net sales, Total	197,589	176,623	474,070	450,212
Earnings (Loss) from operations, Total	39,659	33,942	53,759	54,654
Corporate [Member]
Earnings (Loss) from operations, Total	(5,912)	(2,300)	(14,071)	(13,251)
Total Aggregates Business [Member]
Total revenues	479,555	463,299	1,221,225	1,210,310
Net sales, Total	413,643	401,446	1,047,847	1,050,176
Earnings (Loss) from operations, Total	69,338	74,111	99,970	134,848
Specialty Products [Member]
Total revenues	55,201	46,102	162,990	144,664
Net sales, Total	50,342	42,263	149,084	131,878
Earnings (Loss) from operations, Total	$ 15,573	$ 12,043	$ 49,984	$ 40,067

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Financial Instruments (Details) (USD $)	9 Months Ended
	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Financial Instruments
Maturities of cash equivalents	three
Percentage of customer sales in top five sales states for aggregate business	55.00%
Long-term notes and debentures, carrying value	$ 1,045,485	$ 1,030,759	$ 1,031,129
Long-term notes and debentures, fair value	$ 1,072,235	$ 1,051,704	$ 1,099,298

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Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2011

Long-Term Debt

Long-Term Debt

	September 30,           2011		December 31,           2010		September 30,           2010
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	298,428	$	298,288	$	298,242
7% Debentures, due 2025		124,411		124,393		124,388
6.25% Senior Notes, due 2037		247,906		247,882		247,874
6.875% Notes, due 2011		—		242,129		242,118
Term Loan Facility, due 2015, interest rate of 1.99% at September 30, 2011		250,000		—		—
Term Loan, due 2012, interest rate of 3.29% at December 31, 2010		—		111,750		111,750
Revolving Facility, interest rate of 1.61% at September 30, 2011		20,000		—		—
AR Credit Facility, interest rate of 1.60% at September 30, 2011		100,000		—		—
Other notes		4,740		6,317		6,757
Total debt		1,045,485		1,030,759		1,031,129
Less current maturities		(7,150)		(248,714)		(245,423)
Long-term debt	$	1,038,335	$	782,045	$	785,706

Commitment Amounts Under Senior Unsecured Credit Facilities

Lender	Revolving Facility       Commitment		Term Loan Facility       Commitment
	(Dollars in Thousands)
JPMorgan Chase Bank, N.A.	$	46,667	$	33,333
Wells Fargo Bank, N.A.		46,667		33,333
SunTrust Bank		46,667		33,333
Branch Banking and Trust Company		46,667		33,333
Bank of America, N.A.		46,667		33,333
Citibank, N.A.		29,167		20,833
Deutsche Bank AG New York Branch		29,167		20,833
The Northern Trust Company		29,167		20,833
Comerica Bank		14,582		10,418
Regions Bank		14,582		10,418
Total	$	350,000	$	250,000

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Commitments And Contingencies

9 Months Ended

Sep. 30, 2011

Commitments And Contingencies

Commitments and Contingencies

9. Commitments and Contingencies

Legal and Administrative Proceedings

The Corporation is engaged in certain legal and administrative proceedings incidental to its normal business activities. In the opinion of management and counsel, based upon currently-available facts, it is remote that the ultimate outcome of any litigation and other proceedings, including those pertaining to environmental matters, relating to the Corporation and its subsidiaries, will have a material adverse effect on the overall results of the Corporation's operations, its cash flows or its financial position.

During the nine months ended September 30, 2010, the Corporation settled legal proceedings relating to its Greenwood, Missouri, operation for approximately $7,000,000. In connection with the settlement, the Corporation reversed the excess of the established legal reserve, thereby increasing net earnings for the nine months ended September 30, 2010 by $2,751,000, or $0.06 per diluted share.

Guarantee of Affiliate

In July 2010, the Corporation entered into a reimbursement and indemnification agreement with Fifth Third Bank ("Fifth Third") to guarantee the repayment of amounts borrowed by an affiliate under a $20,000,000 revolving line of credit provided by Fifth Third and a guaranty agreement with Bank of America, N.A., to guarantee $12,400,000 of payment obligations of its affiliate under equipment lease agreements. The affiliate agreed to reimburse and indemnify the Corporation for any payments and expenses the Corporation may incur from these agreements. The Corporation holds a subordinate lien of the affiliate's assets as collateral for potential payments under the agreements. On April 8, 2011, the affiliate converted its equipment leasing agreements with Bank of America, N.A. to a five-year $6,200,000 amortizing loan and the Corporation executed a reaffirmation of guaranty with respect to such loan. On July 20, 2011, the affiliate's $20,000,000 revolving line of credit was increased to $24,000,000. This line of credit expires in July 2013. Additionally, the reimbursement and indemnification agreement related to this line of credit was terminated and replaced by an unconditional guaranty of payment from the Corporation. The affiliate restated its reimbursement and indemnity obligations to the Corporation, and the Corporation retained its subordinate lien on the assets of the affiliate.

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Consolidated Statement Of Total Equity (Parenthetical) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011
Tax benefit on adjustment for funded status of pension and postretirement benefit plans	$ 6,663
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	283
Total Shareholders' Equity [Member]
Tax benefit on adjustment for funded status of pension and postretirement benefit plans	6,663
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	283
Accumulated Other Comprehensive Loss [Member]
Tax benefit on adjustment for funded status of pension and postretirement benefit plans	6,663
Tax benefit on amortization of terminated value of forward starting interest rate swap agreements into interest expense	$ 283

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Long-Term Debt (Narrative) (Details) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

1 Months Ended

1 Months Ended

9 Months Ended

9 Months Ended

12 Months Ended

1 Months Ended

Mar. 31, 2011

Sep. 30, 2011

Mar. 31, 2011

Sep. 30, 2010

Sep. 30, 2011

Sep. 30, 2010

Dec. 31, 2010

Sep. 30, 2011

Maximum [Member]

Unrestricted Cash Reduction [Member]

Sep. 30, 2011

Minimum [Member]

Unrestricted Cash Reduction [Member]

Sep. 30, 2011

Unrestricted Cash Reduction [Member]

Sep. 30, 2011

Including Acquisition Bridge Debt [Member]

Sep. 30, 2011

Excluding Acquisition Bridge Debt [Member]

Apr. 30, 2011

AR Credit Facility [Member]

Sep. 30, 2011

AR Credit Facility [Member]

Mar. 31, 2011

AR Credit Facility [Member]

Apr. 30, 2011

6.875% Notes, Due 2011 [Member]

