Definitive Prospectus

The selling shareholders are selling 7,268,351 common shares. The underwriters have an option to purchase a maximum of 1,090,253 additional common shares from the selling shareholders to cover over-allotments. We will not receive any of the proceeds from the sale of common shares by the selling shareholders.

Our common shares are listed on the New York Stock Exchange and on the Toronto Stock Exchange under the symbol “NOA.” On July 31, 2007, the last reported sale price of our common shares on the New York Stock Exchange was US$17.24 per share and on the Toronto Stock Exchange was C$18.35 per share.

Investing in our common shares involves risks. See “ Risk Factors” beginning on page 14.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Index to Financial Statements

You should rely only on the information contained or incorporated by reference in this prospectus or to which we have referred you. We have not and the underwriters have not authorized anyone to provide you with information that is different. If anyone provides you with different or inconsistent information, you should not rely on it. This prospectus may only be used where it is legal to sell these securities. The information in this prospectus may only be accurate on the date of this prospectus, and the information in the documents incorporated by reference in this prospectus may only be accurate as of the respective dates of those documents.

It is expected that delivery of the common shares will be made against payment therefor on or about the date specified on the cover of this prospectus, which is the fourth business day following the date of pricing of the shares (such settlement cycle being referred to as “T+4”). You should note that trading of the common shares on the date of this prospectus may be affected by the T+4 settlement. See “Underwriting.”

Index to Financial Statements

PROSPECTUS SUMMARY

This summary highlights key information contained elsewhere in this prospectus. It does not contain all of the information that you should consider in making your investment decision. For a more complete understanding of us and this offering, you should read and consider the entire prospectus and the documents incorporated by reference in this prospectus, including the financial statements and notes to those financial statements included or incorporated by reference in this prospectus. Please read “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” for more information about important risks you should consider before investing in our common shares. We state our financial statements in Canadian dollars. In this prospectus, references to “Canadian dollars,” “dollars,” “C$” or “$” are to the currency of Canada, and references to “U.S. dollars” or “US$” are to the currency of the United States.

Our Company

We are a leading resource services provider to major oil and natural gas and other natural resource companies, with a primary focus in the Canadian oil sands. We provide a wide range of mining and site preparation, piling and pipeline installation services to our customers across the entire lifecycle of their projects. We are the largest provider of contract mining services in the oil sands area, and we believe we are the largest piling foundations installer in western Canada. In addition, we believe that we operate the largest fleet of equipment of any contract resource services provider in the oil sands. Our total fleet includes 690 pieces of diversified heavy construction equipment supported by over 660 ancillary vehicles. While our expertise covers heavy earth moving, piling and pipeline installation in any location, we have a specific capability operating in the harsh climate and difficult terrain of the oil sands and northern Canada.

Our core market is the Canadian oil sands, where we generated 72% of our fiscal 2007 revenue. The oil sands are located in three regions of northern Alberta: Athabasca, Cold Lake and Peace River. Oil sands operators produce and process bitumen, which is the extremely heavy oil trapped in the sands. According to the Alberta Energy and Utilities Board, or EUB, Canada’s oil sands are estimated to hold 315 billion barrels of ultimately recoverable oil reserves, with established reserves of almost 173 billion barrels as of the end of 2006, second only to Saudi Arabia and approximately six times the recoverable reserves in the United States. Approximately 32 billion barrels of the reserves in the oil sands are recoverable by open pit mining techniques. According to the Canadian Association of Petroleum Producers, or CAPP, oil sands production of bitumen is expected to increase from 1.1 million barrels per day, or “bpd,” in 2006 to approximately 3.0 million bpd by 2015 and account for 71% of total Canadian oil output, compared to 43% of output today. In order to achieve this increase in production, the Canadian National Energy Board, or NEB, estimates that approximately $95 billion of capital expenditures will be required over the period 2006 to 2015.

Our significant knowledge, experience, equipment capacity and scale of operations in the oil sands differentiates us from our competition. Our principal customers are the major operators in the oil sands, including all three of the producers that currently mine bitumen, being Syncrude Canada Ltd., Suncor Energy Inc. and Albian Sands Energy Inc. (a joint venture among Shell Canada Limited, Chevron Canada Limited and Western Oil Sands Inc.). Canadian Natural Resources Limited, or CNRL, another significant customer, is developing a bitumen-mining project in the oil sands. We provide services to every company in the oil sands that uses surface mining techniques for its production. We also provide site construction services for in-situ producers, which use horizontally drilled wells to inject steam into deposits and pump bitumen to the surface.

We have long-term relationships with most of our customers. For example, we have been providing services to Syncrude and Suncor since they pioneered oil sands development over 30 years ago. We believe our customers’ leases have an average remaining productive life of over 35 years. In addition, 34% of our revenues in fiscal 2007 were derived from recurring, long-term contracts, which assists in providing stability in our operations.

Index to Financial Statements

We provide services to our customers through three primary segments:

•

Mining and Site Preparation. Surface mining for oil sands and other natural resources; construction of infrastructure associated with mining operations and reclamation activities; clearing, stripping, excavating and grading for mining operations and industrial site construction for mega-projects; and underground utility installation for plant, refinery and commercial building construction;

•

Piling. Installing all types of driven and drilled piles, caissons and earth retention and stabilization systems for industrial projects primarily focused in the oil sands; and

•

Pipeline Installation. Installing transmission and distribution pipe made of various materials.

As a result of our extensive experience and expertise in the oil sands, we are often engaged at an early stage to help our customers plan and estimate costs to develop oil sands projects which may entail the expenditure of several billions of dollars over the three to four year life of project construction. We provide our customers with information about working in the oil sands, including details about the differential in the cost of undertaking various projects in the summer or the winter, constructability, equipment availability and requirements and availability of labor. Our early stage or “first-in” involvement in projects gives us the opportunity to demonstrate our capability and insight into our customers’ plans and schedules, thereby allowing us to achieve greater accuracy in forecasting our future equipment and labor needs.

For the year ended March 31, 2007, we had total revenue of $629.4 million and operating income of $51.1 million compared to total revenue of $492.2 million and operating income of $49.4 million for the year ended March 31, 2006. The following charts provide our revenues by segment and by end market for the year ended March 31, 2007:

LOGO

Index to Financial Statements

Our Competitive Strengths

Leading market position. We are the largest provider of contract mining services in the oil sands area, and we believe we are the largest piling foundations installer in western Canada. We have operated in western Canada for over 50 years and have participated in every significant oil sands mining project since operators first began working in the oil sands over 30 years ago. We believe the combination of our significant size, extensive experience and broad service offerings has allowed us to develop our leading market position and reputation as the service provider of choice in the oil sands.

Large, well-maintained equipment fleet strategically located in the Canadian oil sands. As of March 31, 2007, we had a heavy equipment fleet of over 370 units and over 290 ancillary vehicles located in the oil sands. Many of these units are among the largest pieces of equipment in the world and are designed for use in the largest earthmoving and mining applications globally. Our large, diverse fleet gives us flexibility in scheduling jobs and allows us to be responsive to our customers’ needs. We also operate four significant maintenance and repair centers on the sites of the major oil sands projects. These factors help us to be more efficient, while concurrently increasing our equipment utilization and thereby improving our profitability.

Broad service offering across a project’s lifecycle. We provide our customers with resource services to meet their needs across the entire lifecycle of a project. Given the capital intensive and long-term nature of oil sands projects, our broad service offerings provide us with a competitive advantage and position us to transition from one stage of the project to the next, as we typically have knowledge of a project during its initial planning and budgeting phase. We use this knowledge to help secure contracts during the initial construction of the project as well as plan for recurring and follow-on work. As a result, we have a reputation as a “first-in, last-out” service provider.

Long-term customer relationships. We have worked successfully for many years and believe we have well-established relationships with major oil sands and conventional oil and gas producers. These relationships are based on our success in meeting our customers’ requirements, including strong safety and performance records, a well-maintained, highly capable fleet with specific equipment dedicated to individual customers and a staff of well-trained, experienced supervisors, operators and mechanics. Historically, our largest customers by revenue have included Syncrude, Suncor and Albian.

Experienced management team. Our management team has well-established relationships with major oil sands producers and other resource industry leaders in our core markets. We believe that our management team’s experience in the resource services and mining industries enhances our ability to accomplish our strategic objectives.

Our Strategy

Capitalize on growth opportunities in the Canadian oil sands. We intend to leverage our market leadership position and successful track record with our customers in the oil sands to benefit from the expected rapid growth in this end market. The NEB estimates that between 2007 and 2015 $8.5 billion to $10.9 billion of annual capital expenditures will be required to achieve expected increases in production. To capitalize on these opportunities as they arise, we plan to continue to regularly add to our equipment fleet.

Leverage our complementary services. We intend to build on our “first-in” position to cross-sell other services that we provide. Our complementary service segments allow us to compete for many different forms of business. Given our technical capabilities, performance history and on-site presence, we are well positioned to compete for new business in our service segments. Unplanned work requirements frequently arise with little

Index to Financial Statements

notice, which we are well-positioned to execute, given our on-site location and complementary service offerings. Furthermore, we intend to pursue selective acquisition growth opportunities that expand our complementary service offerings.

Increase our recurring revenue base. We provide services both during construction and while the project is in operation. Work required as an integral part of an operating project provides us with the opportunity to perform recurring services for our customers. Over the past several years we have increased our recurring revenues from mining services, from 20% of revenues in fiscal 2004 to 34% in fiscal 2007. Oil sands operators’ needs for these types of services will increase as they expand their operations and as new oil sands operations come on line.

Leverage long-term relationships with existing customers. Several of our oil sands customers have announced intentions to increase their production capacity by expanding the infrastructure at their sites. We intend to continue to build on our relationships with these and other existing oil sands customers to win a substantial share of the services outsourced in connection with these projects.

Increase our presence outside of the Canadian oil sands. Canada has significant reserves of various natural resources, including diamonds, uranium, coal and gold. We intend to utilize the expertise we have gained in the oil sands to provide similar services to other natural resource mining companies.

Enhance operating efficiencies to improve revenue and margins. We have initiated an operational improvement plan focused on implementing systems and process improvements, performance measurement techniques, enhanced communication and improved organizational effectiveness. This plan is designed to enhance our profitability, competitiveness and ability to effectively respond to opportunities in the markets we serve by improving the availability of our equipment.

Our Markets

Our business is primarily driven by the demand for our services from the development, expansion and operation of oil sands projects.

Canadian Oil Sands

Increasing global energy demand and improvements in mining and in-situ technology have resulted in a significant increase in Canadian oil sands investments. There are currently two main methods of oil sands extraction: open pit mining and in-situ. We currently provide most of our services to companies operating open pit mines to recover bitumen reserves. These customers utilize our services for surface mining, site preparation, piling, pipe installation, site maintenance, equipment and labor supply and land reclamation.

Outlook. According to the NEB, as of June 2006, there were 21 mining and upgrader projects in various stages, ranging from announcement to construction, with start-up dates through 2010. If all of these projects proceed as scheduled, the planned investment in new projects for 2006 through 2010 will exceed $38 billion and an additional $17 billion will be invested in project additions or existing projects over the same period. Oil sands production has grown four-fold since 1990 and exceeded one million barrels per day in 2005. CAPP expects oil sands production to reach approximately 3.0 million barrels per day and account for 71% of total Canadian oil production by 2015. Both the Canadian Energy Research Institute, or CERI, and the NEB have found that even at a price of approximately $25 per barrel the rate of oil sands supply can profitably double in the next 10 to 12 years.

Pipeline Infrastructure and Construction. To transport the increased production expected from the oil sands and to provide natural gas as an energy source to the oil sands region, significant investment will be required to

Index to Financial Statements

expand pipeline capacity. To date, there have been significant greenfield and expansion projects announced. We are in various stages of discussions to provide services for some of these projects and believe we are well positioned to compete for these sizeable pipeline opportunities. For example, we have just completed negotiations with Kinder Morgan Canada for the supply of pipeline construction services described in this Summary under “Recent Developments.”

Conventional Oil and Gas

Minerals Mining

According to Natural Resources Canada, the diamond mining industry has grown from 2.6 million carats of production in 2000 to an estimated 13.2 million carats of production in 2006, representing a compounded annual growth rate of approximately 38%, and establishing Canada as the third largest diamond producing country in the world by value. We believe Canadian diamond mining will continue to grow. Outside the oil sands, we have identified the growing Canadian diamond mining industry as a primary target for new business opportunities.

We intend to build on our core services and strong regional presence to capitalize on the opportunities in the minerals mining industries of Canada.

Commercial and Public Construction

According to the government agency Statistics Canada and the Alberta government, the Canadian commercial and public construction market was approximately $25 billion in 2006 and is expected to grow 3% annually through 2009. Western Canada has experienced and is expected to continue to experience strong economic and population growth. The Alberta government has responded to this growth by allocating approximately $18.2 billion to public facilities and infrastructure improvement and expansion projects from 2008 to 2010.

According to the Alberta government, as of May 2007, the inventory of planned commercial, retail and residential projects in Alberta was valued at approximately $14.1 billion. The 2010 Olympic Winter Games in British Columbia will require approximately $4.0 billion in infrastructure and construction spending. The significant resources and capital intensive nature of the core infrastructure and construction services required to meet these demands, along with our strong local presence and significant regional experience, position us to capitalize on the growing infrastructure demands of western Canada.

Index to Financial Statements

Initial Public Offering and Reorganization

On November 28, 2006, NACG Holdings Inc. and its wholly-owned subsidiaries, NACG Preferred Corp. and North American Energy Partners Inc., amalgamated into one entity, North American Energy Partners Inc. Concurrently with the amalgamation, the amalgamated North American Energy Partners Inc. completed the initial public offering in the United States and Canada of its voting common shares, which are the common shares being offered by this prospectus. Prior to the amalgamation and initial public offering, NACG Holdings Inc. repurchased the Series A preferred shares issued by NACG Preferred Corp. for $27.0 million and the Series A preferred shares issued by the pre-amalgamated North American Energy Partners Inc. for their redemption value of $1.0 million, and each Series B preferred share issued by the pre-amalgamated North American Energy Partners Inc. was converted into 100 NACG Holdings Inc. common shares.

Recent Developments

Preliminary Unaudited Results for Quarter Ended June 30, 2007

Though our financial statements for the quarter ended June 30, 2007 are not yet complete, our preliminary internal financial information indicates that revenue for that quarter was between $160 million and $165 million, compared to $138 million for the same period in the prior year, and that gross profit for the quarter ended June 30, 2007 was between $16 million and $20 million, compared to $33 million for the same period in 2006. The increase in revenue is primarily the result of continued strong growth in the mining and site preparation and piling segments. The decrease in gross profit is primarily attributable to (1) recognition of revenue of $6.1 million in the quarter ended June 30, 2006 related to the settlement of a claim for which the associated expenses had been recognized in prior periods, (2) a single large job that had a significant positive effect on gross profit in the prior year period and (3) per hour equipment cost being higher than the prior year period primarily as a result of higher tire and rental costs. These preliminary results are subject to change and have not yet been reviewed by our external auditors. Further, developments subsequent to the end of a quarter can impact a reported quarter positively or negatively. Our financial results for the quarter ended June 30, 2007 are not necessarily indicative of the results that may be expected for the fiscal year ending March 31, 2008.

New Pipeline Contract

We have entered into a contract with Kinder Morgan Canada for the supply of pipeline construction services for the Anchor Loop phase of the TMX pipeline between Edmonton and Vancouver. We will begin mobilization soon, and construction is expected to begin in late summer of this year. Completion of this contract, valued at approximately $185 million to us, is expected in approximately 18 months.

Corporate Information

We were incorporated under the Canada Business Corporations Act in October 2003 in connection with the acquisition on November 26, 2003 (the “Acquisition”) of certain businesses from Norama Ltd., our predecessor company. See “Business—Our History.” Our head office is located at Zone 3, Acheson Industrial Area, 2-53016 Highway 60, Acheson, Alberta, T7X 5A7, Canada, our registered office is located at 2700, 10155-102 Street, Edmonton, Alberta, T5J 4G8, Canada, and our telephone number is (780) 960-7171. Our website address is www.naepi.ca. The information contained in or accessible through our website is not a part of this prospectus or the registration statement of which this prospectus forms a part.

Index to Financial Statements

The Offering

Common shares offered by the selling shareholders

7,268,351 shares (8,358,604 shares if the underwriters’ over-allotment option is fully exercised)

Common shares to be outstanding after this offering

35,752,060 shares

Common shares to be owned by the selling shareholders after this offering

8,264,427 shares (7,174,174 shares if the underwriters’ over-allotment option is fully exercised)

Use of proceeds

We will not receive any proceeds from the sale of shares by the selling shareholders.

New York Stock Exchange symbol

“NOA”

Toronto Stock Exchange symbol

“NOA”

Unless otherwise indicated, all information in this prospectus assumes the underwriters do not exercise their over-allotment option and references to the number of common shares to be outstanding after the completion of this offering are based on 35,752,060 shares outstanding on July 27, 2007 and do not include:

•

1,999,440 shares issuable upon exercise of outstanding stock options under our Amended and Restated 2004 Share Option Plan as of June 28, 2007; and

•

1,519,786 additional shares reserved for issuance under our Amended and Restated 2004 Share Option Plan.

Risk Factors

Investing in our common shares involves substantial risk. Please read “Risk Factors” beginning on page 14 for a discussion of certain factors you should consider in evaluating an investment in our common shares.

Index to Financial Statements

Summary Consolidated Historical Financial Data

The summary consolidated historical financial data presented below as of and for the fiscal years ended March 31, 2007, 2006 and 2005 is derived from our audited consolidated financial statements included elsewhere in this prospectus. The information presented below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our audited consolidated financial statements and related notes included elsewhere in this prospectus. All of the financial information presented below has been prepared in accordance with Canadian GAAP, which differs in certain significant respects from U.S. GAAP. For a discussion of the principal differences between Canadian GAAP and U.S. GAAP as they pertain to us, see note 27 to our consolidated financial statements included elsewhere in this prospectus.


	Year Ended March 31,
	2007			2006			2005
	(Dollars in thousands except per share amounts)
Statement of operations data:
Revenue	$	629,446		$	492,237		$	357,323
Project costs		363,930			308,949			240,919
Equipment costs		122,306			64,832			52,831
Equipment operating lease expense		19,740			16,405			6,645
Depreciation		31,034			21,725			20,762

Gross profit		92,436			80,326			36,166
General and administrative costs		39,769			30,903			22,873
Loss (gain) on sale of plant and equipment		959			(733	)		494
Amortization of intangible assets		582			730			3,368

Operating income before the undernoted		51,126			49,426			9,431
Interest expense (a)		37,249			68,776			31,141
Foreign exchange gain		(5,044	)		(13,953	)		(19,815	)
Gain on repurchase of NACG Preferred Corp. Series A preferred shares (b)		(9,400	)		—			—
Loss on extinguishment of debt (b)		10,935			2,095			—
Other income		(904	)		(977	)		(421	)
Realized and unrealized (gain) loss on derivative financial instruments		(196	)		14,689			43,113

Income (loss) before income taxes		18,486			(21,204	)		(44,587	)
Income taxes (benefit)		(2,593	)		737			(2,264	)

Net income (loss) (c)	$	21,079		$	(21,941	)	$	(42,323	)

Earnings Per Share
Basic	$	0.87		$	(1.18	)	$	(2.28	)
Diluted	$	0.83		$	(1.18	)	$	(2.28	)

Weighted average number of common shares
Basic		24,352,156			18,574,800			18,539,720
Diluted		25,443,907			18,574,800			18,539,720

Balance sheet data (end of period):
Cash	$	7,895		$	42,804		$	17,924
Plant and equipment, net		255,963			184,562			177,089
Total assets		710,736			568,682			540,155
Total debt (d)		260,789			314,959			310,402
Other long-term financial liabilities (d)		60,863			141,179			86,723
Total long-term financial liabilities (d)		297,957			453,092			395,354
NACG Preferred Corp. Series A preferred shares (b)		—			35,000			35,000
Pre-amalgamated North American Energy Partners Inc. Series A preferred shares (b)		—			375			—
Pre-amalgamated North American Energy Partners Inc. Series B preferred shares (b)		—			42,193			—
Total shareholders’ equity (b)		244,278			18,111			38,829

Other financial data:
EBITDA (e)	$	87,351		$	70,027		$	10,684
Consolidated EBITDA (e)		90,235			72,422			34,448
Cash provided by (used in) operating activities		10,052			35,092			(5,673	)
Cash used in investing activities		(107,972	)		(23,396	)		(24,215	)
Cash provided by financing activities		63,011			13,184			11,217
Capital expenditures, net of capital leases		110,019			28,852			24,839

Index to Financial Statements

(a)	Interest expense consists of the following:


	Year Ended March 31,
	2007		2006		2005
	(Dollars in thousands)
Interest on senior notes	$	27,417	$	28,838	$	23,189
Interest on capital lease obligations		725		457		230
Interest on senior secured credit facility		—		564		3,274
Interest on NACG Preferred Corp. Series A preferred shares		1,400		—		—
Accretion and change in redemption value of pre-amalgamated North American Energy Partners Inc. Series B preferred shares		2,489		34,668		—
Accretion of pre-amalgamated North American Energy Partners Inc. Series A preferred shares		625		54		—

Interest on long-term debt		32,656		64,581		26,693
Amortization of deferred financing costs		3,436		3,338		2,554
Other interest		1,157		857		1,894

Interest expense	$	37,249	$	68,776	$	31,141

(b)

On November 28, 2006, prior to the consummation of our initial public offering discussed below, NACG Holdings Inc. amalgamated with its wholly-owned subsidiaries, NACG Preferred Corp. and North American Energy Partners Inc. The amalgamated entity continued under the name North American Energy Partners Inc. The voting common shares of the new entity, North American Energy Partners Inc., were the shares sold in the initial public offering.