Sep. 30, 2011

6.875% Notes, Due 2011 [Member]

Dec. 31, 2010

6.875% Notes, Due 2011 [Member]

Sep. 30, 2010

6.875% Notes, Due 2011 [Member]

Sep. 30, 2011

6.6% Senior Notes, Due 2018 [Member]

Dec. 31, 2010

6.6% Senior Notes, Due 2018 [Member]

Sep. 30, 2010

6.6% Senior Notes, Due 2018 [Member]

Mar. 31, 2011

Term Loan Due 2012 [Member]

Mar. 31, 2011

Term Loan Facility [Member]

Mar. 31, 2011

Revolving Credit Facility [Member]

Credit facility commitment

$ 100,000,000

$ 250,000,000

$ 350,000,000

Floating rate senior note repaid

242,140,000

Outstanding borrowing under credit facility

100,000,000

Long-term debt

1,045,485,000

1,031,129,000

1,045,485,000

1,031,129,000

1,030,759,000

242,129,000

242,118,000

298,428,000

298,288,000

298,242,000

Line of credit facility, interest rate description

one-month LIBOR plus 1.35%

one-month LIBOR plus 1%

Additional borrowings under AR credit facility

100,000,000

Annual principal payment of debt

5,000,000

Repayment of debt

111,750,000

Debt instrument interest rate

the Federal Funds rate plus 0.5%

Debt instrument maturity period

March 31, 2015

April 20, 2012

2011

2018

2012

Interest rate on notes

6.875%

6.875%

6.60%

Debt covenant

The Credit Agreement and the AR Credit Facility, as amended, require the Corporation's ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve month period (the "Ratio") to not exceed 3.5x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the AR Credit Facility, consolidated debt, including debt guaranteed by the Corporation, may be reduced by the Corporation's unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation.

3.5x

3.75x

Reduction of consolidated debt in the debt ratio calculation

200,000,000

50,000,000

Additional interest expense

242,000

226,000

715,000

667,000

Increase in annual interest expense due to ongoing amortization of the terminated value of the swap agreements

$ 1,000,000

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Financial Instruments

9 Months Ended

Sep. 30, 2011

Financial Instruments

Financial Instruments

6. Financial Instruments

The Corporation's financial instruments include temporary cash investments, accounts receivable, notes receivable, bank overdraft, publicly registered long-term notes, debentures and other long-term debt.

Temporary cash investments are placed primarily in money market funds and Eurodollar time deposits with the following financial institutions: Bank of America, N.A., Branch Banking and Trust Company, JPMorgan Chase Bank, N.A., Regions Financial Corporation and Wells Fargo Bank, N.A. The Corporation's cash equivalents have maturities of less than three months. Due to the short maturity of these investments, they are carried on the consolidated balance sheets at cost, which approximates fair value.

Customer receivables are due from a large number of customers, primarily in the construction industry, and are dispersed across wide geographic and economic regions. However, customer receivables are more heavily concentrated in certain states (namely, Texas, North Carolina, Georgia, Iowa and Louisiana which accounted for approximately 55% of the Aggregate business' 2010 net sales). The estimated fair values of customer receivables approximate their carrying amounts.

Notes receivable are not publicly traded. However, using current market interest rates, but excluding adjustments for credit worthiness, if any, management estimates that the fair value of notes receivable approximates the carrying amount.

The bank overdraft represents the float of outstanding checks. The estimated fair value of the bank overdraft approximates its carrying value.

The carrying values and fair values of the Corporation's long-term debt were $1,045,485 and $1,072,235, respectively, at September 30, 2011; $1,030,759 and $1,051,704, respectively, at December 31, 2010; and $1,031,129 and $1,099,298, respectively, at September 30, 2010. The estimated fair value of the Corporation's publicly registered long-term notes and debentures was estimated based on quoted market prices. The estimated fair value of other borrowings approximates its carrying amount.

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Supplemental Cash Flow Information

9 Months Ended

Sep. 30, 2011

Supplemental Cash Flow Information

Supplemental Cash Flow Information

11. Supplemental Cash Flow Information

The following table presents the components of the change in other assets and liabilities, net:

	Nine Months Ended September 30,
	2011		2010
	(Dollars in Thousands)
Other current and noncurrent assets	$	2,325	$	3,108
Accrued salaries, benefits and payroll taxes		(2,324)		(2,237	)
Accrued insurance and other taxes		8,366		8,134
Accrued income taxes		22,208		11,177
Accrued pension, postretirement and postemployment benefits		(16,046)		(10,849	)
Other current and noncurrent liabilities		10,450		3,306
	$	24,979	$	12,639

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Income Taxes

9 Months Ended

Sep. 30, 2011

Income Taxes

Income Taxes

7. Income Taxes

Income tax benefit/expense reported in the Corporation's consolidated statements of earnings includes income tax benefit/expense on earnings attributable to both the Corporation and its noncontrolling interests.

	Nine Months Ended September 30,
	2011	2010
Estimated effective income tax rate:
Continuing operations	22.7%	24.2%
Discontinued operations	38.8%	8.2%
Consolidated overall	22.8%	24.2%

The Corporation's effective income tax rate reflects the effect of federal and state income taxes and the impact of differences in book and tax accounting arising from the net permanent benefits associated with the depletion allowances for mineral reserves and the domestic production deduction. The effective income tax rates for discontinued operations reflect the tax effects of individual operations' transactions and are not indicative of the Corporation's overall effective income tax rate.

The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2011, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2011, increased consolidated net earnings for the nine months ended September 30, 2011 by $3,636,000, or $0.08 per diluted share. The consolidated overall estimated effective income tax rate for the nine months ended September 30, 2011 included the following discrete events: the favorable effective settlement of the Internal Revenue Service audit for the 2008 tax year, resolution of a federal tax and interest overpayment related to the 2006 tax year and an agreed-upon refund for the double taxation of the Corporation's wholly-owned Canadian subsidiary for the 2001 and 2002 tax years.

The change in the year-to-date consolidated overall estimated effective income tax rate during the third quarter of 2010, when compared with the year-to-date consolidated overall estimated effective tax rate as of June 30, 2010, increased consolidated net earnings for the nine months ended September 30, 2010 by $5,724,000, or $0.13 per diluted share. The overall estimated effective income tax rate for the nine months ended September 30, 2010 included the effective settlement of issues related to the 2004 and 2005 tax years, the effective settlement of the Internal Revenue Service audit for the 2007 tax year, the expiration of the statute of limitations for federal examination of the 2006 tax year, the provision of a valuation allowance for unused tax credits, and the true-up of the 2009 provision estimates to actual taxes paid as a result of filing the related tax returns during the period.

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Business Combinations And Discontinued Operations (Components Of Discontinued Operations) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Business Combinations And Discontinued Operations
Net sales	$ 27	$ 44	$ 94	$ 102
Pretax gain (loss) on operations	385	(15)	312	147
Income tax expense (benefit)	138	(37)	121	12
Net earnings	$ 247	$ 22	$ 191	$ 135

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Long-Term Debt

9 Months Ended

Sep. 30, 2011

Long-Term Debt

Long-Term Debt

5. Long-Term Debt

	September 30,           2011		December 31,           2010		September 30,           2010
	(Dollars in Thousands)
6.6% Senior Notes, due 2018	$	298,428	$	298,288	$	298,242
7% Debentures, due 2025		124,411		124,393		124,388
6.25% Senior Notes, due 2037		247,906		247,882		247,874
6.875% Notes, due 2011		—		242,129		242,118
Term Loan Facility, due 2015, interest rate of 1.99% at September 30, 2011		250,000		—		—
Term Loan, due 2012, interest rate of 3.29% at December 31, 2010		—		111,750		111,750
Revolving Facility, interest rate of 1.61% at September 30, 2011		20,000		—		—
AR Credit Facility, interest rate of 1.60% at September 30, 2011		100,000		—		—
Other notes		4,740		6,317		6,757
Total debt		1,045,485		1,030,759		1,031,129
Less current maturities		(7,150)		(248,714)		(245,423)
Long-term debt	$	1,038,335	$	782,045	$	785,706

On March 31, 2011, the Corporation entered into a Credit Agreement with JPMorgan Chase Bank, N.A., as Administrative Agent, Wells Fargo Bank, N.A., Branch Banking and Trust Company, SunTrust Bank, and Bank of America, N.A., as Co-Syndication Agents, and the lenders party thereto (the "Credit Agreement"), which provides for a $250,000,000 senior unsecured term loan (the "Term Loan Facility") and a $350,000,000 four-year senior unsecured revolving facility (the "Revolving Facility", and together with the Term Loan Facility, the "Senior Unsecured Credit Facilities"). The Senior Unsecured Credit Facilities are syndicated with the following banks:

Lender	Revolving Facility       Commitment		Term Loan Facility       Commitment
	(Dollars in Thousands)
JPMorgan Chase Bank, N.A.	$	46,667	$	33,333
Wells Fargo Bank, N.A.		46,667		33,333
SunTrust Bank		46,667		33,333
Branch Banking and Trust Company		46,667		33,333
Bank of America, N.A.		46,667		33,333
Citibank, N.A.		29,167		20,833
Deutsche Bank AG New York Branch		29,167		20,833
The Northern Trust Company		29,167		20,833
Comerica Bank		14,582		10,418
Regions Bank		14,582		10,418
Total	$	350,000	$	250,000

Borrowings under the Senior Unsecured Credit Facilities bear interest, at the Corporation's option, at rates based upon LIBOR or a base rate, plus, for each rate, a margin determined in accordance with a ratings-based pricing grid. The base rate is defined as the highest of (i) JPMorgan Chase Bank N.A.'s prime lending rate, (ii) the Federal Funds rate plus 0.5% and (iii) one-month LIBOR plus 1%.

The Revolving Facility expires on March 31, 2015, with any outstanding principal amounts, together with interest accrued thereon, due in full on that date.

On March 31, 2011, the Corporation borrowed $250,000,000 under the Term Loan Facility, a portion of which was used to prepay the $111,750,000 Term Loan due 2012. The Corporation is required to make annual principal payments of $5,000,000, with the remaining outstanding principal, together with interest accrued thereon, due in full on March 31, 2015.

On March 31, 2011, the Corporation entered into the Second Amendment to Account Purchase Agreement with Wells Fargo Bank, N.A., which amended its $100,000,000 secured accounts receivable credit facility (the "AR Credit Facility"). As amended, purchases and settlements will be made monthly. Additionally, as amended, borrowings under the AR Credit Facility bear interest at a rate equal to the one-month LIBOR plus 1.35%. Borrowings under the AR Credit Facility are limited based on the balance of the Corporation's accounts receivable and mature on April 20, 2012.

On April 1, 2011, the Corporation borrowed $100,000,000 under the AR Credit Facility, which in addition to proceeds from the Term Loan Facility, was used to repay $242,140,000 of 6.875% Notes that matured on that date. At September 30, 2011, outstanding borrowings of $100,000,000 were classified as long-term on the consolidated balance sheet as the Corporation has the ability and intent to refinance its AR Credit Facility with borrowings that mature in more than twelve months.

The Credit Agreement and the AR Credit Facility, as amended, require the Corporation's ratio of consolidated debt to consolidated earnings before interest, taxes, depreciation, depletion and amortization (EBITDA), as defined, for the trailing twelve month period (the "Ratio") to not exceed 3.5x as of the end of any fiscal quarter, provided that the Corporation may exclude from the Ratio debt incurred in connection with certain acquisitions for a period of 180 days so long as the Corporation maintains specified ratings on its long-term unsecured debt and the Ratio calculated without such exclusion does not exceed 3.75x. Additionally, if no amounts are outstanding under both the Revolving Facility and the AR Credit Facility, consolidated debt, including debt guaranteed by the Corporation, may be reduced by the Corporation's unrestricted cash and cash equivalents in excess of $50,000,000, such reduction not to exceed $200,000,000, for purposes of the covenant calculation.

Accumulated other comprehensive loss includes the unamortized value of terminated forward starting interest rate swap agreements. For the three and nine months ended September 30, 2011, the Corporation recognized $242,000 and $715,000, respectively, as additional interest expense. For the three and nine months ended September 30, 2010, the Corporation recognized $226,000 and $667,000, respectively, as additional interest expense. The ongoing amortization of the terminated value of the forward starting interest rate swap agreements will increase annual interest expense by approximately $1,000,000 until the maturity of the 6.6% Senior Notes in 2018.