On November 28, 2006, prior to the amalgamation:

•

NACG Holdings Inc. acquired the NACG Preferred Corp. Series A preferred shares with a carrying value of $35.0 million together with related accrued and subsequently forfeited dividends of $1.4 million in exchange for a promissory note in the amount of $27.0 million. We recorded a gain of $9.4 million on the repurchase of the NACG Preferred Corp. Series A preferred shares.

•

NACG Holdings Inc. repurchased the pre-amalgamated North American Energy Partners Inc. Series A preferred shares for their redemption value of $1.0 million. NACG Holdings Inc. also cancelled the consulting and advisory services agreement with The Sterling Group, L.P., Genstar Capital, L.P., Perry Strategic Capital Inc. and SF Holding Corp. (whom we refer to collectively as the “sponsors”), under which NACG Holdings Inc. had received ongoing consulting and advisory services with respect to the organization of the companies, employee benefit and compensation arrangements and other matters. The consideration paid for the cancellation of the consulting and advisory services agreement on the closing of the offering was $2.0 million, which was recorded as general and administrative expense in the consolidated statement of operations. Under the consulting and advisory services agreement, the sponsors also received a fee of $0.9 million, or 0.5% of the aggregate gross proceeds to us from the offering, which was recorded as a share issue cost.

•

Each holder of pre-amalgamated North American Energy Partners Inc. Series B preferred shares received 100 common shares of NACG Holdings Inc. for each pre-amalgamated North American Energy Partners Inc. Series B preferred share held as a result of NACG Holdings Inc. exercising a call option to acquire the pre-amalgamated North American Energy Partners Inc. Series B preferred shares. Upon exchange, the carrying value in the amount of $44.7 million for the pre-amalgamated North American Energy Partners Inc. Series B preferred shares on the exercise date was transferred to share capital.

On November 28, 2006, we completed our initial public offering of 8,750,000 common voting shares for total gross proceeds of $158.6 million. Net proceeds from our initial public offering, after deducting underwriting fees and offering expenses, were $140.9 million. Subsequent to our initial public offering, the underwriters exercised their over-allotment option to purchase 687,500 additional voting common shares for gross proceeds of $12.6 million. Net proceeds from the over-allotment, after deducting underwriting fees and offering expenses, were $11.7 million. Total net proceeds from our initial public offering and subsequent over-allotment were $152.6 million.

Index to Financial Statements

The net proceeds from our initial public offering and subsequent over-allotment were used:

•

to repurchase all of our outstanding 9% senior secured notes due 2010 for $74.7 million plus accrued interest of $3.0 million. The notes were redeemed at a premium of 109.26% resulting in a loss on extinguishment of $6.3 million. The loss on extinguishment, along with the write-off of deferred financing fees of $4.3 million and other costs of $0.3 million, was recorded as a loss on extinguishment of debt in the consolidated statement of operations;

•

to repay the promissory note in respect of the repurchase of the NACG Preferred Corp. Series A preferred shares for $27.0 million as described above;

•

to purchase certain equipment leased under operating leases for $44.6 million;

•

to cancel the consulting and advisory services agreement with the sponsors for $2.0 million; and

•

$1.3 million for working capital and general corporate purposes.

(c)	Our financial statements have been prepared in accordance with Canadian GAAP, which differs in certain respects from U.S. GAAP. If U.S. GAAP were employed, our net income (loss) would be adjusted as follows:


	Year Ended March 31,
	2007			2006			2005
	(Dollars in thousands, except per share amounts)
Net income (loss)—Canadian GAAP	$	21,079		$	(21,941	)	$	(42,323	)
Capitalized interest(1)		249			847			—
Depreciation of capitalized interest(1)		(143	)		—			—
Amortization using effective interest method(2)		1,246			590			—
Realized and unrealized loss on derivative financial instruments(3)		348			(484	)		—
Difference between accretion of Series B Preferred Shares(4)		249			—			—

Income (loss) before income taxes		23,028			(20,988	)		(42,323	)
Income taxes: Deferred income taxes		(954	)		—			—

Net income (loss)—U.S. GAAP	$	22,074		$	(20,988	)	$	(42,323	)

Net income (loss) per share—Basic—U.S. GAAP	$	0.91		$	(1.13	)	$	(2.28	)
Net income (loss) per share—Diluted—U.S. GAAP	$	0.87		$	(1.13	)	$	(2.28	)

The cumulative effect of material differences between Canadian and U.S. GAAP on the consolidated shareholders’ equity is as follows:


	March 31, 2007			March 31, 2006			March 31, 2005
	(Dollars in thousands)
Shareholders’ equity (as reported)—Canadian GAAP	$	244,278		$	18,111		$	38,829
Capitalized interest(1)		1,096			847			—
Depreciation of capitalized interest(1)		(143	)		—			—
Amortization using effective interest method(2)		1,836			590			—
Realized and unrealized loss on derivative financial instruments(3)		(136	)		(484	)		—
Excess of fair value of amended Series B preferred shares over carrying value of original series B preferred shares(4)		—			(3,707	)		—
Deferred income taxes		(954	)		—			—

Shareholders’ equity—U.S. GAAP	$	245,977		$	15,357		$	38,829

(1)

U.S. GAAP requires capitalization of interest costs as part of the historical cost of acquiring certain qualifying assets that require a period of time to prepare for their intended use. This is not required under Canadian GAAP. Accordingly, the capitalized amount is subject to depreciation in accordance with our policies when the asset is available for service.

(2)

Under Canadian GAAP, we defer and amortize debt issue costs on a straight-line basis over the stated term of the related debt. Under U.S. GAAP, we are required to amortize financing costs over the stated term of the related debt using the effective interest method resulting in a consistent interest rate over the term of the debt in accordance with Accounting Principles Board Opinion No. 21 (“APB 21”).

Index to Financial Statements

(3)

Statement of Financial Accounting Standard No. 133, Accounting for Derivative Instruments and Hedging Activities (“SFAS 133”) establishes accounting and reporting standards requiring that every derivative instrument (including certain derivative instruments embedded in other contracts and debt instruments) be recorded in the balance sheet as either an asset or liability measured at its fair value. On November 26, 2003, we issued 8³/4% senior notes for US$200 million (C$263 million). On May 19, 2005, we issued 9% senior secured notes for US$60.4 million (C$76.3 million), subsequently retired on November 28, 2006. Both of these issues included certain contingent embedded derivatives which provided for the acceleration of redemption by the holder at a premium in certain instances. These embedded derivatives met the criteria for bifurcation from the debt contract and separate measurement at fair value. The embedded derivatives have been measured at fair value and classified as part of the carrying amount of the Senior Notes on the consolidated balance sheet, with changes in the fair value being recorded in net income as realized and unrealized (gain) loss on derivative financial instruments for the period under U.S. GAAP. Under Canadian GAAP, separate accounting of embedded derivatives from the host contract is not permitted by EIC-117.

(4)

Prior to the modification of the terms of the pre-amalgamated North American Energy Partners Inc. Series B preferred shares, there were no differences between Canadian GAAP and U.S. GAAP related to the pre-amalgamated North American Energy Partners Inc. Series B preferred shares. As a result of the modification of terms of the pre-amalgamated North American Energy Partners Inc.’s Series B preferred shares on March 30, 2006, under Canadian GAAP, we continued to classify the pre-amalgamated North American Energy Partners Inc. Series B preferred shares as a liability and was accreting the carrying amount of $42.2 million on the amendment date (March 30, 2006) to their December 31, 2011 redemption value of $69.6 million using the effective interest method. Under U.S. GAAP, we recognized the fair value of the amended pre-amalgamated North American Energy Partners Inc. Series B preferred shares as minority interest as such amount was recognized as temporary equity in the accounts of the pre-amalgamated North American Energy Partners Inc. in accordance with EITF Topic D-98 and recognized a charge of $3.7 million to retained earnings for the difference between the fair value and the carrying amount of the Series B preferred shares on the amendment date. Under U.S. GAAP, we were accreting the initial fair value of the amended pre-amalgamated North American Energy Partners Inc. Series B preferred shares of $45.9 million recorded on their amendment date (March 30, 2006) to the December 31, 2011 redemption value of $69.6 million using the effective interest method, which was consistent with the treatment of the pre-amalgamated North American Energy Partners Inc. Series B preferred shares as temporary equity in the financial statements of the pre-amalgamated North American Energy Partners Inc. The accretion charge was recognized as a charge to minority interest (as opposed to retained earnings in the accounts of the pre-amalgamated North American Energy Partners Inc.) under U.S. GAAP and interest expense in our financial statements under Canadian GAAP. On November 28, 2006, we exercised a call option to acquire all of the issued and outstanding Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. in exchange for 7,524,400 of our common shares. For Canadian GAAP purposes, we recorded the exchange by transferring the carrying value of the Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. on the exercise date of $44.7 million to common shares. For U.S. GAAP purposes, the conversion has been accounted for as a combination of entities under common control as all of the shareholders of the Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. were also our common shareholders resulting in the reclassification of the carrying value of the minority interest on the exercise date of $48.1 million to common shares.

(d)	Total debt as of March 31, 2007 consists of the following (in thousands):


Revolving line of credit	$	20,500
Obligations under capital leases, including current portion		9,709
8³/4% senior notes due 2011		230,580

Total debt	$	260,789

Index to Financial Statements

Our 8³/4% senior notes are stated at the current exchange rate at each balance sheet date. We have entered into cross-currency and interest rate swaps, which represent an economic hedge of the 8³/4% senior notes. At maturity, we will be required to pay $263 million in order to retire these senior notes and the swaps. This amount reflects the fixed exchange rate of C$1.315=US$1.00 established as of November 26, 2003, the date of inception of the swap contracts.

Other long-term financial liabilities consist of derivative financial instruments and redeemable preferred shares.

Total long-term financial liabilities consists of total debt, excluding current portion, plus our redeemable shares and derivative financial instruments.

(e)

EBITDA is calculated as net income (loss) before interest expense, income taxes, depreciation and amortization. Consolidated EBITDA is defined as EBITDA, excluding the effects of foreign exchange gain or loss, realized and unrealized gain or loss on derivative financial instruments, non-cash stock-based compensation expense, gain or loss on disposal of plant and equipment and certain other non-cash items included in the calculation of net income (loss). We believe that EBITDA is a meaningful measure of the performance of our business because it excludes items, such as depreciation and amortization, interest and taxes, that are not directly related to the operating performance of our business. Management reviews EBITDA to determine whether capital assets are being allocated efficiently. In addition, our revolving credit facility requires us to maintain a minimum interest coverage ratio and a maximum senior leverage ratio, which are calculated using Consolidated EBITDA. Non-compliance with these financial covenants could result in our being required to immediately repay all amounts outstanding under our revolving credit facility. EBITDA and Consolidated EBITDA are not measures of performance under Canadian GAAP or U.S. GAAP and our computations of EBITDA and Consolidated EBITDA may vary from others in our industry. EBITDA and Consolidated EBITDA should not be considered as alternatives to operating income or net income as measures of operating performance or cash flows as measures of liquidity. EBITDA and Consolidated EBITDA have important limitations as analytical tools, and you should not consider them in isolation, or as substitutes for analysis of our results as reported under Canadian GAAP or U.S. GAAP. For example, EBITDA and Consolidated EBITDA:

•

do not reflect our cash expenditures or requirements for capital expenditures or capital commitments;

•

do not reflect changes in, or cash requirements for, our working capital needs;

•

do not reflect the interest expense or the cash requirements necessary to service interest or principal payments on our debt;

•

exclude tax payments that represent a reduction in cash available to us; and

•

do not reflect any cash requirements for assets being depreciated and amortized that may have to be replaced in the future.

In addition, Consolidated EBITDA excludes unrealized foreign exchange gains and losses and unrealized and realized gains and losses on derivative financial instruments, which, in the case of unrealized losses, may ultimately result in a liability that will need to be paid and, in the case of realized losses, represents an actual use of cash during the period.

A reconciliation of net income (loss) to EBITDA and Consolidated EBITDA is as follows:


	Year Ended March 31,
	2007			2006			2005
	(Dollars in thousands)
Net income (loss)	$	21,079		$	(21,941	)	$	(42,323	)
Adjustments:
Interest expense		37,249			68,776			31,141
Income taxes (benefit)		(2,593	)		737			(2,264	)
Depreciation		31,034			21,725			20,762
Amortization of intangible assets		582			730			3,368

EBITDA	$	87,351		$	70,027		$	10,684

Index to Financial Statements

A reconciliation of EBITDA to Consolidated EBITDA is as follows:



	Year Ended March 31,
	2007			2006			2005
	(Dollars in thousands)
EBITDA	$	87,351		$	70,027		$	10,684
Adjustments:
Unrealized foreign exchange gain on senior notes		(5,017	)		(14,258	)		(20,340	)
Realized and unrealized (gain) loss on derivative financial instruments		(196	)		14,689			43,113
Loss (gain) on disposal of plant and equipment		959			(733	)		494
Stock-based compensation expense		2,101			923			497
Write-off of deferred financing costs		4,342			1,774			—
Write down of other assets to replacement cost		695			—			—

Consolidated EBITDA	$	90,235		$	72,422		$	34,448

Index to Financial Statements

An investment in our common shares entails a high degree of risk. You should carefully consider the following risk factors and the matters identified under “Cautionary Note Regarding Forward-Looking Statements” and other information included or incorporated by reference in this prospectus before deciding to purchase our common shares. If any of those matters or the events underlying these risks actually occur, our business, financial condition and results of operations could be materially adversely affected and you may lose all or part of your investment.

Notwithstanding the NEB’s estimates regarding new investment and growth in the Canadian oil sands, planned and anticipated projects in the oil sands and other related projects may not materialize. The underlying assumptions on which the projects are based are subject to significant uncertainties, and actual investments in the oil sands could be significantly less than estimated. Projected investments and new projects may be postponed or cancelled for any number of reasons, including among others:

Changes in our customers’ perception of oil prices over the long-term could cause our customers to defer, reduce or stop their investment in oil sands projects, which would, in turn, reduce our revenue from those customers.

Due to the amount of capital investment required to build an oil sands project, or construct a significant expansion to an existing project, investment decisions by oil sands operators are based upon long-term views of the economic viability of the project. Economic viability is dependent upon the anticipated revenues the project will produce, the anticipated amount of capital investment required and the anticipated cost of operating the project. The most important consideration is the customer’s view of the long-term price of oil which is influenced by many factors, including the condition of developed and developing economies and the resulting demand for oil and gas, the level of supply of oil and gas, the actions of the Organization of Petroleum Exporting Countries, governmental regulation, political conditions in oil producing nations, including those in the Middle East, war or the threat of war in oil producing regions and the availability of fuel from alternate sources. If our customers believe the long-term outlook for the price of oil is not favorable, or believe oil sands projects are not viable for any other reason, they may delay, reduce or cancel plans to construct new oil sands projects or expansions to existing projects. Delays, reductions or cancellations of major oil sands projects could have a material adverse impact on our financial condition and results of operations.

Insufficient pipeline, upgrading and refining capacity could cause our customers to delay, reduce or cancel plans to construct new oil sands projects or expand existing projects, which would, in turn, reduce our revenue from those customers.

For our customers to operate successfully in the oil sands, they must be able to transport the bitumen produced to upgrading facilities and transport the upgraded oil to refineries. Some oil sands projects have upgraders at the mine site and others transport bitumen to upgraders located elsewhere. While current pipeline and upgrading capacity is sufficient for current production, future increases in production from new oil sands projects and expansions to existing projects will require increased upgrading and pipeline capacity. If these

Index to Financial Statements

increases do not materialize, whether due to inadequate economics for the sponsors of such projects, shortages of labor or materials or any other reason, our customers may be unable to efficiently deliver increased production to market and may therefore delay, reduce or cancel planned capital investment. Such delays, reductions or cancellations of major oil sands projects would adversely affect our prospects and could have a material adverse impact on our financial condition and results of operations.

Lack of sufficient governmental infrastructure to support the growth in the oil sands region could cause our customers to delay, reduce or cancel their future expansions, which would, in turn, reduce our revenue from those customers.

The development in the oil sands region has put a great strain on the existing government infrastructure, necessitating substantial improvements to accommodate growth in the region. The local government having responsibility for a majority of the oil sands region has been exceptionally impacted by this growth and is not currently in a position to provide the necessary additional infrastructure. In an effort to delay further development until infrastructure funding issues are resolved, the local governmental authority has intervened in two recent hearings considering applications by major oil sands companies to the EUB for approval to expand their operations. Similar action could be taken with respect to any future applications. The EUB has issued conditional approval for the expansion in respect of one of the hearings despite the intervention by the local government authority, and a decision in the second hearing is pending. The EUB has indicated that it believes that additional infrastructure investment in the oil sands region is needed and that there is a short window of opportunity to make these investments in parallel with continued oil sands development. If the necessary infrastructure is not put in place, future growth of our customers’ operations could be delayed, reduced or canceled which could in turn adversely affect our prospects and could have a material adverse impact on our financial condition and results of operations.

Shortages of qualified personnel or significant labor disputes could adversely affect our business.

Alberta, and in particular the oil sands area, has had and continues to have a shortage of skilled labor and other qualified personnel. New mining projects in the area will only make it more difficult for us and our customers to find and hire all the employees required to work on these projects. We are continuously exploring innovative ways to hire the people we need, which include more project managers, trades people and other skilled employees. We have expanded our efforts to find qualified candidates outside of Canada who might relocate to our area. In addition, we have undertaken more extensive training of existing employees and we are enhancing our use of technology and developing programs to provide better working conditions. We believe the labor shortage, which affects us and all of our major customers, will continue to be a challenge for everyone in the mining and oil and gas industries in western Canada for the foreseeable future. If we are not able to recruit and retain enough employees with the appropriate skills, we may be unable to maintain our customer service levels, and we may not be able to satisfy any increased demand for our services. This, in turn, could have a material adverse effect on our business, financial condition and results of operations. If our customers are not able to recruit and retain enough employees with the appropriate skills, they may be unable to develop projects in the oil sands area.

Substantially all of our hourly employees are subject to collective bargaining agreements to which we are a party or are otherwise subject. Any work stoppage resulting from a strike or lockout could have a material adverse effect on our business, financial condition and results of operations. In addition, our customers employ workers under collective bargaining agreements. Any work stoppage or labor disruption experienced by our key customers could significantly reduce the amount of our services that they need.

Cost overruns by our customers on their projects may cause our customers to terminate future projects or expansions which could adversely affect the amount of work we receive from those customers.

Oil sands development projects require substantial capital expenditures. In the past, several of our customers’ projects have experienced significant cost overruns, impacting their returns. If cost overruns continue

Index to Financial Statements

to challenge our customers, they could reassess future projects and expansions which could adversely affect the amount of work we receive from our customers.

Our ability to grow our operations in the future may be hampered by our inability to obtain long lead time equipment and tires, which are currently in limited supply.

Our ability to grow our business is, in part, dependent upon obtaining equipment on a timely basis. Due to the long production lead times of suppliers of large mining equipment, we must forecast our demand for equipment many months or even years in advance. If we fail to forecast accurately, we could suffer equipment shortages or surpluses, which could have a material adverse impact on our financial condition and results of operations.

Global demand for tires of the size and specifications we require is exceeding the available supply. For example, two of our trucks are currently not in service because we cannot get tires for these particular trucks. We expect the supply/demand imbalance for certain tires to continue for several years. Our inability to procure tires to meet the demands for our existing fleet as well as to meet new demand for our services could have an adverse effect on our ability to grow our business.

Our customer base is concentrated, and the loss of or a significant reduction in business from a major customer could adversely impact our financial condition.

Most of our revenue comes from the provision of services to a small number of major oil sands mining companies. Revenue from our five largest customers represented approximately 65%, 70% and 68% of our total revenue for the fiscal years ended March 31, 2007, 2006 and 2005, respectively, and those customers are expected to continue to account for a significant percentage of our revenues in the future. In addition, the majority of our pipeline revenues in prior fiscal years resulted from work performed for one customer. If we lose or experience a significant reduction of business from one or more of our significant customers, we may not be able to replace the lost work with work from other customers. Our long-term contracts typically allow our customers to unilaterally reduce or eliminate the work which we are to perform under the contract. Our contracts generally allow the customer to terminate the contract without cause. The loss of or significant reduction in business with one or more of our major customers, whether as a result of completion of a contract, early termination or failure or inability to pay amounts owed to us, could have a material adverse effect on our business and results of operations.

Because most of our customers are Canadian energy companies, a downturn in the Canadian energy industry could result in a decrease in the demand for our services.

Most of our customers are Canadian energy companies. A downturn in the Canadian energy industry could cause our customers to slow down or curtail their current production and future expansions which would, in turn, reduce our revenue from those customers. Such a delay or curtailment could have a material adverse impact on our financial condition and results of operations.

Lump-sum and unit-price contracts expose us to losses when our estimates of project costs are lower than actual costs.

Approximately 66%, 58% and 51% of our revenue for the fiscal years ended March 31, 2007, 2006 and 2005, respectively, was derived from lump-sum and unit-price contracts. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates—Revenue Recognition.” Lump-sum and unit-price contracts require us to guarantee the price of the services we provide and thereby expose us to losses if our estimates of project costs are lower than the actual project costs we incur. Our profitability under these contracts is dependent upon our ability to accurately predict the costs associated with our services. The costs we

Index to Financial Statements

actually incur may be affected by a variety of factors beyond our control. Factors that may contribute to actual costs exceeding estimated costs and which therefore affect profitability include, without limitation:

When we are unable to accurately estimate the costs of lump-sum and unit-price contracts, or when we incur unrecoverable cost overruns, the related projects result in lower margins than anticipated or may incur losses, which could adversely impact our results of operations, financial condition and cash flow. For example, on a major site preparation and underground installation contract in fiscal 2005, a combination of unfavorable weather conditions hindering productivity, higher than expected costs due to labor shortages, schedule acceleration and higher than expected costs resulting from underestimation of the project’s complexity at the time the contract bid was prepared led to significant cost overruns. This had a significant impact on our operations in our 2005 and 2006 fiscal years. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Consolidated Financial Highlights—Fiscal Year Ended March 31, 2006 Compared to Fiscal Year Ended March 31, 2005.” More recently, our Pipeline segment incurred a loss of $11.5 million on three unit-price contracts in fiscal 2007. The losses were caused primarily by increased costs associated with increased scope and condition changes not recovered from our clients. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Segment Operations—Pipeline—Fiscal Year Ended March 31, 2007 Compared to Fiscal Year Ended March 31, 2006.”

Until we establish and maintain effective internal controls over financial reporting, we cannot assure you that we will have appropriate procedures in place to eliminate future financial reporting inaccuracies and avoid delays in financial reporting.

We have had continuing problems providing accurate and timely financial information and reports and restated the pre-amalgamated North American Energy Partners Inc.’s financial statements three times since the beginning of our 2005 fiscal year, in two cases due to ineffective internal controls:

Index to Financial Statements

Each of these restatements resulted in our inability to file the pre-amalgamated North American Energy Partners Inc.’s financial statements within the deadlines imposed by covenants in the indentures governing our 8³/4% senior notes and 9% senior secured notes.

In the course of preparing our fiscal 2007 financial statements, we identified a number of material weaknesses in our internal control over financial reporting. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Internal Control over Financial Reporting.” Until we establish and maintain effective internal controls and procedures for financial reporting, we may not have appropriate measures in place to eliminate financial statement inaccuracies and avoid delays in financial reporting, which could cause investors to lose confidence in our financial statements and the trading price of our common shares could be adversely affected.

If, as of the end of our 2008 fiscal year, we are unable to assert, or our auditors are unable to attest, that our internal control over financial reporting is effective, investors could lose confidence in our reported financial information, and the trading price of our common shares and our business could be adversely affected.

We are in the process of documenting, and plan to test our internal control procedures in order to satisfy the requirements of Section 404 of the Sarbanes-Oxley Act, commencing with our year ending March 31, 2008. Effective March 31, 2008, the Sarbanes-Oxley Act requires an annual assessment by management of the effectiveness of internal control over financial reporting and an attestation report by independent auditors on the effectiveness of internal control over financial reporting. We cannot be certain that we will be able to comply with all of our reporting obligations and successfully complete the procedures, certification and attestation requirements of Section 404 of the Sarbanes-Oxley Act in a timely manner. During the course of our testing we may identify deficiencies that we may not be able to remedy in time to meet the deadline imposed by the Sarbanes-Oxley Act for compliance with the requirements of Section 404. Effective internal control over financial reporting is important to help produce reliable financial reports and to prevent financial fraud. If, as of the end of our 2008 fiscal year, we are unable to assert that our internal control over financial reporting is effective or if our independent auditors are unable to attest that our internal control over financial reporting is effective, we could be subject to heightened regulatory scrutiny, investors could lose confidence in our reported financial information and the trading price of our common shares and our ability to maintain confidence in our business could be adversely affected.

Our substantial debt could adversely affect us, make us more vulnerable to adverse economic or industry conditions and prevent us from fulfilling our debt obligations.

We have a substantial amount of debt outstanding and significant debt service requirements. As of March 31, 2007, we had outstanding approximately $260.8 million of debt, including approximately $9.7 million of capital leases. We also had cross-currency and interest rate swaps with a balance sheet liability of $60.9 million as of March 31, 2007. These swaps are secured equally and ratably with our revolving credit facility. We also had $25.0 million of outstanding, undrawn letters of credit, which reduce the amount of available borrowings under our revolving credit facility. Our substantial indebtedness could have serious consequences, such as:

Index to Financial Statements

The potential consequences of our substantial indebtedness make us more vulnerable to defaults and place us at a competitive disadvantage. Further, if we do not have sufficient earnings to service our debt, we would need to refinance all or part of our existing debt, sell assets, borrow more money or sell securities, none of which we can guarantee we will be able to achieve on commercially reasonable terms, if at all.

The terms of our debt agreements may restrict our current and future operations, particularly our ability to respond to changes in our business or take certain actions.

Our revolving credit facility and the indenture governing our notes limit, among other things, our ability and the ability of our subsidiaries to:

Our revolving credit facility and some of our equipment lease programs also require us, and our future credit facilities may require us, to maintain specified financial ratios and satisfy specified financial tests, some of which become more restrictive over time. Our ability to meet these financial ratios and tests can be affected by events beyond our control, and we may be unable to meet those tests.

As a result of these covenants, our ability to respond to changes in business and economic conditions and to obtain additional financing, if needed, may be significantly restricted, and we may be prevented from engaging in transactions that might otherwise be considered beneficial to us. The breach of any of these covenants could result in an event of default under our revolving credit facility or any future credit facilities or under the indenture governing our notes. Under our revolving credit facility, our failure to pay certain amounts when due to other creditors, including to certain equipment lessors, or the acceleration of such other indebtedness, would also result in an event of default. Upon the occurrence of an event of default under our revolving credit facility or future credit facilities, the lenders could elect to stop lending to us or declare all amounts outstanding under such credit facilities to be immediately due and payable. Similarly, upon the occurrence of an event of default under the indenture governing our notes, the outstanding principal and accrued interest on the notes may become immediately due and payable. If amounts outstanding under such credit facilities and indenture were to be accelerated, or if we were not able to borrow under our revolving credit facility, we could become insolvent or be forced into insolvency proceedings and you could lose your investment in us.

Between March 31, 2004 and May 19, 2005, it was necessary to obtain a series of waivers and amend our then-existing credit agreement to avoid or to cure our default of various covenants contained in that credit

Index to Financial Statements

agreement. We ultimately replaced that credit agreement with a new credit agreement on May 19, 2005, which was amended and restated on July 19, 2006, which was subsequently amended and restated as of June 7, 2007.

Our inability to file the pre-amalgamated North American Energy Partners’ financial statements for the periods ended December 31, 2004, March 31, 2005 and September 30, 2005 with the SEC within the deadlines imposed by the regulators caused us to be out of compliance with the covenants in the indentures governing our 8³/4% senior notes and our 9% senior secured notes (the latter indenture having been subsequently repaid and terminated on November 28, 2006). In each case, we filed these financial statements before the lack of compliance became an event of default under the indentures.

We may not be able to generate sufficient cash flow to meet our debt service and other obligations due to events beyond our control.

For 2005, we had negative operating cash flow of $5.7 million. Our ability to generate sufficient operating cash flow to make scheduled payments on our indebtedness and meet other capital requirements will depend on our future operating and financial performance. Our future performance will be impacted by a range of economic, competitive and business factors that we cannot control, such as general economic and financial conditions in our industry or the economy generally.

A significant reduction in operating cash flows resulting from changes in economic conditions, increased competition, reduced work or other events could increase the need for additional or alternative sources of liquidity and could have a material adverse effect on our business, financial condition, results of operations, prospects and our ability to service our debt and other obligations. If we are unable to service our indebtedness, we will be forced to adopt an alternative strategy that may include actions such as selling assets, restructuring or refinancing our indebtedness, seeking additional equity capital or reducing capital expenditures. We may not be able to effect any of these alternative strategies on satisfactory terms, if at all, or they may not yield sufficient funds to make required payments on our indebtedness.

Currency rate fluctuations could adversely affect our ability to repay our 8³/4% senior notes and may affect the cost of goods we purchase.

We have entered into cross-currency and interest rate swaps that represent economic hedges of our 8³/4% senior notes, which are denominated in U.S. dollars. The current exchange rate between the Canadian and U.S. dollars as compared to the rate implicit in the swap agreement has resulted in a large liability on the balance sheet under the caption “derivative financial instruments.” If the Canadian dollar increases in value or remains at its current value against the U.S. dollar and we repay the 8³/4% senior notes prior to their maturity in 2011, we will have to pay this liability.

Exchange rate fluctuations may also cause the price of goods to increase or decrease for us. For example, a decrease in the value of the Canadian dollar compared to the U.S. dollar would proportionately increase the cost of equipment which is sold to us or priced in U.S. dollars. Between January 1, 2007 and May 31, 2007, the Canadian dollar/U.S. dollar exchange rate varied from a high of 1.1853 Canadian dollars per U.S. dollar to a low of 1.0701 Canadian dollars per U.S. dollar.

If we are unable to obtain surety bonds or letters of credit required by some of our customers, our business could be impaired.

We are at times required to post a bid or performance bond issued by a financial institution, known as a surety, to secure our performance commitments. The surety industry experiences periods of unsettled and volatile markets, usually in the aftermath of substantial loss exposures or corporate bankruptcies with significant surety exposure. Historically, these types of events have caused reinsurers and sureties to reevaluate their committed levels of underwriting and required returns. If for any reason, whether because of our financial condition, our

Index to Financial Statements

level of secured debt or general conditions in the surety bond market, our bonding capacity becomes insufficient to satisfy our future bonding requirements, our business and results of operations could be adversely affected.

Some of our customers require letters of credit to secure our performance commitments. Our second amended and restated revolving credit facility provides for revolving loans and the issuance of letters of credit up to $125.0 million. One of our major contracts allows the customer to require up to $50.0 million in letters of credit, and at March 31, 2007, we had provided $25.0 million in letters of credit in connection with this contract. If we were unable to provide letters of credit in the amount requested by this customer, we could lose business from such customer and our business and cash flow would be adversely affected. If our capacity to issue letters of credit under our revolving credit facility and our cash on hand are insufficient to satisfy our customers, our business and results of operations could be adversely affected.

A change in strategy by our customers to reduce outsourcing could adversely affect our results.

Outsourced mining and site preparation services constitute a large portion of the work we perform for our customers. For example, our mining and site preparation project revenues constituted approximately 74% to 75% of our revenues in each of the fiscal years ended March 31, 2005, 2006 and 2007. The election by one or more of our customers to perform some or all of these services themselves, rather than outsourcing the work to us, could have a material adverse impact on our business and results of operations.

Our operations are subject to weather-related factors that may cause delays in our project work.

Because our operations are located in western Canada and northern Ontario, we are often subject to extreme weather conditions. While our operations are not significantly affected by normal seasonal weather patterns, extreme weather, including heavy rain and snow, can cause delays in our project work, which could adversely impact our results of operations.

We are dependent on our ability to lease equipment, and a tightening of this form of credit could adversely affect our ability to bid for new work and/or supply some of our existing contracts.

A portion of our equipment fleet is currently leased from third parties. Further, we anticipate leasing substantial amounts of equipment to perform the work on contracts for which we have been engaged in the upcoming year, particularly the overburden removal contract with CNRL. Other future projects may require us to lease additional equipment. If equipment lessors are unable or unwilling to provide us with the equipment we need to perform our work, our results of operations will be materially adversely affected.

Our business is highly competitive and competitors may outbid us on major projects that are awarded based on bid proposals.

We compete with a broad range of companies in each of our markets. Many of these competitors are substantially larger than we are. In addition, we expect the anticipated growth in the oil sands region will attract new and sometimes larger competitors to enter the region and compete against us for projects. This increased competition may adversely affect our ability to be awarded new business.

Approximately 80% of the major projects that we pursue are awarded to us based on bid proposals, and projects are typically awarded based in large part on price. We often compete for these projects against companies that have substantially greater financial and other resources than we do and therefore can better bear the risk of underpricing projects. We also compete against smaller competitors that may have lower overhead cost structures and, therefore, may be able to provide their services at lower rates than we can. Our business may be adversely impacted to the extent that we are unable to successfully bid against these companies. The loss of existing customers to our competitors or the failure to win new projects could materially and adversely affect our business and results of operations.

Index to Financial Statements

A significant amount of our revenue is generated by providing non-recurring services.

More than 66% of our revenue for the year ended March 31, 2007 was derived from projects which we consider to be non-recurring. This revenue primarily relates to site preparation and piling services provided for the construction of extraction, upgrading and other oil sands mining infrastructure projects. Future revenues from these types of services will depend upon customers expanding existing mines and developing new projects.

Demand for our services may be adversely impacted by regulations affecting the energy industry.

Our principal customers are energy companies involved in the development of the oil sands and in natural gas production. The operations of these companies, including their mining operations in the oil sands, are subject to or impacted by a wide array of regulations in the jurisdictions where they operate, including those directly impacting mining activities and those indirectly affecting their businesses, such as applicable environmental laws. As a result of changes in regulations and laws relating to the energy production industry, including the operation of mines, our customers’ operations could be disrupted or curtailed by governmental authorities. The high cost of compliance with applicable regulations may cause customers to discontinue or limit their operations, and may discourage companies from continuing development activities. As a result, demand for our services could be substantially affected by regulations adversely impacting the energy industry.

Environmental laws and regulations may expose us to liability arising out of our operations or the operations of our customers.

Our operations are subject to numerous environmental protection laws and regulations that are complex and stringent. We regularly perform work in and around sensitive environmental areas such as rivers, lakes and forests. Significant fines and penalties may be imposed on us or our customers for non-compliance with environmental laws and regulations, and our contracts generally require us to indemnify our customers for environmental claims suffered by them as a result of our actions. In addition, some environmental laws impose strict, joint and several liability for investigative and remediation costs in relation to releases of harmful substances. These laws may impose liability without regard to negligence or fault. We also may be subject to claims alleging personal injury or property damage if we cause the release of, or any exposure to, harmful substances.

We own or lease, and operate, several properties that have been used for a number of years for the storage and maintenance of equipment and other industrial uses. Fuel may have been spilled, or hydrocarbons or other wastes may have been released on these properties. Any release of substances by us or by third parties who previously operated on these properties may be subject to laws which impose joint and several liability for clean-up, without regard to fault, on specific classes of persons who are considered to be responsible for the release of harmful substances into the environment.

Failure by our customers to obtain required permits and licenses may affect the demand for our services.

The development of the oil sands requires our customers to obtain regulatory and other permits and licenses from various governmental licensing bodies. Our customers may not be able to obtain all necessary permits and licenses that may be required for the development of the oil sands on their properties. In such a case, our customers’ projects will not proceed, thereby adversely impacting demand for our services.

Our projects expose us to potential professional liability, product liability, warranty or other claims.

We install deep foundations, often in congested and densely populated areas, and provide construction management services for significant projects. Notwithstanding the fact that we generally will not accept liability for consequential damages in our contracts, any catastrophic occurrence in excess of insurance limits at projects where our structures are installed or services are performed could result in significant professional liability, product liability, warranty or other claims against us. Such liabilities could potentially exceed our current

Index to Financial Statements

insurance coverage and the fees we derive from those services. A partially or completely uninsured claim, if successful and of a significant magnitude, could result in substantial losses.

We may not be able to achieve the expected benefits from any future acquisitions, which would adversely affect our financial condition and results of operations.

We intend to pursue selective acquisitions as a method of expanding our business. For example, in September 2006, we acquired Midwest Foundation Technologies Ltd. for $1.6 million. However, we may not be able to identify or successfully bid on businesses that we might find attractive. If we do find attractive acquisition opportunities, we might not be able to acquire these businesses at a reasonable price. If we do acquire other businesses, we might not be able to successfully integrate these businesses into our then-existing business. We might not be able to maintain the levels of operating efficiency that acquired companies will have achieved or might achieve separately. Successful integration of acquired operations will depend upon our ability to manage those operations and to eliminate redundant and excess costs. Because of difficulties in combining operations, we may not be able to achieve the cost savings and other size-related benefits that we hoped to achieve through these acquisitions. Any of these factors could harm our financial condition and results of operations.

Aboriginal peoples may make claims against our customers or their projects regarding the lands on which their projects are located.

Aboriginal peoples have claimed aboriginal title and rights to a substantial portion of western Canada. Any claims that may be asserted against our customers, if successful, could have an adverse effect on our customers which may, in turn, negatively impact our business.

Unanticipated short-term shutdowns of our customers’ operating facilities may result in temporary cessation or cancellation of projects in which we are participating.

The majority of our work is generated from the development, expansion and ongoing maintenance of oil sands mining, extraction and upgrading facilities. Unplanned shutdowns of these facilities due to events outside our control or the control of our customers, such as fires, mechanical breakdowns and technology failures, could lead to the temporary shutdown or complete cessation of projects in which we are working. When these events have happened in the past, our business has been adversely affected. Our ability to maintain revenues and margins may be affected to the extent these events cause reductions in the utilization of equipment.

Many of our senior officers have either recently joined the company or have just been promoted and have only worked together as a management team for a short period of time.

We recently made several significant changes to our senior management team. In May 2005, we hired a new Chief Executive Officer and promoted our Vice President, Operations to Chief Operating Officer. In January 2005 we hired a new Treasurer, who is now our Vice President, Supply Chain. In June 2006, we hired a new Vice President, Human Resources, Health, Safety and Environment. In September 2006, we hired a new Chief Financial Officer. Our Chief Operating Officer has resigned effective July 31, 2007, and our Vice President, Corporate resigned on March 31, 2006. We are actively searching for a new Chief Operating Officer. As a result of these and other recent changes in senior management, many of our officers have only worked together as a management team for a short period of time and do not have a long history with us. Because our senior management team is responsible for the management of our business and operations, failure to successfully integrate our senior management team could have an adverse impact on our business, financial condition and results of operations.

We incur significantly higher costs as a result of being a public company.

As a public company, we incur significantly higher legal, accounting and other expenses than we did as a private company. In addition, the Sarbanes-Oxley Act of 2002, as well as similar or related rules adopted by the

Index to Financial Statements

SEC, Canadian securities regulatory authorities, the New York Stock Exchange and the Toronto Stock Exchange, have imposed substantial requirements on public companies, including requiring changes in corporate governance practices and requirements relating to internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act. These rules and regulations increase our legal and financial compliance costs and make some activities more time-consuming and costly.

Fluctuations in the value of the Canadian and U.S. dollars can affect the value of our common shares and future dividends, if any.

Our operations and our principal executive offices are in Canada. Accordingly, we report our results in Canadian dollars. If you are a U.S. shareholder, the value of your investment in us will fluctuate as the U.S. dollar rises and falls against the Canadian dollar. Also, if we pay dividends in the future, we will pay those dividends in Canadian dollars. Accordingly, if the U.S. dollar rises in value relative to the Canadian dollar, the U.S. dollar value of the dividend payments received by a U.S. common shareholder would be less than they would have been if exchange rates were stable.

If our share price fluctuates after this offering, you could lose a significant part of your investment.

There has been significant volatility in the market price and trading volume of equity securities, which is unrelated to the financial performance of the companies issuing the securities. The market price of our common shares is likely to be similarly volatile, and you may not be able to resell your shares at or above the offering price due to fluctuations in the market price of our common shares, including changes in price caused by factors unrelated to our operating performance or prospects.

Specific factors that may have a significant effect on the market price for our common shares include:

Future sales, or the perception of future sales, of a substantial amount of our common shares may depress the price of our common shares.

Future sales, or the perception of the availability for sale, of substantial amounts of our common shares could adversely affect the prevailing market price of our common shares and could impair our ability to raise capital through future sales of equity securities at a time and price that we deem appropriate.