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Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash Flows from Operating Activities:
Consolidated net earnings	$ 68,490,000	$ 83,455,000
Adjustments to reconcile consolidated net earnings to net cash provided by operating activities:
Depreciation, depletion and amortization	129,673,000	135,946,000
Stock-based compensation expense	9,317,000	11,684,000
Gains on divestitures and sales of assets	(3,890,000)	(4,293,000)
Deferred income taxes	6,358,000	17,131,000
Excess tax benefits from stock-based compensation transactions		(1,643,000)
Other items, net	1,370,000	704,000
Changes in operating assets and liabilities, net of effects of acquisitions and divestitures:
Accounts receivable, net	(77,971,000)	(86,798,000)
Inventories, net	(4,431,000)	8,888,000
Accounts payable	25,975,000	24,898,000
Other assets and liabilities, net	24,979,000	12,639,000
Net Cash Provided by Operating Activities	179,870,000	202,611,000
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(93,518,000)	(110,024,000)
Acquisitions, net	(49,930,000)	(28,107,000)
Proceeds from divestitures and sales of assets	6,178,000	4,524,000
Railcar construction advances		(8,997,000)
Repayments of railcar construction advances		8,997,000
Net Cash Used for Investing Activities	(137,270,000)	(133,607,000)
Cash Flows from Financing Activities:
Borrowings of long-term debt	460,000,000	150,000,000
Repayments of long-term debt	(445,471,000)	(369,229,000)
Debt issuance costs	(3,328,000)	(80,000)
Change in bank overdraft	(2,123,000)	(1,737,000)
Payments on capital lease obligations		(308,000)
Dividends paid	(55,232,000)	(55,157,000)
Distributions to owners of noncontrolling interests	(1,000,000)
Purchase of remaining interest in existing limited liability company	(10,394,000)
Issuances of common stock	1,465,000	2,772,000
Excess tax benefits from stock-based compensation transactions		1,643,000
Net Cash Used for Financing Activities	(56,083,000)	(272,096,000)
Net Decrease in Cash and Cash Equivalents	(13,483,000)	(203,092,000)
Cash and Cash Equivalents, beginning of period	70,323,000	263,591,000
Cash and Cash Equivalents, end of period	56,840,000	60,499,000
Noncash Investing and Financing Activities:
Issuance of notes payable for acquisition of land		450,000
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	36,649,000	36,073,000
Cash (refunds) payments for income taxes	$ (7,831,000)	$ 3,732,000

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Significant Accounting Policies

9 Months Ended

Sep. 30, 2011

Significant Accounting Policies

Significant Accounting Policies

1. Significant Accounting Policies

Basis of Presentation

The accompanying unaudited consolidated financial statements of Martin Marietta Materials, Inc. (the "Corporation") have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and to Article 10 of Regulation S-X. The Corporation has continued to follow the accounting policies set forth in the audited consolidated financial statements and related notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011. In the opinion of management, the interim financial information provided herein reflects all adjustments, consisting of normal recurring accruals, necessary for a fair presentation of the results of operations, financial position and cash flows for the interim periods. The results of operations for the quarter and nine months ended September 30, 2011 are not indicative of the results expected for other interim periods or the full year. The balance sheet at December 31, 2010 has been derived from the audited financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2010.

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings attributable to Martin Marietta Materials, Inc., reduced by dividends and undistributed earnings attributable to the Corporation's unvested restricted stock awards and incentive stock awards. The denominator for basic earnings per common share is the weighted-average number of common shares outstanding during the period. Diluted earnings per common share are computed assuming that the weighted-average number of common shares is increased by the conversion, using the treasury stock method, of awards to be issued to employees and nonemployee members of the Corporation's Board of Directors under certain stock-based compensation arrangements if the conversion is dilutive. The diluted per-share computations reflect a change in the number of common shares outstanding (the denominator) to include the number of additional shares that would have been outstanding if the potentially dilutive common shares had been issued.

The following table reconciles the numerator and denominator for basic and diluted earnings per common share:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	48,909	$	51,968	$	67,350	$	82,074
Less: Distributed and undistributed earnings attributable to unvested awards		378		529		557		865
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		48,531		51,439		66,793		81,209
Basic and diluted net earnings available to common shareholders from discontinued operations		247		22		191		135
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	48,778	$	51,461	$	66,984	$	81,344
Basic weighted-average common shares outstanding		45,690		45,526		45,634		45,463
Effect of dilutive employee and director awards		109		152		149		176
Diluted weighted-average common shares outstanding		45,799		45,678		45,783		45,639

Comprehensive Earnings/Loss

Consolidated comprehensive earnings/loss for the Corporation consists of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense. Consolidated comprehensive earnings for the three and nine months ended September 30, 2011 was $50,091,000 and $72,592,000, respectively. Consolidated comprehensive earnings for the three and nine months ended September 30, 2010 was $55,495,000 and $91,293,000, respectively.

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Income Taxes (Estimated Effective Income Tax Rate) (Details)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Income Taxes
Continuing operations	22.70%	24.20%
Discontinued operations	38.80%	8.20%
Consolidated overall	22.80%	24.20%

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Business Combinations And Discontinued Operations (Narrative) (Details) (USD $)	1 Months Ended	9 Months Ended
	May 31, 2011	Sep. 30, 2011 T
Business Combinations And Discontinued Operations
Noncontrolling interest, ownership percentage by noncontrolling owners	1.00%
Purchase of remaining interest in existing limited liability company	$ 10,394,000	$ 10,394,000
Elimination of noncontrolling interest	3,439,000	(7,176,000)
Additional paid-in capital	3,737,000
Deferred tax asset	$ 3,218,000
Tons of limestone reserves acquired with acquisition		200,000,000

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Business Combinations And Discontinued Operations

9 Months Ended

Sep. 30, 2011

Business Combinations And Discontinued Operations

Business Combinations and Discontinued Operations

2. Business Combinations and Discontinued Operations

Business Combinations

In May 2011, the Corporation purchased the remaining 1% interest in an existing limited liability company for $10,394,000. The purchase of the remaining interest represents an equity transaction. Accordingly, the assets and liabilities related to the noncontrolling interest continued to be valued at their basis at the transaction date; the noncontrolling interest of $3,439,000 was eliminated; additional paid-in capital was reduced by $3,737,000 for the excess of the cash paid, including transaction costs, over the noncontrolling interest at the acquisition date; and a deferred tax asset of $3,218,000 was recorded. The purchase price and the payment of transaction costs have been classified as a financing activity in the Corporation's consolidated statement of cash flows for the nine months ended September 30, 2011.

In June 2011, the Corporation acquired the construction assets of six aggregates quarries, two ready mixed concrete plants and an asphalt plant, all of which are located in western San Antonio, Texas. The operating results of the acquired locations are reported through the Corporation's West Group in the financial statements starting from the date of acquisition. This transaction provides over 200 million tons of high-quality limestone reserves and complements the Corporation's existing integrated presence in this high-growth market.

On October 12, 2011, the Corporation announced that it signed a definitive agreement with Lafarge North America Inc. ("Lafarge") for the exchange of certain assets. Under the terms of the agreement, the Corporation will receive aggregates quarry sites, ready mixed concrete and asphalt plants, and a road paving business in the metropolitan Denver, Colorado, region. In exchange, Lafarge will receive properties consisting of quarries, an asphalt plant and distribution yards operated by the Corporation along the Mississippi River and a cash payment. The transaction is anticipated to close within 60 days, subject to regulatory approval.

Divestitures and Permanent Closures

Operations that are disposed of or permanently shut down represent discontinued operations, and, therefore, the results of their operations through the dates of disposal and any gain or loss on disposals are included in discontinued operations in the consolidated statements of earnings. All discontinued operations relate to the Aggregates business.

Discontinued operations included the following net sales, pretax gain or loss on operations, income tax benefit or expense and overall net earnings:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Net sales	$	27	$	44	$	94	$	102
Pretax gain (loss) on operations	$	385	$	(15)	$	312	$	147
Income tax expense (benefit)		138		(37)		121		12
Net earnings	$	247	$	22	$	191	$	135

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Commitments And Contingencies (Details) (USD $)	0 Months Ended	1 Months Ended	9 Months Ended
	Apr. 08, 2011	Jul. 31, 2010	Sep. 30, 2011	Sep. 30, 2010	Jul. 31, 2011	Jul. 20, 2011
Commitments And Contingencies
Settled to legal proceedings				$ 7,000,000
Increase in net earnings				2,751,000
Increase in earnings per diluted share				$ 0.06
Payment obligation of affiliate		12,400,000
Guarantee of affiliate's obligations	6,200,000					24,000,000
Term of equipment leasing agreements (in years)	5
Prior guarantee obligations maximum exposure					$ 20,000,000
Line of credit maturity period			July 2013

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Business Segments (Tables)

9 Months Ended

Sep. 30, 2011

Business Segments

Financial Data For Continuing Operations For The Corporation's Reportable Business Segments

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Total revenues:
Mideast Group	$	144,990	$	144,691	$	370,793	$	375,729
Southeast Group		103,832		115,713		287,340		313,251
West Group		230,733		202,895		563,092		521,330
Total Aggregates Business		479,555		463,299		1,221,225		1,210,310
Specialty Products		55,201		46,102		162,990		144,664
Total	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Net sales:
Mideast Group	$	131,579	$	133,607	$	341,308	$	348,524
Southeast Group		84,475		91,216		232,469		251,440
West Group		197,589		176,623		474,070		450,212
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Earnings (Loss) from operations:
Mideast Group	$	32,740	$	38,755	$	66,332	$	80,338
Southeast Group		(3,061)		1,414		(20,121)		(144)
West Group		39,659		33,942		53,759		54,654
Total Aggregates Business		69,338		74,111		99,970		134,848
Specialty Products		15,573		12,043		49,984		40,067
Corporate		(5,912)		(2,300)		(14,071)		(13,251)
Total	$	78,999	$	83,854	$	135,883	$	161,664

Net Sales By Product Line

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Aggregates	$	379,325	$	376,554	$	963,991	$	986,038
Asphalt		13,095		9,833		38,062		29,014
Ready Mixed Concrete		9,750		7,056		22,691		19,558
Road Paving		10,017		6,575		19,425		12,602
Other		1,456		1,428		3,678		2,964
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Magnesia-Based Chemicals		36,064		29,290		105,369		89,287
Dolomitic Lime		13,861		12,457		42,743		41,386
Other		417		516		972		1,205
Total Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054

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Inventories, Net (Components Of Inventories) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Inventories, Net
Finished products	$ 362,924	$ 358,138	$ 350,842
Products in process and raw materials	9,483	13,842	14,310
Supplies and expendable parts	53,624	46,958	46,566
Inventories, Gross	426,031	418,938	411,718
Less allowances	(88,301)	(87,044)	(87,898)
Total	$ 337,730	$ 331,894	$ 323,820

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Pension And Postretirement Benefits (Estimated Components Of The Recorded Net Periodic Benefit Cost For Pension And Postretirement Benefits) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Pension [Member]
Service cost	$ 2,815	$ 2,761	$ 8,446	$ 8,282
Interest cost	5,808	5,753	17,425	17,259
Expected return on assets	(6,121)	(5,255)	(18,364)	(15,766)
Prior service cost (credit)	133	146	400	437
Actuarial loss (gain)	1,581	2,554	4,743	7,661
Settlement charge (adjustment)	332	923	346	1,006
Total net periodic benefit cost	4,548	6,882	12,996	18,879
Postretirement Benefits [Member]
Service cost	88	137	263	411
Interest cost	556	688	1,669	2,063
Expected return on assets
Prior service cost (credit)	(435)	(372)	(1,306)	(1,117)
Actuarial loss (gain)	(21)		(64)
Settlement charge (adjustment)
Total net periodic benefit cost	$ 188	$ 453	$ 562	$ 1,357

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Significant Accounting Policies (Basic And Diluted Earnings Per Common Share) (Details) (USD $) Share data in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Significant Accounting Policies
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$ 48,909,000	$ 51,968,000	$ 67,350,000	$ 82,074,000
Less: Distributed and undistributed earnings attributable to unvested awards	378,000	529,000	557,000	865,000
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.	48,531,000	51,439,000	66,793,000	81,209,000
Basic and diluted net earnings available to common shareholders from discontinued operations	247,000	22,000	191,000	135,000
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	48,778,000	51,461,000	66,984,000	81,344,000
Basic weighted-average common shares outstanding	45,690	45,526	45,634	45,463
Effect of dilutive employee and director awards	109	152	149	176
Diluted weighted-average common shares outstanding	45,799	45,678	45,783	45,639
Consolidated comprehensive earnings	$ 50,091,000	$ 55,495,000	$ 72,592,000	$ 91,293,000

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Business Segments

9 Months Ended

Sep. 30, 2011

Business Segments

Business Segments

10. Business Segments

The Corporation conducts its aggregates operations through three reportable business segments: Mideast Group, Southeast Group and West Group. The Corporation also has a Specialty Products segment that includes magnesia-based chemicals products and dolomitic lime. These segments are consistent with the Corporation's current management reporting structure.