Index to Financial Statements

We, our executive officers and directors and the selling shareholders have agreed, subject to certain exceptions, that neither we nor they will offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, or file with the SEC or the securities regulatory authorities in Canada, a registration statement or prospectus under applicable securities legislation, relating to any of our common shares or securities convertible into or exchangeable or exercisable for any of our common shares, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing without the prior consent of Credit Suisse Securities (USA) LLC and UBS Securities LLC for 90 days after the date of this prospectus, subject under various circumstances to extension. See “Underwriting.” Following the expiration of this lock-up period, all of the common shares owned by our existing investors that will not be sold in this offering will be eligible for future sale pursuant to Rule 144 (in the case of sales in the United States), subject to the applicable volume, manner of sale, holding period and other limitations of that rule and pursuant to National Instrument 45-102, Resale of Securities (in the case of sales in Canada), subject to fulfilling the procedural requirements of that instrument. In addition, some of our existing shareholders have registration rights with respect to their common shares that they will retain following this offering. See “Shares Eligible for Future Sale” for a discussion of the common shares that may be sold into the public market in the future.

We may issue our common shares or convertible securities from time to time as consideration for future acquisitions and investments. In the event any such acquisition or investment is significant, the number of common shares or convertible securities that we may issue could be significant. We may also grant registration rights covering those shares or convertible securities in connection with any such acquisitions and investments. Any additional capital raised through the sale of our common shares or securities convertible into our common shares will dilute your percentage ownership in us.

We currently do not intend to pay cash dividends on our common shares, and our ability to pay dividends is limited by the indenture that governs our notes, our subsidiaries’ ability to distribute funds to us and Canadian law.

We have never paid cash dividends on our common shares. It is our present intention to retain all future earnings for use in our business, and we do not expect to pay cash dividends on the common shares in the foreseeable future. Any future determination to pay cash dividends will be at the discretion of our board of directors and will depend on our results of operations, financial condition, current and anticipated cash needs, contractual restrictions, restrictions imposed by applicable law and other factors that our board of directors considers relevant. Our ability to declare dividends is restricted by the terms of the indenture that governs our notes. See “Description of Certain Indebtedness.”

Substantially all of the assets shown on our consolidated balance sheet are held by our subsidiaries. Accordingly, our earnings and cash flow and our ability to pay dividends are largely dependent upon the earnings and cash flows of our subsidiaries and the distribution or other payment of such earnings to us in the form of dividends.

Our ability to pay dividends is also subject to the satisfaction of a statutory solvency test under Canadian law, which requires that there be no reasonable grounds for believing that (1) we are, or would after the payment be, unable to pay our liabilities as they become due or (2) the realizable value of our assets would, after payment of the dividend, be less than the aggregate of our liabilities and stated capital of all classes.

Our principal shareholders are in a position to affect our ongoing operations, corporate transactions and other matters, and their interests may conflict with or differ from your interests as a shareholder.

After the completion of this offering, we expect that the investment entities controlled by The Sterling Group, L.P., Genstar Capital, L.P., Perry Strategic Capital Inc. and SF Holding Corp., whom we collectively refer to as the sponsors, collectively will own approximately 35% of our common shares. As a result, the

Index to Financial Statements

sponsors and their affiliates will be able to exert influence over the outcome of most matters submitted to a vote of our shareholders, including the election of members of our board of directors, if they were to act together.

Regardless of whether the sponsors maintain a significant interest in our common shares, so long as a designated affiliate of each sponsor holds our common shares, such sponsor will have certain rights, including the right to obtain copies of financial data and other information regarding us, the right to consult with and advise our management and the right to visit and inspect any of our properties and facilities. See “Related Party Transactions—Information Rights Agreements.”

For so long as the sponsors own a significant percentage of our outstanding common shares, even if less than a majority, the sponsors will be able to exercise influence over our business and affairs, including the incurrence of indebtedness by us, the issuance of any additional common shares or other equity securities, the repurchase of common shares and the payment of dividends, if any, and will have the power to influence the outcome of matters submitted to a vote of our shareholders, including election of directors, mergers, consolidations, sales or dispositions of assets, other business combinations and amendments to our articles of incorporation. The interests of the sponsors and their affiliates may not coincide with the interests of our other shareholders. In particular, the sponsors and their affiliates are in the business of making investments in companies and they may, from time to time, acquire and hold interests in businesses that compete directly or indirectly with us. The sponsors and their affiliates may also pursue, for their own account, acquisition opportunities that may be complementary to our business, and as a result, those acquisition opportunities may not be available to us. So long as the sponsors and their affiliates continue to own a significant portion of the outstanding common shares, they will continue to be able to influence our decisions.

We are a holding company and rely on our subsidiaries for our operating funds, and our subsidiaries have no obligation to supply us with any funds.

We are a holding company with no operations of our own. We conduct our operations through subsidiaries and are dependent upon our subsidiaries for the funds we need to operate. Each of our subsidiaries is a distinct legal entity and has no obligation to transfer funds to us. The ability of our subsidiaries to transfer funds to us could be restricted by the terms of our financings. The payment of dividends to us by our subsidiaries is subject to legal restrictions as well as various business considerations and contractual provisions, which may restrict the payment of dividends and distributions and the transfer of assets to us.

You may be unable to enforce actions against us and some of our directors and officers and others named in this prospectus under U.S. federal securities laws.

We are a corporation incorporated under the Canada Business Corporations Act. Consequently, we are and will be governed by all applicable provincial and federal laws of Canada. Several of our directors and officers and others named in this prospectus reside principally in Canada. Because these persons are located outside the United States, it may not be possible for you to effect service of process within the United States upon those persons. Furthermore, it may not be possible for you to enforce against us or them, in or outside the United States, judgments obtained in U.S. courts, because substantially all of our assets and the assets of these persons are located outside the United States. We have been advised that there is doubt as to the enforceability, in original actions in Canadian courts, of liabilities based upon the U.S. federal securities laws and as to the enforceability in Canadian courts of judgments of U.S. courts obtained in actions based upon the civil liability provisions of the U.S. federal securities laws. Therefore, it may not be possible to enforce those actions against us, our directors and officers or other persons named in this prospectus.

Index to Financial Statements

This prospectus contains forward-looking statements within the meaning of the United States federal securities laws and securities legislation in the provinces and territories of Canada. Statements that are not historical facts, including statements about activities, events or developments that we or a third party expect, believe or anticipate will occur in the future, are forward-looking statements. Forward-looking statements include statements preceded by, followed by or that include the words “may,” “could,” “would,” “should,” “believe,” “expect,” “anticipate,” “plan,” “estimate,” “target,” “project,” “intend,” “continue,” “further” or similar expressions. These statements include, among others, statements regarding our expected business outlook, anticipated financial and operating results, our business strategy and means to implement the strategy, our objectives, the amount and timing of capital expenditures, the likelihood of our success in expanding our business, financing plans, budgets, working capital needs and sources of liquidity.

Forward-looking statements are only predictions and are not guarantees of performance. These statements are based on beliefs and assumptions, which in turn are based on currently available information. Important assumptions relating to the forward-looking statements include, among others, assumptions regarding demand for our services, the expansion of our business, the timing and cost of planned capital expenditures, competitive conditions and general economic conditions. These assumptions could prove inaccurate. Forward-looking statements also involve risks and uncertainties, which could cause actual results to differ materially from those contained in any forward-looking statement. Many of these risks and uncertainties are beyond our ability to control or predict and the occurrence of any such risk or uncertainty could be material. These factors include, but are not limited to, the following:

Index to Financial Statements

The foregoing list should not be construed to be exhaustive. We believe the forward-looking statements in this prospectus are reasonable; however, there is no assurance that the actions, events or results of the forward- looking statements will occur or, if any of them do, what impact they will have on our results of operations or financial condition. In view of these uncertainties, you should not place undue reliance on any forward-looking statements. Further, forward-looking statements speak only as of the date they are made, and, other than as required by applicable law, we undertake no obligation to update publicly any of them in light of new information or future events.

Index to Financial Statements

We will not receive any proceeds from the sale of shares by the selling shareholders.

Our common shares are listed and traded on the New York Stock Exchange and the Toronto Stock Exchange under the symbol “NOA.” Prior to November 22, 2006, no established public trading market for our common shares existed. The following table sets forth, for the periods indicated, the high and low sale prices per share, as reported on the New York Stock Exchange and the Toronto Stock Exchange.

On July 31, 2007, the last reported sale price of our common shares on the New York Stock Exchange was US$17.24 per share and on the Toronto Stock Exchange was C$18.35 per share.

We have not declared or paid any dividends on our common shares since our inception, and we do not anticipate declaring or paying any dividends on our common shares for the foreseeable future. We currently intend to retain any future earnings to finance future growth. Any future determination to pay dividends will be at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements and other factors the board of directors considers relevant. In addition, our ability to declare and pay dividends is restricted by our governing statute, as well as the terms of our revolving credit facility and the indenture that governs our notes. See “Description of Certain Indebtedness.”

Index to Financial Statements

The following table sets forth our cash and consolidated capitalization as of March 31, 2007 (unaudited).

Index to Financial Statements

The selected historical financial data presented below as of and for the fiscal year ended March 31, 2003 and for the period from April 1, 2003 to November 25, 2003 is derived from the audited consolidated financial statements of Norama Ltd., our predecessor. The selected historical financial data presented below for the period from November 26, 2003 to March 31, 2004 and as of and for each of the fiscal years ended March 31, 2005, 2006 and 2007 is derived from our audited consolidated financial statements. The financial data for the periods before November 26, 2003 is not necessarily comparable to the financial data for periods after November 25, 2003. The information presented below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our audited consolidated financial statements and related notes included elsewhere in this prospectus. All of the financial information presented below has been prepared in accordance with Canadian GAAP, which differs in certain significant respects from U.S. GAAP. For a discussion of the principal differences between Canadian GAAP and U.S. GAAP as they pertain to us, see note 27 to our consolidated financial statements included elsewhere in this prospectus.

Index to Financial Statements

No profit is recognized on claims until final settlement occurs. This can lead to a situation where costs are recognized in one period and revenue is recognized when customer agreement is obtained or claim resolution occurs, which can be in subsequent periods. Historical claim recoveries should not be considered indicative of future claim recoveries.

Claims revenue recognized was $14.5 million for the year ended March 31, 2007 (2006 – $12.9 million; 2005 – $nil), $8.4 million of which is included in unbilled revenue and remains uncollected at the end of the year (2005 – $nil). Of the amount included in unbilled revenue at March 31, 2007, $6.6 million was collected subsequent to year end.

Index to Financial Statements

gross proceeds of $12.6 million. Net proceeds from the over-allotment, after deducting underwriting fees and offering expenses, were $11.7 million. Total net proceeds from our initial public offering and subsequent over-allotment were $152.6 million.

The net proceeds from our initial public offering and subsequent over-allotment were used:

Index to Financial Statements

The cumulative effect of material differences between Canadian and U.S. GAAP on the consolidated shareholders’ equity is as follows:

Index to Financial Statements

Other long-term financial liabilities consist of derivative financial instruments and redeemable preferred shares.

Total long-term financial liabilities consists of total debt, excluding current portion, plus our redeemable shares and derivative financial instruments.

Index to Financial Statements

A reconciliation of net income (loss) to EBITDA and Consolidated EBITDA is as follows:

Index to Financial Statements

The following discussion should be read in conjunction with the financial statements and the notes thereto included elsewhere in this prospectus. The following discussion contains forward-looking statements, which reflect the expectations, beliefs, plans and objectives of management about future financial performance and assumptions underlying our judgments concerning the matters discussed below. See “Cautionary Note Regarding Forward-Looking Statements.” These statements, accordingly, involve estimates, assumptions, judgments and uncertainties. In particular, this pertains to management’s comments on financial resources, capital spending and the outlook for our business. Our actual results could differ materially from those discussed in the forward-looking statements. Factors that could cause or contribute to any differences include, but are not limited to, those discussed below and elsewhere in this prospectus, particularly in “Risk Factors.” Unless the context otherwise requires, references in the following discussion to “2007,” “2006” and “2005” mean the fiscal years ended March 31, 2007, 2006 and 2005, respectively.

With world economic growth continuing to positively impact oil demand and price, we expect to experience increasing project activity in our core market, the Canadian oil sands. Activity in the Fort McMurray area remains strong with a number of high-profile projects underway, including the CNRL expansion, Albian’s Jackpine Mine, Suncor’s Voyageur project and the planned Fort Hills project (a partnership between Petro-Canada Oil Sands, Inc., UTS Energy Corp., Teck Cominco Ltd. and Fort Hills Energy Corp.). Our 2007 acquisition of new equipment designed for heavy earth moving in the oil sands area has strengthened our ability to bid competitively in this market, and we have secured new contracts on a number of new projects.

In our Mining and Site Preparation segment, we are actively pursuing a strategy of strengthening our leading position as the preferred provider of mining and construction services in the Fort McMurray oil sands area, while concurrently expanding our business reach by bidding on Canadian opportunities in resource areas outside the oil sands. Our involvement with De Beers Canada at their Victor Diamond Mine project in northern Ontario is the first such project for us. We anticipate that the oil sands development and continued strong construction activity in western Canada will result in additional opportunities for our Piling business. The Kinder Morgan TMX project scheduled to commence construction in the summer of 2007 is another good opportunity for our Pipeline segment.

Assuming that we are able to avoid loss contracts, we believe our operating performance will continue to improve in 2008 as a result of the increasing market demand for our services and a number of internal initiatives undertaken or completed in 2007. These include the restructuring of our management team, the strengthening of our financial and operating controls and the implementation of a major business improvement project aimed at increasing productivity and equipment utilization.

Concurrently with the consummation of our initial public offering, NACG Holdings Inc., NACG Preferred Corp. and North American Energy Partners Inc. amalgamated into one entity, North American Energy Partners Inc. As a result, the amalgamated North American Energy Partners Inc. acquired all of the assets and assumed all of the liabilities and obligations of the three amalgamated entities. See “Business—Reorganization and Initial Public Offering.” Accordingly, our results of operations and financial condition before the amalgamation may not be comparable to our results of operations and financial condition after the amalgamation.

Index to Financial Statements

For the year ended March 31, 2007, our consolidated revenue increased to $629.4 million, from $492.2 million in 2006. While gains were achieved in all operating segments, the $137.2 million, or 27.9%, improvement was primarily due to increased project work in the Mining and Site Preparation segment, most notably at Albian’s Jackpine Mine.

Gross profit increased by 15.1% to $92.4 million in 2007, from $80.3 million in 2006 as a result of the increased revenue. As a percentage of revenue, gross profit declined to 14.7% in 2007, from 16.3% in 2006 resulting from losses on three pipeline projects. Gross profit was also reduced by a $3.6 million impairment charge recognized on a major piece of construction equipment and higher operating expenses. The increase in operating expenses reflects higher equipment, repair and maintenance, and shop overhead costs related to our fleet expansion, increased activity and escalating tire costs. Operating lease expense also increased in 2007, reflecting the addition of new leased equipment to support new projects, including the 10-year CNRL overburden removal project. The impact on gross profit as a percentage of revenue of higher operating costs and reduced Pipeline profitability was partially offset by improved project performance in the Mining and Site Preparation and Piling segments.

Operating income for 2007 increased to $51.1 million, from $49.4 million in 2006. This $1.7 million, or 3.4%, improvement was primarily due to the $12.1 million increase in gross profit discussed above, partially offset by a $8.9 million, or 28.7%, increase in general and administrative costs. The increase in general and administrative costs reflects increased employee costs related to our growing employee base, the payment of fees to the sponsors for termination of the advisory services agreement (see “Related Party Transactions—Advisory Services Agreement”) and higher professional fees for audit, legal and general consulting services. We recorded a loss of $1.0 million on the disposal of plant and equipment as a result of the sale and write-down of certain heavy equipment, compared to a gain of $0.7 million in 2006.

Index to Financial Statements

Consolidated 2006 revenue increased to $492.2 million from $357.3 million in 2005. This $134.9 million, or 37.8%, improvement was due to increased project work in the Mining and Site Preparation segment, as well as growth in our Piling division.

Gross profit in 2006 increased to $80.3 million from $36.2 million in 2005, and as a percentage of revenue, gross profit increased to 16.3%, from 10.1% in 2005. The increase in gross profit reflects improved project performance in the Mining and Site Preparation and Piling segments and the recognition of $12.9 million of revenue from claims and unapproved change orders in 2006 for which corresponding costs were recognized in 2005. These favorable impacts were partially offset by an increase in equipment costs, operating lease expense and depreciation. The increase in equipment costs and depreciation was primarily due to increased fleet size and activity levels, higher repair and maintenance costs caused by increased usage of larger equipment, increased cost of parts, primarily tires, and overhead and shop costs. The increase in operating lease expense for 2006 primarily relates to the addition of new leased equipment to support new projects, including the 10-year CNRL overburden removal project.

Operating income for 2006 increased to $49.4 million, from $9.4 million in 2005. This $40.0 million, or 424.1%, increase reflects the $44.1 million increase in gross profit discussed above, partially offset by higher general and administrative costs. General and administrative costs increased by $8.0 million, or 35.1%, as a result of increased professional fees relating to financing transactions in 2006, increased employee costs and higher bonuses. We also recorded a gain of $0.7 million on disposal of plant and equipment in 2006, compared to a loss of $0.5 million in 2005.

Segment profit is determined based on internal performance measures used to assess the performance of each business in a given period. Segment profit includes revenue earned from the performance of our projects, including amounts arising from change orders and claims, less all direct projects expenses, including direct labour, short-term equipment rentals, materials, payments to subcontractors, indirect job costs and internal charges for use of capital equipment.

Index to Financial Statements

Fiscal Year Ended Year Ended March 31, 2007 Compared to Fiscal Year Ended March 31, 2006

Mining and Site Preparation revenue increased 29.0% to $473.2 million in 2007, from $366.7 million in 2006. The growth in revenue was primarily due to higher oil sands activity relating to large site preparation projects at Albian’s Jackpine Mine and Birch Mountain Resources, combined with the continued ramp up on the CNRL overburden removal project and the De Beers Victor Mine project in northern Ontario.

Segment profit from our Mining and Site Preparation activities increased 40.1%, to $71.1 million, from $50.7 million in 2006, reflecting increased revenues. Segment profit in 2007 also benefited from the recognition of $12.7 million in claims revenue related to two large site preparation projects completed in 2006 and 2005. The corresponding costs of these projects were recognized in fiscal years 2006 and 2005.

Mining and Site Preparation revenue increased 38.5% to $366.7 million in 2006, from $264.8 million in 2005. This increase primarily reflects our involvement in large site preparation, underground utility installation and overburden removal at the CNRL oil sands project in Fort McMurray. We also provided significant mining services for Grande Cache Coal Corporation during the year. In addition, we recognized $12.9 million of revenue from claims and unapproved change orders for 2006 in which corresponding costs were recognized in previous years.

Mining and Site Preparation segment profit for 2006 increased 336.7% to $50.7 million, from $11.6 million in 2005, reflecting increased project activity, more efficient use of equipment and a loss incurred on a large steam-assisted gravity drainage site project in 2005. Our segment profit also benefited from claims revenue being recognized in 2006 for which corresponding costs were recognized in previous years.

Piling revenue increased 19.5% to $109.3 million, from $91.4 million in 2006. This increase was primarily due to strong economic conditions, which supported a higher volume of construction projects in the Fort McMurray and Calgary regions, and to a single large project in the Edmonton region.

Piling segment profit increased 52.3% to $34.4 million, from $22.6 million in 2006, resulting from increased volume and our execution of higher-margin projects.

Piling revenue increased 49.9% to $91.4 million, from $61.0 million in 2005. The increase was driven by a higher volume of projects in the Fort McMurray, Vancouver and Regina regions as a result of the strong economic environment and an increase in construction activities.

Piling segment profit increased 69.6% to $22.6 million, from $13.3 million in 2005, as a result of increased volumes and higher-margin work.

Pipeline revenue for 2007 increased 37.9% to $47.0 million, from $34.1 million in 2006, as a result of our involvement in three significant pipeline projects. The increase in 2007 revenue was partially offset by reduced work from EnCana.

Index to Financial Statements

Our Pipeline segment recorded a loss of $10.5 million in 2007, compared to a profit of $9.0 million in 2006. The 2007 result relates primarily to losses on three large pipeline projects, which were caused primarily by increased costs associated with increased scope and condition changes not recovered from our clients. We are currently working with our customers to come to a resolution on the amounts, if any, to be paid to us in respect of these costs.

Our Pipeline revenue increased 8.3% to $34.1 million, from $31.5 million in 2005, primarily as a result of increased work for EnCana and CNRL.

Pipeline profit increased 83.5% to $9.0 million, from $4.9 million in 2005, reflecting the combination of increased volume and higher-margin work during the 2006 period.

Total interest expense decreased by $31.5 million in 2007 compared to 2006, primarily due to the amendment to the terms of the pre-amalgamated North American Energy Partners Inc.’s mandatorily redeemable Series B preferred shares on March 30, 2006 as described in note 17(a) to our consolidated financial statements. Changes in the redemption value of the Series B preferred shares were charged to interest expense prior to the amendment date. In 2007, the accretion of redeemable preferred shares amounted to $2.5 million of interest expense, compared to $34.7 million in 2006 which related to both accretion and change in redemption value of mandatory redeemable preferred shares. In addition, as a result of the repurchase of the pre-amalgamated North American Energy Partners Inc.’s Series A preferred shares, $0.6 million of additional interest expense was recognized for 2007, in order to accrete up to the full redemption value of $1.0 million for these preferred shares. On November 28, 2006, each Series B preferred share was exchanged for 100 common shares of NACG Holdings Inc. On exchange, the carrying amount of the preferred shares, $44.7 million, was reclassified to common stock.

Substantially all of the $5.0 million foreign exchange gain recognized in 2007 relates to the exchange difference between the Canadian and U.S. dollar on conversion of the US$60.5 million of 9% senior secured notes (subsequently retired on November 28, 2006) and the US$200.0 million of 8³/4% senior notes.

We recorded a $0.2 million realized and unrealized gain on derivative financial instruments in 2007, compared to a $14.7 million realized and unrealized loss in 2006. We employ derivative financial instruments to

Index to Financial Statements

provide an economic hedge for our 8³/4% senior notes. The subsequent gain or loss reflects changes in the fair value of these derivatives. See “—Liquidity and Capital Resources—Liquidity Requirements” for further information regarding these derivative financial instruments.

We recognized a 2007 gain of $9.4 million on the repurchase of $27.0 million of the $35.0 million of NACG Preferred Corp. Series A preferred shares and related forfeited dividends of $1.4 million. Upon retiring the 9% senior secured notes, we recorded a loss of $10.9 million, which includes a $6.3 million loss on extinguishment of the notes, a $4.3 million write-off of deferred financing fees and related transaction costs of $0.3 million.

We recorded an income tax recovery of $2.6 million in 2007, compared to an income tax expense of $0.7 million for 2006. The effective rate is significantly lower than the statutory tax rate, primarily due to the impact of the enacted rate changes during the year, the reversal of the valuation allowance that existed at March 31, 2006 and the net impact of permanent differences relating to various income (charges) recognized for accounting purposes related to mandatorily redeemable shares and other financing transactions which were non-taxable. Income tax expense in the prior year primarily reflects the federal large corporation tax, which is a form of minimum tax, as a full valuation allowance was recorded against our net future tax asset given the uncertainty of recognizing the benefit of the net future tax asset at the end of 2006.

Our total interest expense increased by $37.6 million in 2006 compared to 2005, primarily due to interest charges of $34.7 million resulting from the issuance in May 2005 of the pre-amalgamated North American Energy Partners Inc.’s mandatorily redeemable Series B preferred shares and a $5.9 million increase in interest on long-term debt resulting from the issuance in May 2005 of the pre-amalgamated North American Energy Partners Inc.’s 9% senior secured notes. These increases in interest expense were partially offset by decreased interest expense resulting from the full repayment in May 2005 of the borrowings under the pre-amalgamated North American Energy Partners Inc.’s senior secured credit facility.

Substantially all of the $14.0 million foreign exchange gain recognized in 2006 relates to the exchange difference between the Canadian and U.S. dollar on conversion of the US$60.5 million of 9% senior secured notes and the US$200.0 million of 8³/4% senior notes. By comparison, our 2005 foreign exchange gain related only to the US$200.0 million of 8³/4% senior notes.

In 2006, we recorded a $14.7 million realized and unrealized loss on derivative financial instruments relating to the change in the fair value of these derivatives. By comparison, we recorded a realized and unrealized loss of $43.1 million on our derivative financial instruments in 2005. See “—Liquidity and Capital Resources—Liquidity Requirements” for further information regarding the derivative financial instruments.

We recognized a loss on extinguishment of debt of $2.1 million in 2006 as a result of $0.3 million of issue costs related to the pre-amalgamated North American Energy Partners Inc.’s Series A preferred shares and the write off of deferred financing fees of $1.8 million resulting from the May 2005 repayment of the pre-amalgamated North American Energy Partners Inc.’s senior secured credit facility.

We recorded an income tax expense of $0.7 million in 2006, compared to a net income tax recovery of $2.3 million in 2005. Income tax expense primarily reflects only the federal large corporation tax, which was a form of minimum tax, as a full valuation allowance was recorded against our net future tax asset given the uncertainty of recognizing the benefit of the net future tax asset at the end of 2006.

A number of factors contribute to variations in our quarterly results between periods, including weather, customer capital spending on large oil sands and natural gas related projects, our ability to manage our project

Index to Financial Statements

related business so as to avoid or minimize periods of relative inactivity and the strength of the western Canadian economy.

We generally experience a decline in revenues during the first quarter of each fiscal year due to seasonality, as weather conditions make operating during this period difficult. The level of activity in the Mining and Site Preparation and Pipeline segments declines when frost leaves the ground and many secondary roads are temporarily rendered incapable of supporting the weight of heavy equipment. The duration of this period is referred to as “spring breakup” and it has a direct impact on our activity levels. Revenues during the fourth quarter of each fiscal year are typically highest as ground conditions are most favourable in our operating regions. As a result, full-year results are not likely to be a direct multiple of any particular quarter or combination of quarters.

Three Months Ended March 31, 2007 Compared to Three Months Ended March 31, 2006

For the fourth quarter ended March 31, 2007, our consolidated revenue increased to $205.3 million, from $142.3 million in 2006. This $63.0 million, or 44.3%, increase was primarily due to increased project work at Albian’s Jackpine Mine in the Mining and Site Preparation segment, as well as growth in our Pipeline division.

Gross profit decreased by 56.9% to $13.6 million in 2007, from $31.7 million in 2006, as a result of project losses in the Pipeline segment, a $3.6 million asset impairment charge and higher equipment operating expenses. Equipment costs were driven by higher activity levels, significant increases in tire costs and increased shop labour and overhead. Operating lease expense decreased in the fourth quarter of 2007 due to the buyout of numerous leases as part of the proceeds from the IPO. As a result of the pipeline losses, asset impairment charge and higher equipment operating costs, gross profit as a percentage of revenue was 6.6% in 2007, compared to 22.3% in 2006.

Operating income for the fourth quarter ended March 31, 2007 decreased to $4.5 million, from $22.4 million in 2006. This $17.9 million, or 79.9%, decrease was due to the reduction in gross profit discussed above. General and administrative costs remained largely unchanged in the fourth quarter ended March 31, 2007 as increased stock compensation expense was offset by decreased employee costs.

Mining and Site Preparation revenue for the fourth quarter ended March 31, 2007 increased 48.9% to $150.1 million in 2007, from $100.9 million in 2006. The growth in revenue was primarily due to higher oil sands and mining activity relating to large site preparation projects at Albian, continued ramp up on the CNRL overburden removal project and increased project work at the De Beers Canada Victor Diamond Mine in northern Ontario.

Index to Financial Statements

Piling revenue for the fourth quarter ended March 31, 2007 increased 6.2% to $29.9 million, from $28.1 million in 2006. This increase was primarily due to higher volume of construction projects in the Fort McMurray region and a large project in the Edmonton region. Pipeline revenue increased 91.0% to $25.4 million, from $13.3 million in 2006, as a result of a large pipeline project for Suncor.

Segment profit from our Mining and Site Preparation activities decreased 0.6%, to $23.5 million, from $23.6 million in 2006. Increased revenues and a claim settlement related to a large site preparation project completed in fiscal 2006, was entirely offset by margin reductions on a large site preparation project in the fourth quarter of 2007. Challenging soil and water conditions on this project resulted in the recognition of $4.7 million in additional costs, with no associated revenue. We are actively negotiating change orders with the client relating to these changed conditions. Fourth quarter Piling segment profit increased 6.1% to $8.8 million in 2007, from $8.3 million in 2006, reflecting the impact of increased volume. Our Pipeline segment recorded a loss of $9.8 million for the fourth quarter ended March 31, 2007, compared to a profit of $3.9 million in 2006. This change in profitability reflects the negative impact of increased scope, condition changes and difficult weather conditions on a large pipeline project that resulted in $8.0 million of additional costs being recognized during the quarter without any associated revenue. We are in the process of requesting change orders from our customers to recover all or a portion of these additional costs, but did not meet the criteria to recognize this revenue for the fourth quarter ended March 31, 2007.

At March 31, 2007, we had net working capital (current assets less current liabilities) of $80.3 million, compared to $69.5 million at March 31, 2006. The increase in working capital resulted from an increase in accounts receivable and unbilled revenue as a result of increased projects in process, partially offset by a reduction of cash due to capital equipment purchases and an increase in borrowings from our secured credit facility.

Plant and equipment, net of depreciation, increased by $71.4 million from March 31, 2006 to March 31, 2007 primarily as a result of the acquisition of several large mining trucks and the buyout of certain leased equipment using the proceeds of the initial public offering.

Capital lease obligations, including the current portion, decreased by $1.2 million from March 31, 2006 to March 31, 2007 due to required repayments, the sale of a drill rig and repayment of the associated obligations, partially offset by the addition of new vehicles acquired by means of capital lease.

Total long-term financial liabilities are determined as non-current liabilities, excluding current portion of capital lease obligations and future income taxes. The decrease in 2007 is primarily as a result of the amalgamation and the initial public offering, as described in “Business—Reorganization and Initial Public Offering.”

Index to Financial Statements

Operating activities in 2007 resulted in a net increase in cash of $10.1 million, compared to an increase of $35.1 million in 2006 and a decrease of $5.7 million in 2005. The lower cash generated in 2007 compared to 2006 is the result of movements in net non-cash working capital from increased accounts receivable balances and tire purchases including deposits on tire purchases. The higher cash generated in 2006 compared to 2005 reflects improved earnings performance and the increased add back of non-cash items related to unrealized gains or losses on financial instruments and movements in future income taxes.

Sustaining capital expenditures are those that are required to keep our existing fleet of equipment at its optimal useful life through capital maintenance or replacement. Growth capital expenditures relate to equipment additions required to perform larger or a greater number of projects.

During 2007, we invested $7.6 million in sustaining capital expenditures (2006 – $7.4 million; 2005 – $7.5 million) and invested $102.4 million in growth capital expenditures (2006 – $21.5 million; 2005 – $17.3 million), for total capital expenditures of $110.0 million (2006 – $28.9 million; 2005 – $24.8 million). The significant increase in 2007 growth capital expenditures compared to the previous two years reflects the purchase of certain leased equipment for $44.6 million using a portion of the net proceeds of our initial public offering and the purchase of several large trucks to accommodate the increasing volume of available work.

Financing activities in 2007 resulted in a cash inflow of $63.0 million primarily provided by the $152.6 million of net proceeds of our initial public offering as described in the following paragraph, partially offset by the repayment of our 9% senior secured notes. Financing activities during 2006 resulted in net cash inflow of $13.2 million. This inflow reflects proceeds received from our May 19, 2005 issuance of the US$60.5 million of 9% senior secured notes and $7.5 million of Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. A portion of the proceeds from these issues was used to repay the amount outstanding under our senior secured credit facility at the time. Financing activities during 2005 resulted in a net cash inflow of $11.2 million, which related primarily to net borrowings under our revolving credit facility and repayment of capital lease obligations.

In connection with our initial public offering on November 28, 2006, we received net proceeds of $152.6 million (gross proceeds of $171.2 million, less underwriting discounts and commissions and offering expenses of $18.5 million). We used net proceeds from the offering to purchase certain equipment under operating leases for $44.6 million, to repurchase all of our outstanding 9% senior secured notes for $74.7 million plus accrued interest of $3.0 million, to repay the $27.0 million promissory note issued in respect of the repurchase of the NACG Preferred Corp. Series A preferred shares and to pay the $2.0 million fee to terminate the advisory services agreement with the sponsors.

Index to Financial Statements

Our primary uses of cash are for plant and equipment purchases, to fulfill debt repayment and interest payment obligations and to finance working capital requirements.

Our long-term debt includes US$200 million of 8³/4% senior notes due in 2011. The foreign currency risk relating to both the principal and interest payments on these senior notes has been managed with a cross-currency swap and interest rate swaps, which went into effect concurrent with the issuance of the notes on November 26, 2003. Interest totaling $13.0 million on the 8³/4% senior notes and the swap is payable semi-annually in June and December of each year until the notes mature on December 1, 2011. The swap agreements are an economic hedge, but have not been designated as a hedge for accounting purposes. There are no principal repayments required on the 8³/4% senior notes until maturity.

On November 28, 2006, we repurchased all of the outstanding 9% senior secured notes due in 2010 with a portion of the net proceeds from our initial public offering as described above.

One of our major customer contracts allows the customer to require that we provide up to $50 million in letters of credit. As at March 31, 2007, we had provided $25.0 million in letters of credit in connection with this contract. Any increase in the value of the letters of credit required by this customer must be requested by November 1, 2007 for an issue date of January 1, 2008.

We maintain a significant equipment and vehicle fleet comprised of units with various remaining useful lives. Once units reach the end of their useful lives, they are replaced as it becomes cost prohibitive to continue to maintain them. As a result, we are continually acquiring new equipment to replace retired units and to support growth as new projects are awarded to us. It is important to adequately maintain a large revenue-producing fleet in order to avoid equipment downtime which can impact our revenue stream and inhibit our ability to satisfactorily perform on our projects. In order to maintain a balance of owned and leased equipment, we have financed a portion of our large pieces of heavy construction equipment through operating leases. In addition, we continue to lease our motor vehicle fleet.

Our cash requirements during 2007 increased due to continued growth and additional operating and capital expenditures associated with new projects. Our cash requirements for fiscal 2008 include funding operating lease obligations, debt and interest repayment obligations and working capital.

We expect our sustaining capital expenditures to range from $35.0 million to $45.0 million per year over the next two years. We expect our total capital expenditures in fiscal 2008 to range from $75.0 million to $85.0 million. It is our belief that working capital will be sufficient to meet these requirements.

Our principal sources of cash are funds from operations and borrowings under our revolving credit facility. On June 7, 2007, our amended and restated revolving credit facility was modified to provide for borrowings of up to $125.0 million under which revolving loans and letters of credit may be issued. Our previous revolving credit facility was subject to borrowing base limitations, under which revolving loans and letters of credit up to a limit of $55.0 million could have been issued. As of March 31, 2007, we had approximately $9.5 million of available borrowings under the revolving credit facility after taking into account $20.5 million of borrowings and $25.0 million of outstanding and undrawn letters of credit to support performance guarantees associated with customer contracts. The indebtedness under the revolving credit facility is secured by a first priority lien on substantially all of our existing and after-acquired property.

Our revolving credit facility contains covenants that restrict our activities, including, but not limited to, incurring additional debt, transferring or selling assets and making investments, including acquisitions. Under the

Index to Financial Statements

revolving credit facility, Consolidated Capital Expenditures (as defined in the credit agreement) during any applicable period cannot exceed 120% of the amount in the capital expenditure plan. In addition, we are also required to satisfy certain financial covenants, including a minimum interest coverage ratio and a maximum senior leverage ratio, both of which are calculated using Consolidated EBITDA, as well as a minimum current ratio.

Consolidated EBITDA is defined in the credit facility as the sum, without duplication, of (1) consolidated net income, (2) consolidated interest expense, (3) provisions for taxes based on income, (4) total depreciation expense, (5) total amortization expense, (6) costs and expenses incurred by us in entering into the credit facility, (7) accrual of stock-based compensation expense to the extent not paid in cash or if satisfied by the issue of new equity, and (8) other non-cash items (other than any such non-cash item to the extent it represents an accrual of or reserve for cash expenditures in any future period), but only, in the case of clauses (2)-(8), to the extent deducted in the calculation of consolidated net income, less other non-cash items added in the calculation of consolidated net income (other than any such non-cash item to the extent it will result in the receipt of cash payments in any future period), all of the foregoing as determined on a consolidated basis in conformity with Canadian GAAP.

Interest coverage is determined based on a ratio of Consolidated EBITDA to consolidated cash interest expense, and the senior leverage is determined as a ratio of senior debt to Consolidated EBITDA. Measured as of the last day of each fiscal quarter on a trailing four-quarter basis, Consolidated EBITDA shall not be less than 2.5 times consolidated cash interest expense (2.35 times at June 30, 2007). Also, measured as of the last day of each fiscal quarter on a trailing four-quarter basis, senior leverage shall not exceed 2.0 times Consolidated EBITDA. We believe Consolidated EBITDA as defined in the credit facility is an important measure of our liquidity.

Backlog is a measure of the amount of secured work we have outstanding and as such is an indicator of future revenue potential. Backlog is not a GAAP measure and as a result, the definition and determination will vary among different organizations ascribing a value to backlog. Although backlog reflects business that we consider to be firm, cancellations or reductions may occur and may reduce backlog and future income. We did not measure this amount before fiscal 2007.

We define backlog as that work that has a high certainty of being performed as evidenced by the existence of a signed contract or work order specifying job scope, value and timing. We have also set a policy that our definition of backlog will be limited to contracts or work orders with values exceeding $500,000 and work that will be performed in the next five years, even if the related contracts extend beyond five years.

We work with our customers using cost-plus, time-and-materials, unit-price and lump-sum contracts, and the mix of contract types varies year-by-year. For 2007, our contract revenue consisted of 6% cost-plus, 28% time-and-materials, 53% unit-price and 13% lump-sum. Our definition of backlog results in the exclusion of cost-plus and time-and-materials contracts performed under master service agreements. While contracts exist for a range of services to be provided, the work scope and value are not clearly defined under those contracts. For 2007, the total amount of all cost-plus and time-and-materials based revenue was $220.9 million (34% of total revenues).

Index to Financial Statements

A contract with a single customer represented approximately $680 million of the March 31, 2007 backlog. It is expected that approximately $255 million of the backlog will be performed and realized in fiscal 2008.

Due to the complexity of the projects we undertake, changes often occur after work has commenced. These changes include, but are not limited to:

Contract change management processes require that we prepare and submit change orders to the client requesting approval of scope and/or price adjustments to the contract. Accounting guidelines require that management consider changes in cost estimates that have occurred up to the release of the financial statements and reflect the impact of these changes in the financial statements. Conversely, potential revenue associated with increases in cost estimates is not included in financial statements until an agreement is reached with the client or specific criteria for the recognition of revenue from unapproved change orders and claims are met. This can, and often does, lead to costs being recognized in one period and revenue being recognized in subsequent periods.

Occasionally, disagreements arise regarding changes, their nature, measurement, timing and other characteristics that impact costs and revenue under the contract. If a change becomes a point of dispute between our customer and us, we then consider it as a claim. Historical claim recoveries should not be considered indicative of future claim recoveries.

As a result of changed conditions discussed above, we have recognized $18 million in additional contract costs from a number of contracts for the year ended March 31, 2007, with no associated increase in contract value. We are working with our customers to come to resolution on the amounts, if any, to be paid to us in respect to these additional costs.

Some of our directors, officers, employees and service providers have been granted options to purchase common shares under the Amended and Restated 2004 Share Option Plan. In June and September 2006, we granted 127,760 and 187,760 options, respectively, with an exercise price of $5.00 and $16.75 per share, respectively. In September 2006, we had a valuation performed by an unrelated valuation specialist, which valued our common shares at $16.10 per share. The plan and outstanding balances are disclosed in note 25 to our consolidated financial statements.

In accordance with Canadian Institute of Chartered Accountants’ Handbook Section 3062, “Goodwill and Other Intangible Assets,” we review our goodwill for impairment annually or whenever events or changes in circumstances suggest that the carrying amount may not be recoverable. We are required to test our goodwill for impairment at the reporting unit level and we have determined that we have three reporting units. The test for goodwill impairment is a two-step process:

Index to Financial Statements

We completed Step 1 of this test during the quarter ended December 31, 2006 and were not required to record an impairment loss on goodwill. We conduct our annual assessment of goodwill in December of each year.

In the course of preparing our fiscal 2007 financial statements, we identified a number of material weaknesses in our internal control over financial reporting. A control deficiency is a material weakness in internal control over financial reporting if the deficiency, or a combination of control deficiencies, is such that there is a reasonable possibility a material misstatement of our consolidated financial statements will not be prevented or detected.

We noted the following material weaknesses in internal control over financial reporting as at March 31, 2007:

In anticipation of providing an annual report on internal control over financial reporting as of March 31, 2008, management is currently evaluating the effectiveness of our system of internal control over financial reporting based on the framework in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have begun addressing these deficiencies through the implementation of the requirements of Section 404 of the Sarbanes-Oxley Act of 2002 in the United States and Multilateral Instrument 52-109 in Canada. We are in the remediation phase of a procurement project in which we implemented the purchase order functionality in our financial systems and trained our staff in the effective use of purchase orders to track our commitments and to record our expenses in a timely manner. We are implementing and testing a project controls improvement initiative over the claims and unapproved change orders process, as well as the completeness and accuracy of project forecasts. We are also in the final stages of upgrading our enterprise resource management software, which includes addressing the ITGC deficiencies noted above.