The following tables display selected financial data for continuing operations for the Corporation's reportable business segments. Corporate loss from operations primarily includes depreciation on capitalized interest, expenses for corporate administrative functions, unallocated corporate expenses and other nonrecurring and/or non-operational adjustments.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Total revenues:
Mideast Group	$	144,990	$	144,691	$	370,793	$	375,729
Southeast Group		103,832		115,713		287,340		313,251
West Group		230,733		202,895		563,092		521,330
Total Aggregates Business		479,555		463,299		1,221,225		1,210,310
Specialty Products		55,201		46,102		162,990		144,664
Total	$	534,756	$	509,401	$	1,384,215	$	1,354,974
Net sales:
Mideast Group	$	131,579	$	133,607	$	341,308	$	348,524
Southeast Group		84,475		91,216		232,469		251,440
West Group		197,589		176,623		474,070		450,212
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054
Earnings (Loss) from operations:
Mideast Group	$	32,740	$	38,755	$	66,332	$	80,338
Southeast Group		(3,061)		1,414		(20,121)		(144)
West Group		39,659		33,942		53,759		54,654
Total Aggregates Business		69,338		74,111		99,970		134,848
Specialty Products		15,573		12,043		49,984		40,067
Corporate		(5,912)		(2,300)		(14,071)		(13,251)
Total	$	78,999	$	83,854	$	135,883	$	161,664

The asphalt, ready mixed concrete, road paving and other product lines are considered internal customers of the core aggregates business. Product lines for the Specialty Products segment consist of magnesia-based chemicals, dolomitic lime and other. Net sales by product line are as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Aggregates	$	379,325	$	376,554	$	963,991	$	986,038
Asphalt		13,095		9,833		38,062		29,014
Ready Mixed Concrete		9,750		7,056		22,691		19,558
Road Paving		10,017		6,575		19,425		12,602
Other		1,456		1,428		3,678		2,964
Total Aggregates Business		413,643		401,446		1,047,847		1,050,176
Magnesia-Based Chemicals		36,064		29,290		105,369		89,287
Dolomitic Lime		13,861		12,457		42,743		41,386
Other		417		516		972		1,205
Total Specialty Products		50,342		42,263		149,084		131,878
Total	$	463,985	$	443,709	$	1,196,931	$	1,182,054

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Inventories, Net

9 Months Ended

Sep. 30, 2011

Inventories, Net

Inventories, Net

3. Inventories, Net

	September 30, 2011		December 31, 2010		September 30, 2010
	(Dollars in Thousands)
Finished products	$	362,924	$	358,138	$	350,842
Products in process and raw materials		9,483		13,842		14,310
Supplies and expendable parts		53,624		46,958		46,566
		426,031		418,938		411,718
Less allowances		(88,301)		(87,044)		(87,898)
Total	$	337,730	$	331,894	$	323,820

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Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2011

Significant Accounting Policies

Basic And Diluted Earnings Per Common Share

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(In Thousands)
Net earnings from continuing operations attributable to Martin Marietta Materials, Inc.	$	48,909	$	51,968	$	67,350	$	82,074
Less: Distributed and undistributed earnings attributable to unvested awards		378		529		557		865
Basic and diluted net earnings available to common shareholders from continuing operations attributable to Martin Marietta Materials, Inc.		48,531		51,439		66,793		81,209
Basic and diluted net earnings available to common shareholders from discontinued operations		247		22		191		135
Basic and diluted net earnings available to common shareholders attributable to Martin Marietta Materials, Inc.	$	48,778	$	51,461	$	66,984	$	81,344
Basic weighted-average common shares outstanding		45,690		45,526		45,634		45,463
Effect of dilutive employee and director awards		109		152		149		176
Diluted weighted-average common shares outstanding		45,799		45,678		45,783		45,639

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Income Taxes (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Income Taxes
Increase in consolidated net earnings	$ 3,636,000	$ 5,724,000
Increase in per diluted share	$ 0.08	$ 0.13

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Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2011

Supplemental Cash Flow Information

Components Of Change In Other Assets And Liabilities, Net

	Nine Months Ended September 30,
	2011		2010
	(Dollars in Thousands)
Other current and noncurrent assets	$	2,325	$	3,108
Accrued salaries, benefits and payroll taxes		(2,324)		(2,237	)
Accrued insurance and other taxes		8,366		8,134
Accrued income taxes		22,208		11,177
Accrued pension, postretirement and postemployment benefits		(16,046)		(10,849	)
Other current and noncurrent liabilities		10,450		3,306
	$	24,979	$	12,639

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Consolidated Statements Of Earnings (Parenthetical) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements Of Earnings
Gain on discontinued operations, related tax expense (benefit)	$ 138	$ (37)	$ 121	$ 12

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Business Combinations And Discontinued Operations (Tables)

9 Months Ended

Sep. 30, 2011

Business Combinations And Discontinued Operations

Components Of Discontinued Operations

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
	(Dollars in Thousands)
Net sales	$	27	$	44	$	94	$	102
Pretax gain (loss) on operations	$	385	$	(15)	$	312	$	147
Income tax expense (benefit)		138		(37)		121		12
Net earnings	$	247	$	22	$	191	$	135

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Business Segments (Net Sales By Product Line) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net Sales	$ 463,985	$ 443,709	$ 1,196,931	$ 1,182,054
Aggregates [Member]
Net Sales	379,325	376,554	963,991	986,038
Asphalt [Member]
Net Sales	13,095	9,833	38,062	29,014
Ready Mixed Concrete [Member]
Net Sales	9,750	7,056	22,691	19,558
Road Paving [Member]
Net Sales	10,017	6,575	19,425	12,602
Other Product Line [Member]
Net Sales	1,456	1,428	3,678	2,964
Total Aggregates Business [Member]
Net Sales	413,643	401,446	1,047,847	1,050,176
Magnesia-Based Chemicals [Member]
Net Sales	36,064	29,290	105,369	89,287
Dolomitic Lime [Member]
Net Sales	13,861	12,457	42,743	41,386
Others [Member]
Net Sales	417	516	972	1,205
Specialty Products [Member]
Net Sales	$ 50,342	$ 42,263	$ 149,084	$ 131,878

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Goodwill And Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill And Intangible Assets

Changes In Goodwill

	Nine Months Ended September 30, 2011
	Mideast Group		Southeast Group		West Group		Total
Balance at beginning of period	$	122,052	$	105,870	$	398,605	$	626,527
Acquisitions		—		—		12,512		12,512
Balance at end of period	$	122,052	$	105,870	$	411,117	$	639,039