We have added to our finance staff, and in particular we now have in-house Canadian GAAP expertise and a working knowledge of U.S. GAAP, which is supplemented by outside expertise. We have created a Corporate

Index to Financial Statements

Controller position and added a Corporate Accounting Manager and Tax Manager. In addition, we have instituted standardized procedures for financial reporting and review, including the procedures by which general ledger transactions are closed, reviewed and consolidated.

Our target is to complete the above changes by March 31, 2008, the date as of which we will be required to provide management’s report on the effectiveness of internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act of 2002. Because most of the costs of implementing the above changes to internal control over financial reporting have been incurred in anticipation of providing such report or due to required systems upgrades, we have not incurred and do not expect to incur material costs in connection with implementing corrective actions to correct identified internal control deficiencies.

Certain accounting policies require management to make significant estimates and assumptions about future events that affect the amounts reported in our financial statements and the accompanying notes. Therefore, the determination of estimates requires the exercise of management’s judgment. Actual results could differ from those estimates, and any differences may be material to our financial statements.

Our contracts with customers fall under the following contract types: cost-plus, time-and-materials, unit-price and lump-sum. While contracts are generally less than one year in duration, we do have several long-term contracts. The mix of contract types varies year-by-year. For the year ended March 31, 2007, our contracts consisted of 6% cost-plus, 28% time-and-materials, 53% unit-price and 13% lump-sum.

Profit for each type of contract is included in revenue when its realization is reasonably assured. Estimated contract losses are recognized in full when determined. Claims and unapproved change orders are included in total estimated contract revenue, only to the extent that contract costs related to the claim or unapproved change order have been incurred, when it is probable that the claim or unapproved change order will result in a bona fide addition to contract value and the amount of revenue can be reliably estimated.

The accuracy of our revenue and profit recognition in a given period is dependent, in part, on the accuracy of our estimates of the cost to complete each unit-price and lump-sum project. Our cost estimates use a detailed “bottom up” approach. We believe our experience allows us to produce materially reliable estimates. However, our projects can be highly complex, and in almost every case, the profit margin estimates for a project will either increase or decrease to some extent from the amount that was originally estimated at the time of the related bid. Because we have many projects of varying levels of complexity and size in process at any given time, these changes in estimates can offset each other without materially impacting our profitability. However, sizable changes in cost estimates, particularly in larger, more complex projects, can have a significant effect on profitability.

Factors that can contribute to changes in estimates of contract cost and profitability include, without limitation:

The foregoing factors, as well as the stage of completion of contracts in process and the mix of contracts at different margins, may cause fluctuations in gross profit between periods, and these fluctuations may be significant.

Index to Financial Statements

The most significant estimate in accounting for plant and equipment is the expected useful life of the asset and the expected residual value. Most of our property, plant and equipment have long lives which can exceed 20 years with proper repair work and preventative maintenance. Useful life is measured in operated hours, excluding idle hours, and a depreciation rate is calculated for each type of unit. Depreciation expense is determined monthly based on daily actual operating hours.

Another key estimate is the expected cash flows from the use of an asset and the expected disposal proceeds in applying Canadian Institute of Chartered Accountants Handbook Section 3063, “Impairment of Long-Lived Assets” and Section 3475, “Disposal of Long-Lived Assets and Discontinued Operations.” These standards require the recognition of an impairment loss for a long-lived asset when changes in circumstances cause its carrying value to exceed the total undiscounted cash flows expected from its use. An impairment loss, if any, is determined as the excess of the carrying value of the asset over its fair value.

Impairment is tested at the reporting unit level by comparing the reporting unit’s carrying amount to its fair value. The process of determining fair values is subjective and requires us to exercise judgment in making assumptions about future results, including revenue and cash flow projections at the reporting unit level, and discount rates.

Our derivative financial instruments are not designated as hedges for accounting purposes and are recorded on the balance sheet at fair value, which is determined based on values quoted by the counterparties to the agreements. The primary factors affecting fair value are the changes in the interest rate term structures in the United States and Canada, the life of the swap and the CAD/USD foreign exchange spot rate.

In November 2005, the CICA issued Emerging Issues Committee Abstract No. 159, “Conditional Asset Retirement Obligations” (“EIC-159”) to clarify the accounting treatment for a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. Under EIC-159, an entity is required to recognize a liability for the fair value of a conditional asset retirement obligation if the obligation can be reasonably estimated. The guidance is effective April 1, 2006, although early adoption is permitted and is to be applied retroactively, with restatement of prior periods. We adopted this standard in fiscal 2006, and the adoption did not have a material impact on our consolidated financial statements.

Stock-based compensation for employees eligible to retire before the vesting date

In July 2006, the CICA Emerging Issues Committee issued Abstract No. 162, ‘‘Stock-Based Compensation for Employees Eligible to Retire Before the Vesting Date’’ (‘‘EIC-162’’). EIC-162 requires that the compensation cost attributable to awards granted to employees eligible to retire at the grant date should be recognized on the grant date if the award’s exercisability does not depend on continued service. Additionally, awards granted to employees who will become eligible to retire during the vesting period should be recognized over the period from the grant date to the date the employee becomes eligible to retire. We adopted this standard for the interim period ended December 31, 2006 retroactively, with restatement of prior periods for all stock-based compensation awards. The adoption of this standard had no impact on our consolidated financial statements.

Index to Financial Statements

In September 2006, the CICA issued Emerging Issues Committee Abstract No. 163, “Determining the Variability to be Considered in Applying AcG-15” (“EIC-163”). This guidance provides additional clarification on how to analyze and consolidate a VIE. EIC-163 concludes that the “by-design” approach should be the method used to assess variability (that is created by risks the entity is designed to create and pass along to its interest holders) when applying the VIE standards. The “by-design” approach focuses on the substance of the risks created over the form of the relationship. The guidance may be applied to all entities (including newly created entities) with which an enterprise first becomes involved and to all entities previously required to be analyzed under the VIE standards when a reconsideration event has occurred and is effective for interim and annual periods beginning on or after January 1, 2007. The adoption of this standard did not have a material impact on our consolidated financial statements.

In January 2005, the CICA issued Handbook Section 3855, “Financial Instruments—Recognition and Measurement,” Handbook Section 1530, “Comprehensive Income,” and Handbook Section 3865, “Hedges.” The new standards are effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2006, specifically April 1, 2007 for us. The new standards will require presentation of a separate statement of comprehensive income under specific circumstances. Foreign exchange gains and losses on the translation of the financial statements of self-sustaining subsidiaries previously recorded in a separate section of shareholder’s equity will be presented in comprehensive income. Derivative financial instruments will be recorded in the balance sheet at fair value and the changes in fair value of derivatives designated as cash flow hedges will be reported in comprehensive income. We are currently assessing the impact of the new standards.

Effective April 1, 2007, we will also be required to adopt CICA Handbook Section 3861, “Financial Instruments—Disclosure and Presentation” (“CICA 3861”), which requires entities to provide disclosures in their financial statements that enable users to evaluate: (1) the significance of financial instruments on the entity’s financial performance; and (2) the nature and extent of risks arising from the use of financial instruments by the entity during the period and at the balance sheet date, and how the entity manages those risks. We are currently assessing the impact of this standard.

In March 2007, the CICA issued Handbook Section 3862, “Financial Instruments—Disclosures,” which replaces CICA 3861 and provides expanded disclosure requirements that provide additional detail by financial assets and liability categories. This standard harmonizes disclosures with International Financial Reporting Standards. The standard applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for us. We are currently evaluating the impact of this standard.

In March 2007, the CICA issued Handbook Section 3863, “Financial Instruments—Presentation,” to enhance financial statement users’ understanding of the significance of financial instruments to an entity’s financial position, performance and cash flows. This Section establishes standards for presentation of financial instruments and non-financial derivatives. It deals with the classification of financial instruments, from the perspective of the issuer, between liabilities and equity, the classification of related interest, dividends, gains and losses, and the circumstances in which financial assets and financial liabilities are offset. This standard harmonizes disclosures with International Financial Reporting Standards and applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for us. We are currently evaluating the impact of this standard.

Effective April 1, 2007, we will adopt CICA Handbook Section 3251, “Equity,” which establishes standards for the presentation of equity and changes in equity during the reporting period. The requirements in this section

Index to Financial Statements

are in addition to those of CICA Handbook Section 1530 and recommend that an enterprise should present separately the following components of equity: retained earnings, accumulated other comprehensive income, and the total for retained earnings and accumulated other comprehensive income, contributed surplus, share capital and reserves. We are currently evaluating the impact of this standard.

In July 2006, the CICA revised Handbook Section 1506, “Accounting Changes,” which requires that: (1) voluntary changes in accounting policy are made only if they result in the financial statements providing reliable and more relevant information; (2) changes in accounting policy are generally applied retrospectively; and (3) prior period errors are corrected retrospectively. This revised standard is effective for fiscal years beginning on or after January 1, 2007, specifically April 1, 2007 for us, and is not expected to have a material impact on our consolidated financial statements.

In December 2006, the CICA issued Handbook Section 1535, “Capital Disclosures.” This standard requires that an entity disclose information that enables users of its financial statements to evaluate an entity’s objectives, policies and processes for managing capital, including disclosures of any externally imposed capital requirements and the consequences of non-compliance. The new standard applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for us. We are currently evaluating the impact of this standard.

In June 2007, the CICA issued Handbook Section 3031, “Inventories,” to harmonize accounting for inventories under Canadian GAAP with International Financial Reporting Standards. This standard requires the measurement of inventories at the lower of cost and net realizable value and includes guidance on the determination of cost, including allocation of overheads and other costs to inventory. The standard also requires the consistent use of either first-in, first out (FIFO) or weighted average cost formula to measure the cost of other inventories and requires the reversal of previous write-downs to net realizable value when there is a subsequent increase in the value of inventories. The new standard applies to interim and annual financial statements relating to fiscal years beginning on or after January 1, 2008, specifically April 1, 2008 for us. We are currently evaluating the impact of this standard.

Our consolidated financial statements have been prepared in accordance with Canadian GAAP, which differs in certain material respects from U.S. GAAP. The nature and effect of these differences are set out in note 27 to our consolidated financial statements.

Statement of Financial Accounting Standards No. 123R, “Share-Based Payment” (“SFAS 123R”) requires companies to recognize in the income statement, the grant-date fair value of stock options and other equity-based compensation issued to employees. The fair value of liability-classified awards is remeasured subsequently at each reporting date through the settlement date, while the fair value of equity-classified awards is not subsequently remeasured. The revised standard is effective for non-public companies beginning with the first annual reporting period that begins after December 15, 2005, which in our case is the period beginning April 1, 2006. We have used the fair value method under Statement 123 since its inception. We adopted SFAS 123R prospectively since we use the minimum value method for purposes of complying with Statement 123. The adoption of this standard did not have a material impact on our consolidated financial statements.

Index to Financial Statements

In May 2005, the FASB issued Statement of Financial Accounting Standards No. 154, “Accounting Changes and Error Corrections” (“SFAS 154”), which replaces Accounting Principles Board Opinion No. 20, “Accounting Changes,” and Statement of Financial Accounting Standards No. 3, “Reporting Accounting Changes in Interim Financial Statements—An Amendment of APB Opinion No. 28.” SFAS 154 provides guidance on the accounting for and reporting of accounting changes and error corrections. It establishes retrospective application, or the latest practicable date, as the required method for reporting a change in accounting principle and the reporting of a correction of an error. SFAS 154 was effective for us for accounting changes and corrections of errors made by us in our fiscal year beginning on April 1, 2006. The adoption of this standard did not have a material impact on our consolidated financial statements.

In September 2006, the SEC issued Staff Accounting Bulletin No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” (“SAB 108”). SAB 108 provides interpretive guidance on how the effects of the carryover or reversal of prior year misstatements should be considered in quantifying a current year misstatement. It establishes an approach that requires quantification of financial statements misstatements based on the effects of the misstatements on each of our financial statements and the related financial statement disclosures. SAB 108 was effective for our annual financial statements for the fiscal year ending March 31, 2007. The adoption of this standard did not have a material impact on our consolidated financial statements.

Statement of Financial Accounting Standards No. 155, “Accounting for Certain Hybrid Financial Instruments—an amendment of FASB Statements No. 133 and 140” (“SFAS 155”) was issued February 2006. This statement is effective for all financial instruments acquired, issued, or subject to a remeasurement (new basis) event occurring after the beginning of an entity’s first fiscal year that begins after September 15, 2006. The fair value election provided for in paragraph 4(c) of this statement may also be applied upon adoption of this statement for hybrid financial instruments that had been bifurcated under paragraph 12 of Statement 133 prior to the adoption of this statement. This states that an entity that initially recognizes a host contract and a derivative instrument may irrevocably elect to initially and subsequently measure that hybrid financial instrument, in its entirety, at fair value with changes in fair value recognized in earnings. SFAS 155 is applicable for all financial instruments acquired or issued in our 2008 fiscal year although early adoption is permitted. We are currently reviewing the impact of this statement.

In June 2006, the FASB issued Interpretation No. 48, “Accounting for Uncertainty in Income Taxes—An Interpretation of FASB Statement No. 109” (“FIN 48”) which clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes.” FIN 48 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. This Interpretation also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition requirements. FIN 48 is effective for our 2008 fiscal year. We are currently reviewing the impact of this Interpretation.

In May 2007, the FASB issued FASB Staff Position No. FIN 48-1, “Definition of Settlement in FASB Interpretation No. 48,” which provides guidance on how an enterprise should determine whether a tax position is effectively settled for the purpose of recognizing previously unrecognized tax benefits. This FASB Staff Position is effective upon the initial adoption of FIN 48, and we are currently reviewing the impact of this guidance.

Index to Financial Statements

statement does not expand the use of fair value measurements in any new circumstances. Under this statement, fair value refers to the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the market in which the entity transacts. SFAS 157 is effective for us for fair value measurements and disclosures made by us in our fiscal year beginning on April 1, 2008. We are currently reviewing the impact of this statement.

Statement of Financial Accounting Standards No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities” (“SFAS 159”) was issued in February 2007. The statement permits entities to choose to measure many financial instruments and certain other items at fair value, providing the opportunity to mitigate volatility in reported earnings caused by measuring related assets and liabilities differently without the need to apply hedge accounting provisions. SFAS 159 is effective for fiscal years beginning after November 15, 2007, specifically April 1, 2008 for us, with earlier adoption permitted. We are currently reviewing the impact of this pronouncement.

Our principal contractual obligations relate to our long-term debt and capital and operating leases. The following table summarizes our future contractual obligations, excluding interest payments unless otherwise noted, as of March 31, 2007.

We are subject to currency exchange risk as our 8³/4% senior notes are denominated in U.S. dollars and all of our revenues and most of our expenses are denominated in Canadian dollars. To manage the foreign currency risk and potential cash flow impact on our $200 million in U.S. dollar-denominated notes, we have entered into currency swap and interest rate swap agreements. These financial instruments consist of three components: a U.S. dollar interest rate swap; a U.S. dollar-Canadian dollar cross-currency basis swap; and a Canadian dollar interest rate swap. The cross-currency and interest rate swap agreements can be cancelled at the counterparty’s option at any time after December 1, 2007 if the counterparty pays a cancellation premium. The premium is equal to 4.375% of the US$200 million if exercised between December 1, 2007 and December 1, 2008; 2.1875% if exercised between December 1, 2008 and December 1, 2009; and repurchased at par if cancelled after December 1, 2009.

Index to Financial Statements

We are exposed to interest rate risk on the revolving credit facility, capital lease obligations and certain operating leases with a variable payment that is tied to prime rates. We do not use derivative financial instruments to reduce our exposure to these risks. The estimated financial impact as a result of fluctuations in interest rates is not significant.

Inflation has not had a material impact on our operations as many of our contracts contain a provision for annual price increases. Inflation is not expected to have a material impact on our operations in the foreseeable future provided the rate of inflation remains consistent with recent levels and we are able to continue passing cost increases along to our customers.

Index to Financial Statements

Our core market is the oil sands, where we generated 72% of our fiscal 2007 revenue. The oil sands are located in three regions of northern Alberta: Athabasca, Cold Lake and Peace River. According to the Alberta Energy and Utilities Board, or EUB, Canada’s oil sands are estimated to hold 315 billion barrels of ultimately recoverable oil reserves, with established reserves of almost 173 billion barrels as of the end of 2006, second only to Saudi Arabia. According to the Canadian Association of Petroleum Producers, or CAPP, oil sands production of bitumen is expected to increase from 1.1 million barrels per day, or “bpd,” in 2006 to approximately 3.0 million bpd by 2015 and account for 71% of total Canadian oil output, compared to 43% of output today. In order to achieve this increase in production, the Canadian National Energy Board, or NEB, estimates that approximately $95 billion of capital expenditures by companies operating in the oil sands will be required over the period 2006 to 2015.

Our significant knowledge, experience, equipment capacity and scale of operations in the oil sands differentiates us from our competition. Our principal customers are the major operators in the oil sands, including all three of the producers that currently mine bitumen, being Syncrude Canada Ltd., Suncor Energy Inc. and Albian Sands Energy Inc. (a joint venture among Shell Canada Limited, Chevron Canada Limited and Western Oil Sands Inc.). Canadian Natural Resources Limited, or CNRL, another significant customer, is developing a bitumen-mining project in the oil sands. We provide services to every company in the oil sands that uses surface mining techniques for its production. These surface mining techniques account for over 70% of total oil sands production. We also provide site construction services for in-situ producers, which use horizontally drilled wells to inject steam into deposits and pump bitumen to the surface.

We have long-term relationships with most of our customers. For example, we have been providing services to Syncrude Canada Ltd. and Suncor Energy Inc. since they pioneered oil sands development over 30 years ago. We believe our customers’ leases have an average remaining productive life of over 35 years. In addition, 34% of our revenues in fiscal 2007 were derived from recurring, long-term contracts, which assists in providing stability in our operations.

Index to Financial Statements

We were formed in October 2003 in connection with the Acquisition. On October 31, 2003, two of our wholly-owned subsidiaries, as the buyers, entered into a purchase and sale agreement with Norama Ltd. and one of its subsidiaries, as the sellers. On November 26, 2003, pursuant to the purchase and sale agreement, Norama Ltd. sold to the buyers the businesses comprising North American Construction Group in exchange for total consideration of approximately $405.5 million, net of cash received and including the impact of certain post-closing adjustments. The businesses we acquired from Norama Ltd. have been in operation since 1953. Prior to the Acquisition, we had no operations or significant assets, and the Acquisition was primarily a change of ownership of the businesses acquired. Subsequent to the Acquisition, we have operated the businesses in substantially the same manner as prior to the Acquisition.

Index to Financial Statements

On November 28, 2006, prior to the amalgamation, the following transactions took place:

On November 28, 2006, we completed our initial public offering in the United States and Canada of 8,750,000 voting common shares for $18.38 per share (U.S. $16.00 per share). On November 22, 2006, our common shares commenced trading on the New York Stock Exchange and on an “if, as and when issued” basis on the Toronto Stock Exchange. On November 28, 2006, our common shares became fully tradable on the Toronto Stock Exchange. Net proceeds from the initial public offering were $140.9 million (gross proceeds of $158.5 million, less underwriting discounts and costs and offering expenses of $17.6 million). In addition, on December 6, 2006, the underwriters exercised their option to purchase an additional 687,500 common shares from us. The net proceeds from the exercise of the underwriters’ option were $11.7 million (gross proceeds of $12.6 million, less underwriting fees of $0.9 million). Total net proceeds were $152.6 million (total gross proceeds of $171.1 million less total underwriting discounts and costs and offering expenses of $18.5 million).

Index to Financial Statements

We are the largest provider of contract mining services in the oil sands area, and we believe we are the largest piling foundations installer in western Canada. We have operated in western Canada for over 50 years and have participated in every significant oil sands mining project since operators first began working in the oil sands over 30 years ago. We believe we operate the largest fleet of any contract resource services provider in the oil sands. We are one of only a few companies capable of taking on long-term, large-scale projects with the major operators in the oil sands. In addition, we have extensive experience operating in the challenging working conditions created by the harsh climate and difficult terrain of the oil sands and northern Canada. We believe the combination of our significant size, extensive experience and broad service offerings has allowed us to develop our leading market position and reputation as the service provider of choice in the oil sands. For example, we have recently been selected by CNRL to provide substantial services under several contracts, including a 10-year overburden removal contract.

Large, well-maintained equipment fleet strategically located in the Canadian oil sands

As of March 31, 2007, we had a heavy equipment fleet of over 370 units located in the oil sands, made up of shovels, excavators, trucks and dozers. Many of these units are among the largest pieces of equipment in the world and are designed for use in the largest earthmoving and mining applications globally. In addition, we had over 290 ancillary vehicles located in the oil sands, including small shovels, excavators and trucks, as well as loaders, graders, scrapers, cranes, pipelayers and drill rigs, which allow us to execute a full range of jobs for our customers. Our large, diverse fleet gives us flexibility in scheduling jobs and allows us to be responsive to our customers’ needs. A well-maintained fleet is critical in the harsh climatic and environmental conditions we encounter. We operate four significant maintenance and repair centers, which are capable of accommodating the largest pieces of equipment in our fleet, on the sites of the major oil sands projects. These factors help us to be more efficient, thereby reducing costs to our customers to further improve our competitive edge, while concurrently increasing our equipment utilization and thereby improving our profitability.

In addition, we have a major repair facility located at our corporate headquarters near Edmonton, Alberta. This facility can perform the same major maintenance and repair activities as those maintenance centers in the oil sands and therefore acts as a back-up facility in the event of peak maintenance or repair requirements for oil sands equipment.

We provide our customers with resource services to meet their needs across the entire lifecycle of a project. These services include overburden removal, engineering assistance, construction of infrastructure, site grading, piling and pipe installation, day-to-day site maintenance, equipment supply, site upgrading services and land rehabilitation. Given the capital intensive and long-term nature of oil sands projects, our broad service offerings provide us with a competitive advantage and position us to transition from one stage of the project to the next, as we typically have knowledge of a project during its initial planning and budgeting phase. We use this knowledge to help secure contracts during the initial construction of the project as well as plan for recurring and follow-on work. As a result, we have a reputation as a “first-in, last-out” service provider in the oil sands. For example, we have both removed overburden and reclaimed land for Syncrude.

We have worked successfully for many years and believe we have well-established relationships with major oil sands and conventional oil and gas producers. These relationships are based on our success in meeting our

Index to Financial Statements

customers’ requirements, including strong safety and performance records, a well-maintained, highly capable fleet with specific equipment dedicated to individual customers and a staff of well-trained, experienced supervisors, operators and mechanics. Historically, our largest customers by revenue have included Syncrude Canada Ltd., Suncor Energy Inc. and Albian Sands Energy Inc. We have worked with oil sands mining operators Syncrude, Suncor and Albian since they began operations in the oil sands, which in the case of Syncrude and Suncor was over 30 years ago.

Our management team has well-established relationships with major oil sands producers and other resource industry leaders in our core markets. We believe that our management team’s experience in the resource services and mining industries enhances our ability to accomplish our strategic objectives. The entire management team is focused on further developing our culture of performance and accountability and continuing our tradition of offering high quality service to our customers. In addition, our management and operations teams have the local-level knowledge to identify acquisition opportunities.

We intend to build on our market leadership position and successful track record with our customers in the oil sands to benefit from the expected rapid growth in this end market. The NEB estimates that between 2007 and 2015 $8.5 billion to $10.9 billion of annual capital expenditures, for a total of over $86 billion, will be required to achieve expected increases in production. We believe that these planned expenditures will not only allow us to increase our business from current projects but also create opportunities to provide our services to new projects. To capitalize on these opportunities, we plan to continue to add to our equipment fleet. This new equipment will be acquired in regular intervals and, together with our existing fleet, will enable us to compete for new business opportunities in the oil sands as they arise.

We intend to build on our “first-in” position to cross-sell other services that we provide. Our complementary service segments, including site preparation, pipeline installation, piling and other mining services allow us to compete for many different forms of business. Given our technical capabilities, performance history and on-site presence, we are well positioned to compete for new business in our service segments. For example, either during or after providing site preparation services to customers, we can often use the specific knowledge of the project to provide other services such as underground pipeline installation or piling work. We are often able to provide these additional services seamlessly and quickly, utilizing existing on-site resources. Unplanned work requirements frequently arise with little notice, which we are well-positioned to execute, given our on-site location and complementary service offerings. For example, during a recent site development project, we were asked with short lead time to install a large diameter water pipeline. We were able to coordinate our site development and pipeline projects such that we began installing pipeline on a completed portion of the site without impacting the site development schedule. Furthermore, we intend to pursue selective acquisition growth opportunities that expand our complementary service offerings.

We provide services both during construction and while the project is in operation. Work required as an integral part of an operating project provides us with the opportunity to perform recurring services for our

Index to Financial Statements

customers. Over the past several years we have increased our recurring revenues from mining services, including overburden removal, reclamation, road construction and maintenance and surface mining, from 20% of revenues in fiscal 2004 to 34% in fiscal 2007. Oil sands operators’ needs for these types of services will increase as they expand their operations and as new oil sands operations come on line. We expect to increase the amount of revenues from recurring services to our existing customers. For our planning purposes, we estimate that there are typically annual outsourced operating expenses of approximately 2% to 10% of the total capital expenditures on a mining project.

Several of our oil sands customers have announced intentions to increase their production capacity by expanding the infrastructure at their sites. We intend to continue to build on our relationships with these and other existing oil sands customers to win a substantial share of the mining and site preparation, piling and pipeline services outsourced in connection with these projects. For example, we worked closely with Albian and its largest shareholder, Shell, at the Muskeg River site during its development in 2001 and we were recently awarded new work on the Jackpine expansion project.

Canada has significant reserves of various natural resources, including diamonds, uranium, coal and gold. We intend to utilize the expertise we have gained in the oil sands to provide similar services to other natural resource mining companies. For example, we entered into a contract with De Beers in November 2005 to provide site preparation services over a 27-month period at its second diamond mine in Canada. We are actively working with existing customers on additional “planning-stage” opportunities outside the oil sands.

We have initiated an operational improvement plan focused on implementing systems and process improvements, performance measurement techniques, enhanced communication and improved organizational effectiveness. This plan is designed to enhance our profitability, competitiveness and ability to effectively respond to opportunities in the markets we serve by improving the availability of our equipment through enhanced maintenance, providing the opportunity for increased utilization. Given our large fleet and the industry’s shortage of available machinery, we are implementing strategies to increase the utilization of our fleet by deploying our equipment more efficiently to improve revenues. This initiative will also enhance margins by taking advantage of the fixed-cost nature of our equipment. Our maintenance initiative will further improve margins by improving equipment availability and reducing repair time, thereby enabling us to deploy our fleet for longer periods of time and more frequently.

Our business is primarily driven by the demand for our services from the development, expansion and operation of oil sands projects. Decisions by oil sands operators to make capital investments are driven by a number of factors, with one of the most important being the expected long-term price of oil.

Oil sands are grains of sand covered by a thin layer of water and coated by heavy oil, or bitumen. Bitumen, because of its structure, does not flow, and therefore requires non-conventional extraction techniques to separate it from the sand and other foreign matter. There are currently two main methods of extraction: open pit mining, where bitumen deposits are sufficiently close to the surface to make it economically viable to recover the bitumen by treating mined sand in a surface plant; and in-situ, where bitumen deposits are buried too deep for open pit mining to be cost effective, and operators instead inject steam into the deposit so that the bitumen can be

Index to Financial Statements

separated from the sand and pumped to the surface. We currently provide most of our services to companies operating open pit mines to recover bitumen reserves. These customers utilize our services for surface mining, site preparation, piling, pipe installation, site maintenance, equipment and labor supply and land reclamation.

According to the EUB, the oil sands contained almost 173 billion barrels of established oil reserves as of the end of 2006, approximately 32 billion barrels of which is recoverable by open pit mining techniques. This is second only to Saudi Arabia’s 264 billion barrels and approximately six times the recoverable reserves in the United States. Beginning in the mid-1990’s, increasing global energy demand and improvements in mining and in-situ technology resulted in a significant increase in oil sands investments. This increased level of investment was also driven by a revised royalty regime adopted by the Government of Alberta in 1997, which was designed to accelerate investment in the oil sands. Under the revised royalty structure, oil sands operators pay a royalty of 1% of gross revenue until the operator has recovered all its allowed costs in respect of a project plus a return allowance, after which the royalty increases to the greater of 25% of net revenue or 1% of gross revenue.

The following maps show the location of the oil sands and the primarily surface mineable leases within the oil sands.

Index to Financial Statements

Outlook. According to CAPP, approximately $45 billion was invested in the oil sands from 1996 through 2005. Oil sands production has grown four-fold since 1990 and exceeded one million barrels per day in 2005. CAPP expects oil sands production to reach approximately 3.0 million barrels per day and account for 71% of total Canadian oil production by 2015. By comparison, the Ghawar field in Saudi Arabia currently produces 5.0 million barrels per day, representing over 6% of the world’s total production and over 50% of Saudi Arabia’s production.

The following chart shows the expected capital expenditures in the oil sands through 2015 according to the NEB’s 2006 Energy Market Assessment.

Index to Financial Statements

According to the NEB’s 2006 Energy Market Assessment, between 2007 and 2015 $8.5 billion to $10.9 billion of annual capital expenditures, for a total of over $86 billion, will be required to achieve expected increases in production. Both the CERI and the NEB have found that even at a price of approximately $25 per barrel the rate of oil sands supply can profitably double in the next 10 to 12 years. According to the NEB, as of June 2006, there were 21 mining and upgrader projects in various stages, ranging from announcement to construction, with start-up dates through 2010. If all of these projects proceed as scheduled, the planned investment in new projects for 2006 through 2010 will exceed $38 billion and an additional $17 billion will be invested in project additions or existing projects over the same period. Beyond 2010, several new multibillion dollar projects and a number of smaller multimillion dollar projects are being considered by various oil sands operators. We intend to pursue business opportunities from these projects. According to the NEB, the 21 projects with start up dates through 2010 are as follows:

Pipeline Infrastructure and Construction. To transport the increased production expected from the oil sands and to provide natural gas as an energy source to the oil sands region, significant investment will be required to expand pipeline capacity. To date, there have been significant greenfield and expansion projects announced, including: Kinder Morgan Canada’s proposal to expand the TransMountain pipeline system, which transports oil from the oil sands area to Burnaby, British Columbia; Enbridge Inc.’s proposed Gateway pipeline, which will transport oil from the oil sands area to Kitimat, British Columbia; the proposed Access Pipeline (a joint venture between MEG Energy Corp. and Devon ARL Canada Corp.), which will transport bitumen from the oil sands to refineries in Edmonton, Alberta and diluent from Edmonton, Alberta to the oil sands area; TransCanada Corporation’s proposed Keystone pipeline project, which will transport oil from Hardisty, Alberta to the Chicago area; and the proposed Spirit pipeline system (a joint venture between Kinder Morgan Canada and Pembina Pipeline Corporation), which will transport condensate from Kitimat, British Columbia to Edmonton, Alberta. We are in various stages of discussions to provide services for some of these projects. We believe that our service offerings and pipeline construction experience position us well to compete for additional sizeable pipeline opportunities required for the expected growth in oil sands production.

Index to Financial Statements

We provide services to conventional oil and gas producers, in addition to our work in the oil sands. The Canadian Energy Pipeline Association estimates that over $20 billion of pipeline investment in Canada will be required for the development of new long haul pipelines, feeder systems and other related pipeline construction. Conventional oil and gas producers require pipeline installation services in order to connect producing wells to nearby pipeline systems. According to CAPP, Canada is one of the world’s largest producers of oil and gas, producing approximately 2.6 million barrels of oil per day and approximately 17.2 billion cubic feet of natural gas per day. Canadian natural gas production is expected to increase with the development of arctic gas reserves. A producer group has been formed by Imperial Oil Limited, ConocoPhillips Canada Limited, Shell Canada and the Aboriginal Pipeline Group for the purpose of bidding for work on the construction of a pipeline proposed to extend 1,220 kilometers (758 miles) from the MacKenzie River delta in the Beaufort Sea to existing natural gas pipelines in northern Alberta. Under the group’s proposal, Imperial Oil will lead the construction and operate the pipeline. We are actively working with Imperial Oil and have provided it with constructability and planning reviews. We hope to repeat our history of providing initial engineering assistance on projects and then subsequently being awarded contracts on these projects.

According to the government agency Natural Resources Canada, Canada is also one of the largest mining nations in the world, producing more than 60 different minerals and metals. In 2006, the mining and minerals processing industries contributed $40 billion to the Canadian economy, an amount equal to approximately 3.7% of GDP. The value of minerals produced (excluding petroleum and natural gas) reached $33.6 billion in 2006. According to the EUB, Canada ranks tenth in the world in total proven coal reserves. Alberta contains 70% of Canada’s coal reserves and, by volume, produces approximately half of the coal mined in Canada annually.

The diamond mining industry in Canada is relatively new, having extracted diamonds for only eight years. According to Natural Resources Canada, the industry has grown from 2.6 million carats of production in 2000 to an estimated 13.2 million carats of production in 2006, representing a compounded annual growth rate of approximately 38%, and establishing Canada as the third largest diamond producing country in the world by value after Botswana and Russia. We believe Canadian diamond mining will continue to grow as existing mines increase production and new mine projects are developed. Outside the oil sands, we have identified the growing Canadian diamond mining industry as a primary target for new business opportunities.

Canada is the world leader in uranium mining. The two largest high-grade deposits in the world have been discovered in Canada. According to Natural Resources Canada, 80% of Canada’s recoverable reserve base is categorized as “low-cost.” Historically, exploration and production have taken place primarily in Saskatchewan. Recently, however, significant exploration efforts are underway in the Northwest Territories, Yukon, Nunavut, Quebec, Newfoundland and Labrador, Ontario, Manitoba and Alberta, with as many as 90 junior exploration companies involved.

We intend to build on our core services and strong regional presence to capitalize on the opportunities in the minerals mining industries of Canada. According to Natural Resources Canada’s 2007 estimate, capital expenditures in the minerals mining industry will be approximately $8 billion in 2007.

According to the government agency Statistics Canada, the Canadian commercial and public construction market was approximately $25 billion in 2006. According to the Alberta government, the commercial and public construction market in Alberta is expected to grow 3% annually through 2009. As a result of the significant activity in the energy sector, western Canada has experienced and is expected to continue to experience strong economic and population growth. The Alberta government has responded to the potential strain that this growth

Index to Financial Statements

will have on public facilities and infrastructure by allocating approximately $18.2 billion to improvement and expansion projects from 2008 to 2010. This need for infrastructure to support growth, along with historic underinvestment in infrastructure, provides for a strong infrastructure spending outlook.

The success of the energy industry in western Canada is also leading to increased commercial development in many urban centers in British Columbia and Alberta. According to the Alberta government, as of May 2007, the inventory of commercial, retail and residential projects in Alberta was valued at approximately $14.1 billion. These large expenditures will be further supplemented by the 2010 Olympic Winter Games, which will be held in the Vancouver area. The City of Vancouver estimates that the 2010 Olympic Winter Games will require an additional $4.0 billion in infrastructure and construction spending. The significant resources and capital intensive nature of the core infrastructure and construction services required to meet these demands, along with our strong local presence and significant regional experience, position us to implement our business model to capitalize on the large and growing infrastructure and construction demands of western Canada.

We provide our services through three interrelated yet distinct business units: mining and site preparation, piling and pipeline installation. Over the past 50 years, we have developed an expertise operating in the difficult working conditions created by the climate and terrain of western Canada. We provide our services primarily to oil and gas and other natural resource companies.

The chart below shows the revenues generated by each operating segment for the fiscal years ended March 31, 2003 through March 31, 2007:

Our mining and site preparation segment encompasses a wide variety of services. Our contract mining business represents an outsourcing of the equipment and labor component of the oil and gas and other natural resources mining business. Our site preparation services include clearing, stripping, excavating and grading for mining operations and other general construction projects, as well as underground utility installation for plant, refinery and commercial building construction. This business unit utilizes the vast majority of our equipment

Index to Financial Statements

fleet and employs over 900 people. The majority of the employees and equipment associated with this business unit are located in the Canadian oil sands area.

For the fiscal years ended March 31, 2005, 2006 and 2007, revenues from this segment accounted for 74%, 75% and 75% of our total revenues, respectively.

Many oil sands and natural resource mining companies utilize contract services for mine site operations. Our mining services consist of overburden removal; the hauling of sand and gravel; mining of the ore body and delivery of the ore to the crushing facility; supply of labor and equipment to support the owners’ mining operations; construction of infrastructure associated with mining operations; and reclamation activities, which include contouring of waste dumps and placement of secondary materials and muskeg. The major producers outsource mine site operations to contractors such as our company to allow them to focus their resources on exploration and property development and to benefit from a variety of cost efficiencies that we can provide. We believe mining contractors typically have wage rates lower than those of the mining company and more flexible operating arrangements with personnel allowing for improved uptime and performance.

Oil sands operators use our services to prepare their sites for the construction of the mining infrastructure, including extraction plants and upgrading facilities, and for the eventual mining of the oil sands ore located on their properties. Outside of the oil sands, our site preparation services are used to assist in the construction of roads, natural resource mines, plants, refineries, commercial buildings, dams and irrigation systems. In order to successfully provide these types of services in the oil sands, our operators are required to use heavy equipment to transform barren terrain and difficult soil or rock conditions into a stable environment for site development. Our extensive fleet of equipment is used for clearing the earth of vegetation and removing topsoil that is not usable as a stable subgrade and site grading, which includes grading, leveling and compacting the site to provide a solid foundation for transportation or building. We also provide utility pipe installation for the private and public sectors in western Canada. We are experienced in working with piping materials such as HDPE, concrete, PVC and steel. This work involves similar methods as those used for field, transmission and distribution pipelines in the oil and gas industry, but is generally more intricate and time consuming as the work is typically performed in existing plants with numerous tie-ins to live systems.

Our capabilities include the installation of all types of driven and drilled piles, caissons and earth retention and stabilization systems for commercial buildings; private industrial projects, such as plants and refineries; and infrastructure projects, such as bridges. Our piling business employs approximately 150 people. Oil and gas companies developing the oil sands and related infrastructure represented approximately 50% of our piling clients for fiscal 2007. The remaining 50% of our piling clients were primarily commercial construction builders operating in the Edmonton, Calgary, Regina and Vancouver areas.

In providing piling services, we currently operate a variety of crawler-mounted drill rigs, a fleet of 25- to 100-ton capacity piling cranes and pile driving hammers of all types from our Edmonton, Calgary, Regina, Vancouver and Fort McMurray locations. Piles and caissons are deep foundation systems that extend up to 30 meters below a structure. Piles are long narrow shafts that distribute a load from a supported structure (such as a building or bridge) throughout the underlying soil mass and are necessary whenever the available footing area beneath a structure is insufficient to support the load above it. The foundation chosen for any particular structure depends on the strength of the rock or soil, magnitude of structural loads and depth of groundwater level.

For the fiscal years ended March 31, 2005, 2006 and 2007, revenues from this segment accounted for 17%, 19% and 17% of our total revenues, respectively.

We install field, transmission and distribution pipe made of steel, plastic and fiberglass materials. We employ our fleet of construction equipment and skilled technical operators to build and test the pipelines for the

Index to Financial Statements

delivery of oil and natural gas from the producing field to the consumer. Our pipeline teams have expertise in hand welding selected grade pipe and in operating in the harsh conditions of remote regions in western and northern Canada.

Prior to fiscal 2007, virtually all of our revenues in our pipeline business resulted from work performed for EnCana. During fiscal 2007, we expanded our client base in the pipeline division by performing work for Canadian Natural Resources Limited, Suncor Energy Inc. and Husky Energy Inc. We believe there are significant opportunities to further increase our market share by capitalizing on the projected pipeline expansion in Canada.

For the fiscal years ended March 31, 2005, 2006 and 2007, revenues from this segment accounted for 9%, 7% and 8% of our total revenues, respectively.

We operate and maintain over 690 pieces of diversified heavy equipment, including crawlers, graders, loaders, mining trucks, compactors, scrapers and excavators, as well as over 660 ancillary vehicles, including various service and maintenance vehicles. The equipment is in good condition, normal wear and tear excepted. Our revolving credit facility is secured by liens on substantially all of our equipment. See “Description of Certain Indebtedness.” We lease some of this equipment under lease terms that include purchase options.

The following table sets forth information regarding our fleet of heavy equipment as of March 31, 2007:

For the fiscal years ended March 31, 2005, 2006 and 2007, we incurred expense of $52.8 million, $64.8 million and $122.3 million, respectively, to maintain our equipment in good working condition.

We derive a significant amount of our revenues from a small number of oil and gas companies. Our customer base includes major energy companies such as Syncrude, Albian, EnCana, Suncor and CNRL. We have

Index to Financial Statements

large mining customers outside of the oil sands, including De Beers. We also perform commercial construction-related services for other customers in the public and private sectors. Our largest three customers for the fiscal year ended March 31, 2007, CNRL, Albian and Syncrude, accounted for 17%, 16% and 12% of our revenues, respectively. Collectively, our five largest customers accounted for 65% and 70% of our revenues for the fiscal years ended March 31, 2007 and 2006, respectively. We have relatively few customers in our mining and site preparation and pipeline installation segments and many small customers in our piling segment. For the last five fiscal years, the majority of our revenues in our pipeline business resulted from work performed for EnCana.

We complete work under the following types of contracts: cost-plus, time-and-materials, unit-price and lump-sum. Each contract contains a different level of risk associated with its formation and execution.

Cost-plus. A cost-plus contract is where all work is completed based on actual costs incurred to complete the work. These costs include all labor, equipment, materials and any subcontractor’s costs. In addition to these direct costs, all site and corporate overhead costs are charged to the job. An agreed upon fee in the form of a fixed percentage is then applied to all costs charged to the project. This type of contract is utilized where the project involves a large amount of risk or the scope of the project cannot be readily determined.