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Consolidated Statement Of Total Equity (USD $) Share data in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total Shareholders' Equity [Member]	Noncontrolling Interests [Member]	Total
Beginning Balance at Dec. 31, 2010	$ 455,000	$ 396,485,000	$ (53,660,000)	$ 1,082,160,000	$ 1,425,440,000	$ 42,819,000	$ 1,468,259,000
Beginning Balance, Shares at Dec. 31, 2010	45,579
Consolidated net earnings				67,541,000	67,541,000	949,000	68,490,000
Adjustment for funded status of pension and postretirement benefit plans, net of tax of $6,663			4,130,000		4,130,000	2,000	4,132,000
Foreign currency translation loss			(462,000)		(462,000)		(462,000)
Amortization of terminated value of forward starting interest rate swap agreements into interest expense, net of tax of $283			432,000		432,000		432,000
Consolidated comprehensive earnings					71,641,000	951,000	72,592,000
Dividends declared				(55,232,000)	(55,232,000)		(55,232,000)
Issuances of common stock for stock award plans	1,000	(1,210,000)			(1,209,000)		(1,209,000)
Issuances of common stock for stock award plans, shares	118
Stock-based compensation expense		9,317,000			9,317,000		9,317,000
Distributions to owners of noncontrolling interests						(1,000,000)	(1,000,000)
Purchase of remaining interest in existing limited liability company		(3,737,000)			(3,737,000)	(3,439,000)	(7,176,000)
Ending Balance at Sep. 30, 2011	$ 456,000	$ 400,855,000	$ (49,560,000)	$ 1,094,469,000	$ 1,446,220,000	$ 39,331,000	$ 1,485,551,000
Ending Balance, Shares at Sep. 30, 2011	45,697

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Pension And Postretirement Benefits

9 Months Ended

Sep. 30, 2011

Pension And Postretirement Benefits

Pension And Postretirement Benefits

8. Pension and Postretirement Benefits

The following presents the estimated components of the recorded net periodic benefit cost for pension and postretirement benefits (dollars in thousands):

		$12,9961		$12,9961		$12,9961		$12,9961
	Three Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	2,815	$	2,761	$	88	$	137
Interest cost		5,808		5,753		556		688
Expected return on assets		(6,121)		(5,255)		—		—
Amortization of:
Prior service cost (credit)		133		146		(435)		(372)
Actuarial loss (gain)		1,581		2,554		(21)		—
Settlement charge		332		923		—		—
Total net periodic benefit cost	$	4,548	$	6,882	$	188	$	453

	Nine Months Ended September 30,
	Pension				Postretirement Benefits
	2011		2010		2011		2010
Service cost	$	8,446	$	8,282	$	263	$	411
Interest cost		17,425		17,259		1,669		2,063
Expected return on assets		(18,364)		(15,766)		—		—
Amortization of:
Prior service cost (credit)		400		437		(1,306)		(1,117)
Actuarial loss (gain)		4,743		7,661		(64)		—
Settlement charge		346		1,006		—		—
Total net periodic benefit cost	$	12,996	$	18,879	$	562	$	1,357

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Goodwill And Intangible Assets (Changes In Goodwill) (Details) (USD $) In Thousands	9 Months Ended						9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Mideast Group [Member]	Dec. 31, 2010 Mideast Group [Member]	Sep. 30, 2011 Southeast Group [Member]	Dec. 31, 2010 Southeast Group [Member]	Sep. 30, 2011 West Group [Member]
Goodwill, Beginning Balance	$ 626,527	$ 624,224	$ 122,052	$ 122,052	$ 105,870	$ 105,870	$ 398,605
Acquisitions	12,512						12,512
Balance at end of period	$ 639,039	$ 624,224	$ 122,052	$ 122,052	$ 105,870	$ 105,870	$ 411,117

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Significant Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2011

Significant Accounting Policies

Basis Of Presentation

Basis of Presentation

The accompanying unaudited consolidated financial statements of Martin Marietta Materials, Inc. (the "Corporation") have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to the Quarterly Report on Form 10-Q and to Article 10 of Regulation S-X. The Corporation has continued to follow the accounting policies set forth in the audited consolidated financial statements and related notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2010, filed with the Securities and Exchange Commission on February 25, 2011. In the opinion of management, the interim financial information provided herein reflects all adjustments, consisting of normal recurring accruals, necessary for a fair presentation of the results of operations, financial position and cash flows for the interim periods. The results of operations for the quarter and nine months ended September 30, 2011 are not indicative of the results expected for other interim periods or the full year. The balance sheet at December 31, 2010 has been derived from the audited financial statements at that date but does not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Corporation's Annual Report on Form 10-K for the year ended December 31, 2010.

Earnings Per Common Share

Earnings per Common Share

The numerator for basic and diluted earnings per common share is net earnings attributable to Martin Marietta Materials, Inc., reduced by dividends and undistributed earnings attributable to the Corporation's unvested restricted stock awards and incentive stock awards. The denominator for basic earnings per common share is the weighted-average number of common shares outstanding during the period. Diluted earnings per common share are computed assuming that the weighted-average number of common shares is increased by the conversion, using the treasury stock method, of awards to be issued to employees and nonemployee members of the Corporation's Board of Directors under certain stock-based compensation arrangements if the conversion is dilutive. The diluted per-share computations reflect a change in the number of common shares outstanding (the denominator) to include the number of additional shares that would have been outstanding if the potentially dilutive common shares had been issued.

Comprehensive Earnings/Loss

Comprehensive Earnings/Loss

Consolidated comprehensive earnings/loss for the Corporation consists of consolidated net earnings or loss; adjustments for the funded status of pension and postretirement benefit plans; foreign currency translation adjustments; and the amortization of the value of terminated forward starting interest rate swap agreements into interest expense. Consolidated comprehensive earnings for the three and nine months ended September 30, 2011 was $50,091,000 and $72,592,000, respectively. Consolidated comprehensive earnings for the three and nine months ended September 30, 2010 was $55,495,000 and $91,293,000, respectively.

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Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010
Current Assets:
Cash and cash equivalents	$ 56,840	$ 70,323	$ 60,499
Accounts receivable, net	259,773	183,361	249,613
Inventories, net	337,730	331,894	323,820
Current deferred income tax benefits	92,959	83,380	71,593
Other current assets	20,114	27,253	26,591
Total Current Assets	767,416	696,211	732,116
Property, plant and equipment	3,662,446	3,568,275	3,541,058
Allowances for depreciation, depletion and amortization	(1,975,805)	(1,880,445)	(1,847,852)
Net property, plant and equipment	1,686,641	1,687,830	1,693,206
Goodwill	639,039	626,527	624,224
Other intangibles, net	18,211	17,548	17,563
Other noncurrent assets	47,251	46,627	48,674
Total Assets	3,158,558	3,074,743	3,115,783
Current Liabilities:
Bank overdraft		2,123
Accounts payable	86,322	60,333	76,993
Accrued salaries, benefits and payroll taxes	16,867	17,506	14,403
Pension and postretirement benefits	4,420	6,034	16,894
Accrued insurance and other taxes	31,902	23,535	32,409
Income taxes	16,256	174
Current maturities of long-term debt and short-term facilities	7,150	248,714	245,423
Accrued interest	18,709	12,045	27,231
Other current liabilities	16,120	15,029	13,482
Total Current Liabilities	197,746	385,493	426,835
Long-term debt	1,038,335	782,045	785,706
Pension, postretirement and postemployment benefits	102,787	127,671	144,574
Noncurrent deferred income taxes	249,572	228,698	216,844
Other noncurrent liabilities	84,567	82,577	84,596
Total Liabilities	1,673,007	1,606,484	1,658,555
Equity:
Common stock, par value $0.01 per share	456	455	454
Preferred stock, par value $0.01 per share
Additional paid-in capital	400,855	396,485	395,853
Accumulated other comprehensive loss	(49,560)	(53,660)	(67,249)
Retained earnings	1,094,469	1,082,160	1,085,750
Total Shareholders' Equity	1,446,220	1,425,440	1,414,808
Noncontrolling interests	39,331	42,819	42,420
Total Equity	1,485,551	1,468,259	1,457,228
Total Liabilities and Equity	$ 3,158,558	$ 3,074,743	$ 3,115,783

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Long-Term Debt (Long-Term Debt) (Details) (USD $)	1 Months Ended	9 Months Ended				9 Months Ended			9 Months Ended			9 Months Ended			9 Months Ended				9 Months Ended
	Mar. 31, 2011	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2010	Sep. 30, 2011 AR Credit Facility [Member]	Sep. 30, 2011 6.6% Senior Notes, Due 2018 [Member]	Dec. 31, 2010 6.6% Senior Notes, Due 2018 [Member]	Sep. 30, 2010 6.6% Senior Notes, Due 2018 [Member]	Sep. 30, 2011 7% Debentures, Due 2025 [Member]	Dec. 31, 2010 7% Debentures, Due 2025 [Member]	Sep. 30, 2010 7% Debentures, Due 2025 [Member]	Sep. 30, 2011 6.25% Senior Notes, Due 2037 [Member]	Dec. 31, 2010 6.25% Senior Notes, Due 2037 [Member]	Sep. 30, 2010 6.25% Senior Notes, Due 2037 [Member]	Sep. 30, 2011 6.875% Notes, Due 2011 [Member]	Apr. 30, 2011 6.875% Notes, Due 2011 [Member]	Dec. 31, 2010 6.875% Notes, Due 2011 [Member]	Sep. 30, 2010 6.875% Notes, Due 2011 [Member]	Sep. 30, 2011 Term Loan Facility, Due 2015, Interest Rate Of 1.99% At September 30, 2011 [Member]	Sep. 30, 2011 Term Loan, Due 2012, Interest Rate Of 3.29% At December 31, 2010 [Member]	Dec. 31, 2010 Term Loan, Due 2012, Interest Rate Of 3.29% At December 31, 2010 [Member]	Sep. 30, 2010 Term Loan, Due 2012, Interest Rate Of 3.29% At December 31, 2010 [Member]	Sep. 30, 2011 Revolving Facility, Interest Rate Of 1.61% At September 30, 2011 [Member]	Sep. 30, 2011 AR Credit Facility, Interest Rate Of 1.60% At September 30, 2011 [Member]	Sep. 30, 2011 Other Notes [Member]	Dec. 31, 2010 Other Notes [Member]	Sep. 30, 2010 Other Notes [Member]
Total debt		$ 1,045,485,000	$ 1,030,759,000	$ 1,031,129,000		$ 298,428,000	$ 298,288,000	$ 298,242,000	$ 124,411,000	$ 124,393,000	$ 124,388,000	$ 247,906,000	$ 247,882,000	$ 247,874,000			$ 242,129,000	$ 242,118,000	$ 250,000,000		$ 111,750,000	$ 111,750,000
Credit Facility					100,000,000																		20,000,000	100,000,000
Other notes																									4,740,000	6,317,000	6,757,000
Less current maturities		(7,150,000)	(248,714,000)	(245,423,000)
Long-term debt		$ 1,038,335,000	$ 782,045,000	$ 785,706,000
Interest rate on notes						6.60%			7.00%			6.25%			6.875%	6.875%
Interest rate on term loan																			1.99%	3.29%
Maturity date	March 31, 2015	April 20, 2012				2018			2025			2037			2011				2015	2012
Credit Facility interest rate																							1.61%	1.60%

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Supplemental Cash Flow Information (Components Of Change In Other Assets And Liabilities, Net) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Supplemental Cash Flow Information
Other current and noncurrent assets	$ 2,325	$ 3,108
Accrued salaries, benefits and payroll taxes	(2,324)	(2,237)
Accrued insurance and other taxes	8,366	8,134
Accrued income taxes	22,208	11,177
Accrued pension, postretirement and postemployment benefits	(16,046)	(10,849)
Other current and noncurrent liabilities	10,450	3,306
Other assets and liabilities, net	$ 24,979	$ 12,639

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Long-Term Debt (Senior Unsecured Credit Facilities) (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011
Revolving Facility Commitment	$ 350,000
Term Loan Facility Commitment	250,000
JPMorgan Chase Bank [Member]
Revolving Facility Commitment	46,667
Term Loan Facility Commitment	33,333
Wells Fargo Bank [Member]
Revolving Facility Commitment	46,667
Term Loan Facility Commitment	33,333
SunTrust Bank [Member]
Revolving Facility Commitment	46,667
Term Loan Facility Commitment	33,333
Branch Banking And Trust Company [Member]
Revolving Facility Commitment	46,667
Term Loan Facility Commitment	33,333
Bank Of America [Member]
Revolving Facility Commitment	46,667
Term Loan Facility Commitment	33,333
Citibank [Member]
Revolving Facility Commitment	29,167
Term Loan Facility Commitment	20,833
Deutsche Bank AG New York Branch [Member]
Revolving Facility Commitment	29,167
Term Loan Facility Commitment	20,833
The Northern Trust Company [Member]
Revolving Facility Commitment	29,167
Term Loan Facility Commitment	20,833
Comerica Bank [Member]
Revolving Facility Commitment	14,582
Term Loan Facility Commitment	10,418
Regions Bank [Member]
Revolving Facility Commitment	14,582
Term Loan Facility Commitment	$ 10,418