Time-and-materials. A time-and-materials contract involves using the components of a cost-plus job to calculate rates for the supply of labor and equipment. In this regard, all components of the rates are fixed and we are compensated for each hour of labor and equipment supplied. The risk associated with this type of contract is the estimation of the rates and incurring expenses in excess of a specific component of the agreed upon rate. Therefore, any cost overrun must come out of the fixed margin included in the rates.

Unit-price. A unit-price contract is utilized in the execution of projects with large repetitive quantities of work and is commonly utilized for site preparation, mining and pipeline work. We are compensated for each unit of work we perform (for example, cubic meters of earth moved, lineal meters of pipe installed or completed piles). Within the unit-price contract, there is an allowance for labor, equipment, materials and any subcontractor’s costs. Once these costs are calculated, we add any site and corporate overhead costs along with an allowance for the margin we want to achieve. The risk associated with this type of contract is in the calculation of the unit costs with respect to completing the required work.

Lump-sum. A lump-sum contract is utilized when a detailed scope of work is known for a specific project. Thus, the associated costs can be readily calculated and a firm price provided to the customer for the execution of the work. The risk lies in the fact that there is no escalation of the price if the work takes longer or more resources are required than were estimated in the established price. The price is fixed regardless of the amount of work required to complete the project.

The mix of contract types varies year-by-year. For the fiscal year ended March 31, 2007, our contracts consisted of 6% cost-plus, 28% time-and-materials, 53% unit-price and 13% lump-sum.

In addition to the contracts listed above, we also use master service agreements for work in the oil and gas sector where the scope of the project is not known and timing is critical to ensure the work gets completed. The master service agreement is a form of a time-and-materials agreement that specifies what rates will be charged for the supply of labor and equipment to undertake work. The agreement does not identify any specific scope or schedule of work. In this regard, the customer’s representative establishes what work is to be done at each location. We use master service agreements with the work we perform for Syncrude, Suncor and Albian.

We also do a substantial amount of work as a subcontractor where we are governed by the contracts with the general contractor to which we are not a party. Subcontracts vary in type and conditions with respect to the pricing

Index to Financial Statements

and terms and are governed by one specific prime contract that governs a large project generally. In such cases, the contract with the subcontractors contains more specific provisions regarding a specified aspect of a project.

We are party to the following material contracts, other than contracts entered into in the ordinary course of our business:

Employment Agreements with Executive Officers. Please see “Management—Employment Agreements” for information regarding these contracts.

Office Leases with Company Owned by a Former Director. Please see “Related Party Transactions—Office Leases” for information regarding these leases.

Registration Rights Agreement. Please see “Related Party Transactions—Registration Rights Agreement” for information regarding this agreement.

Revolving Credit Facility. Please see “Description of Certain Indebtedness—Revolving Credit Facility” for information regarding the second amended and restated credit agreement that provides our revolving credit facility.

Indenture Governing Our 8³/4% Senior Notes due 2011. Please see “Description of Certain Indebtedness—8³/4% Senior Notes due 2011” for information regarding this indenture.

Our subsidiaries consist of the following, each of which is directly or indirectly wholly-owned by us.

We are party to a joint venture operated through a corporation called Noramac Ventures Inc., or Noramac, with Fort McKay Construction Ltd. This joint venture was created for the purpose of performing contracts for the construction, development and operation of open-pit mining projects within a 50 kilometre radius of Fort McKay, Alberta, which require the provision of heavy construction equipment. The affairs of Noramac are

Index to Financial Statements

managed, and all decisions and determinations with respect to Noramac are made, by a management committee equally represented by us and our partner. The management committee is responsible for determining the percentage of work in relation to each contract that will be performed by us and by our partner, provided that contracts for a duration of less than two years and of a tender value between $10.0 million and $100.0 million which require a parent guarantee or performance bond will be subcontracted to us. The joint venture agreement provides that if the management committee does not tender for a contract, or fails to reach agreement on the terms upon which Noramac will tender for a contract, we or our partner may pursue the contract in our respective capacities without hindrance, interference or participation by the other party. The joint venture agreement does not prohibit or restrict us from undertaking and performing, for our own account, any work for existing customers other than work to be performed by Noramac pursuant to an existing contract between Noramac and such customer. The joint venture is accounted for as a variable interest entity and consolidated in our financial statements.

We have long-term relationships with the following equipment suppliers: Finning International Inc. (45 years), Wajax Income Fund (20 years) and Brandt Tractor Ltd. (30 years). Finning is a major Caterpillar heavy equipment dealer for Canada. Wajax is a major Hitachi equipment supplier to us for both mining and construction equipment. We purchase or rent John Deere equipment, including excavators, loaders and small bulldozers, from Brandt Tractor. In addition to the supply of new equipment, each of these companies is a major supplier for equipment rentals, parts and service labor.

We obtain tires for our equipment from local distributors. Tires of the size and specifications we require are generally in short supply. We expect the supply/demand imbalance for certain tires to continue for some time.

Our business is highly competitive in each of our markets. Historically, the majority of our new business was awarded to us based on past client relationships without a formal bidding process, in which typically a small number of pre-qualified firms submit bids for the project work. Recently, in order to generate new business with new customers, we have had to participate in formal bidding processes. As new major projects arise, we expect to have to participate in bidding processes on a meaningful portion of the work available to us on these projects. Factors that impact competition include price, safety, reliability, scale of operations, availability and quality of service. Most of our clients and potential clients in the oil sands area operate their own heavy mining equipment fleet. However, these operators have historically outsourced a significant portion of their mining and site preparation operations and other construction services.

Our principal competitors in the mining and site preparation segment include Cow Harbour, Cross Construction Ltd., Klemke Mining Corporation, Ledcor Construction Limited, Neegan Development Corporation Ltd., Peter Kiewit Sons Co., Tercon Contractors Ltd., Sureway Construction Ltd. and Thompson Bros. (Constr) Ltd. The main competition to our deep foundation piling operations comes from Agra Foundations Limited and Double Star Co. The primary competitors in the pipeline installation business include Ledcor Construction Limited, Washcuk Pipe Line Construction Ltd. and Midwest Management (1987) Ltd. Voice Construction Ltd. and I.G.L. Industrial Services are the major competitors in underground utilities installation.

In the public sector, we compete against national firms, and there is usually more than one competitor in each local market. Most of our public sector customers are local governments that are focused on serving only their home regions. Competition in the public sector continues to increase, and we typically choose to compete on projects only where we can utilize our equipment and operating strengths to secure profitable business.

We own and lease a number of buildings and properties for use in our business. Our administrative functions are located at our headquarters near Edmonton, Alberta, which also houses a major equipment

Index to Financial Statements

maintenance facility. Project management and equipment maintenance are also performed at regional facilities in Calgary and Fort McMurray, Alberta; Vancouver, Fort Nelson and New Westminster, British Columbia; and Regina and Martensville, Saskatchewan. We occupy office and shop space in British Columbia, Alberta and Saskatchewan under leases which expire between late 2007 and 2017, subject to various renewal and termination rights. We expect to renew our office lease that expires in 2007 with rates that are competitive with the prevailing markets rates at that time. We also occupy, without charge, some customer-provided lands. Our revolving credit facility is secured by liens on substantially all of our properties. See “Description of Certain Indebtedness.” The following table describes our primary facilities.

Our locations were chosen for their geographic proximity to our major customers. We believe our facilities are sufficient to meet our needs for the foreseeable future.

Index to Financial Statements

Many aspects of our operations are subject to various federal, provincial and local laws and regulations, including, among others:

We believe we have all material required permits and licenses to conduct our operations and are in substantial compliance with applicable regulatory requirements relating to our operations. Our failure to comply with the applicable regulations could result in substantial fines or revocation of our operating permits.

Our operations are subject to numerous federal, provincial and municipal environmental laws and regulations, including those governing the release of substances, the remediation of contaminated soil and groundwater, vehicle emissions and air and water emissions. These laws and regulations are administered by federal, provincial and municipal authorities, such as Alberta Environment, Saskatchewan Environment, the British Columbia Ministry of Environment, and other governmental agencies. The requirements of these laws and regulations are becoming increasingly complex and stringent, and meeting these requirements can be expensive. The nature of our operations and our ownership or operation of property expose us to the risk of claims with respect to environmental matters, and there can be no assurance that material costs or liabilities will not be incurred with such claims. For example, some laws can impose strict, joint and several liability on past and present owners or operators of facilities at, from or to which a release of hazardous substances has occurred, on parties who generated hazardous substances that were released at such facilities and on parties who arranged for the transportation of hazardous substances to such facilities. If we were found to be a responsible party under these statutes, we could be held liable for all investigative and remedial costs associated with addressing such contamination, even though the releases were caused by a prior owner or operator or third party. We are not currently named as a responsible party for any environmental liabilities on any of the properties on which we currently perform or have performed services. However, our leases typically include covenants which obligate us to comply with all applicable environmental regulations and to remediate any environmental damage caused by us to the leased premises. In addition, claims alleging personal injury or property damage may be brought against us if we cause the release of, or any exposure to, harmful substances.

Capital expenditures relating to environmental matters during the fiscal years ended March 31, 2005, 2006 and 2007 were not material. We do not currently anticipate any material adverse effect on our business or financial position as a result of future compliance with applicable environmental laws and regulations. Future events, however, such as changes in existing laws and regulations or their interpretation, more vigorous enforcement policies of regulatory agencies or stricter or different interpretations of existing laws and regulations may require us to make additional expenditures which may be material.

As of March 31, 2007, we had over 200 salaried and over 1,500 hourly employees. We also utilize the services of subcontractors in our construction business. Approximately 10% to 15% of the construction work we do is done through subcontractors. Approximately 1,300 employees are members of various unions and work under collective bargaining agreements. The majority of our work is done through employees governed by a collective bargaining agreement with the International Union of Operating Engineers Local 955, the primary term of which expires on October 31, 2009, and under a collective bargaining agreement with the Alberta Road Builders and Heavy Construction Association and the International Union of Operating Engineers Local 955, the primary term of which expired. This contract is currently being negotiated. Additionally, we recently signed a

Index to Financial Statements

10-year labor agreement for mining work at the CNRL site in the oil sands. We are subject to other industry and specialty collective agreements under which we complete work, and the primary terms of all of these agreements are currently in effect. We believe that our relationships with all our employees, both union and non-union, are satisfactory. We have never experienced a strike or lockout.

In February 2005, Renée Gouin and Elaine Busch commenced a claim against their brothers, Martin Gouin and Roger Gouin, their father, Jean Yvon Gouin, and a number of companies, including our subsidiary, North American Construction Group Inc. The plaintiffs allege that they maintain beneficial ownership interests in the Gouin “family business.” The assets of certain of those businesses were sold to us in the Acquisition. The plaintiffs further allege that the proceeds of such ownership interests, including cash and preferred shares of NACG Preferred Corp., our subsidiary, are being wrongfully held by the Gouin brothers and that certain management fees paid by North American Construction Group Inc. to the corporate shareholder of our predecessor company, Norama Ltd., were excessive. The plaintiffs seek, among other things: damages in the amount of $57.8 million each; a declaration that they hold a beneficial interest in the “family business;” a constructive trust over the “family business;” an accounting and tracing of the sale proceeds, assets and shares; and rectification of share registers.

Pursuant to the purchase agreement relating to the Acquisition, Martin Gouin, Roger Gouin, Norama Ltd., and North American Equipment Ltd. have agreed to indemnify North American Construction Group Inc. We have notified Martin Gouin, Roger Gouin, Norama Ltd., and North American Equipment Ltd. that we are seeking indemnity from them under the purchase agreement for the cost of our defense and any damages arising out of the lawsuit. We have taken the position that North American Construction Group Inc. is not a properly named defendant in the lawsuit. Discoveries are ongoing and we will continue to assess our position as the matter proceeds.

From time to time, we are a party to litigation and legal proceedings that we consider to be a part of the ordinary course of business. While no assurance can be given, we believe that, taking into account reserves and insurance coverage, none of the litigation or legal proceedings in which we are currently involved, including the litigation described above, could reasonably be expected to have a material adverse effect on our business, financial condition or results of operations. We may, however, become involved in material legal proceedings in the future.

Index to Financial Statements

The following sets forth information about our directors and executive officers. Ages reflected are as of May 31, 2007. Each director is elected for a one-year term or until such person’s successor is duly elected or appointed, unless his office is earlier vacated. Unless otherwise indicated below, the business address of each of our directors and executive officers is Zone 3, Acheson Industrial Area, 2-53016 Highway 60, Acheson, Alberta T7X 5A7.

Rodney J. Ruston became our President and Chief Executive Officer and one of our directors on May 9, 2005. Previously, Mr. Ruston was Managing Director and Chief Executive Officer of Ticor Limited, a publicly-listed Australian natural resources company with operations in Australia, South Africa and Madagascar, from June 2000 to July 2004. He was a Principal with Ruston Consulting Services Pty. Ltd., a management consulting company providing business advice to the natural resources industry from September 1999 to June 2000. Mr. Ruston has spent his entire career in the natural resources industry, holding management positions with

Index to Financial Statements

Pasminco Limited, Savage Resources Limited, Wambo Mining Corporation, Oakbridge Limited and Kembla Coal & Coke Pty. Limited. From July 2003 until May 2005, he served as Chairman of the Australian Minerals Tertiary Education Council. Mr. Ruston received his Bachelor of Engineering in Mining from the University of New South Wales in Australia and a Master of Business Administration from the University of Wollongong.

Douglas A. Wilkes became our Vice President, Finance and Chief Financial Officer on September 18, 2006. From January 2005 to September 2006, Mr. Wilkes was a self-employed consultant. During this period, Mr. Wilkes also served as Chief Financial Officer of Liberty Copper Corporation from June 2005 to December 2005. From April 2004 to December 2004, he served as Chief Financial Officer for Canfor Corporation. Mr. Wilkes was Chief Financial Officer of Slocan Forest Products Ltd. between April 2002 and March 2004 and of BCR Group of Companies between May 2000 and March 2002. Mr. Wilkes was also Chief Financial Officer of Tolko Industries from 1992 to 2000. His early career experiences include financial leadership roles with Weyerhaeuser Company and BC Hydro after serving five years with a major global audit accounting firm. He is a Chartered Accountant and holds a Bachelor of Commerce from the University of British Columbia.

Robert G. Harris joined us in June 2006 as Vice President, Human Resources, Health, Safety & Environment. Mr. Harris began his career in 1969 with Chrysler Canada in various personnel and human resources positions before taking on the role of Environmental Health & Safety Manager and subsequently the Labour Relations Supervisor role. In 1982, he accepted a position with IPSCO Inc. where he was responsible for human resources over six facilities in Canada and the United States. Since 1987, he has held senior human resources roles at Labatt Breweries of Canada including National Manager, Industrial Relations & Training and Director, Human Resources at both regional and national levels. Mr. Harris graduated in 1969 from the University of Windsor with a Bachelor of Arts in Sociology/Psychology and has received his Certified Human Resources Professional designation.

Christopher J. Hayman joined us in January 2005 as Treasurer, a position he held until being appointed Vice President, Finance in June 2005 and Vice President, Supply Chain in September 2006. Previously he worked for Finning Canada, from November 1998 to January 2005, initially as Assistant Controller and eventually becoming Vice President and Controller. Prior to this he held positions at Enbridge, Telus and Thorne, Ernst and Whinney. Mr. Hayman received his Bachelor of Commerce with an Accounting major from the University of Alberta and is a Canadian Chartered Accountant.

William M. Koehn has announced his resignation, effective July 31, 2007. Mr. Koehn became our Vice President, Operations on November 26, 2003 and our Chief Operating Officer on December 8, 2004. Previously, he served as Vice President, Operations for our predecessor company since 2002. He joined our predecessor company in 1989 and became the Fort McMurray Regional Manager in 1997. Prior to this he was a Senior Civil Engineer with Quintette Coal Ltd. Mr. Koehn attended the University of Alberta and received his Bachelor of Science in Civil Engineering and has completed his Masters in Construction Engineering and Management.

Miles W. Safranovich joined us in November 2004 and held the position of General Manager, Industrial and Heavy Civil until he was appointed Vice President, Contracts and Technical Services in July 2005 and Vice President, Business Development and Estimating in July 2006. He has extensive experience in the construction industry, spending most of his career at Voice Construction Ltd. where he held a variety of positions between 2000 and October 2004, including Operations Manager and Construction Manager. Mr. Safranovich attended the University of Alberta and obtained a Bachelor of Science in Biology in 1986 and a Bachelor of Science in Civil Engineering specializing in Construction Management in 1992.

Ronald A. McIntosh became the Chairman of our Board of Directors on May 20, 2004. Mr. McIntosh was Chairman of NAV Energy Trust, a Calgary-based oil and natural gas investment fund, from January 2004 to August 2006. Between October 2002 and January 2004, he was President and Chief Executive Officer of Navigo Energy Inc. and was instrumental in the conversion of Navigo into NAV Energy Trust. From July 2002 to October 2002, Mr. McIntosh managed his personal investments. He was Senior Vice President and Chief

Index to Financial Statements

Operating Officer of Gulf Canada Resources Limited from December 2001 to July 2002 and Vice President, Exploration and International of Petro-Canada from April 1996 through November 2001. Mr. McIntosh’s significant experience in the energy industry includes the former positions of Chief Operating Officer of Amerada Hess Canada and Director of Crispin Energy Inc. Mr. McIntosh is on the Board of Directors of Advantage Oil & Gas Ltd. and C1 Energy Ltd.

George R. Brokaw became one of our Directors on June 28, 2006. Mr. Brokaw joined Perry Capital, L.L.C., an affiliate of Perry Corp., in August 2005 as a Managing Director. Perry Strategic Capital Inc., also an affiliate of Perry Corp., is a private investment firm and provided certain services to us pursuant to an advisory services agreement. Investment entities controlled by Perry Corp. are holders of our common shares. See “Related Party Transactions—Advisory Services Agreement” and “Principal and Selling Shareholders.” From January 2003 to May 2005, Mr. Brokaw was Managing Director (Mergers & Acquisitions) of Lazard Frères & Co. LLC, which he joined in 1996. Between 1994 and 1996, he was an investment banking associate for Dillon Read & Co. Mr. Brokaw received a Bachelor of Arts degree from Yale University and a J.D. and M.B.A. from the University of Virginia.

John A. Brussa became one of our Directors on November 26, 2003. Mr. Brussa is a senior partner and head of the Tax Department at the law firm of Burnet, Duckworth & Palmer LLP, a leading natural resource and energy law firm located in Calgary. He has been a partner since 1987 and has worked at the firm since 1981. Mr. Brussa is Chairman of Penn West Energy Trust, Crew Energy Inc. and Divestco Inc. Mr. Brussa also serves as a director of a number of natural resource and energy companies and mutual fund trusts. He is a member and former Governor of the Executive Committee of the Canadian Tax Foundation. Mr. Brussa attended the University of Windsor and received his Bachelor of Arts in History and Economics in 1978 and his Bachelor of Laws in 1981.

John D. Hawkins became one of our Directors on October 17, 2003. Mr. Hawkins joined The Sterling Group, L.P. in 1992 and has been a Partner since 1999. The Sterling Group, a private equity investment firm, provided certain services to us pursuant to an advisory services agreement, and an investment entity affiliated with The Sterling Group is a holder of our common shares. See “Related Party Transactions—Advisory Services Agreement” and “Principal and Selling Shareholders.” Before joining Sterling he was on the professional staff of Arthur Andersen & Co. from 1986 to 1990. He received a Bachelor of Science in Business Administration in Accounting from the University of Tennessee and his M.B.A. from the Owen Graduate School of Management at Vanderbilt University.

William C. Oehmig served as Chairman of our Board of Directors from November 26, 2003 until passing off this position and assuming the role of Director on May 20, 2004. He is a Partner with The Sterling Group, L.P., a private equity investment firm. The Sterling Group provided certain services to us pursuant to an advisory services agreement, and an investment entity affiliated with The Sterling Group is a holder of our common shares. See “Related Party Transactions—Advisory Services Agreement” and “Principal and Selling Shareholders.” Prior to joining Sterling in 1984, Mr. Oehmig worked in banking, mergers and acquisitions, and represented foreign investors in purchasing and managing U.S. companies in the oilfield service, manufacturing, distribution, heavy equipment and real estate sectors. He began his career in Houston in 1974 at Texas Commerce Bank. Mr. Oehmig currently serves on the boards of Propex Inc. and Panolam Industries International Incorporated. In the past he has served as Chairman of Royster-Clark, Purina Mills, and as a director of Exopack and Sterling Diagnostic Imaging. Mr. Oehmig received his B.B.A. in economics from Transylvania University and his M.B.A. from the Owen Graduate School of Management at Vanderbilt University.

Richard D. Paterson became one of our Directors on August 18, 2005. Mr. Paterson has been a Managing Director of Genstar Capital since 1988. Genstar Capital provided certain services to us pursuant to an advisory services agreement, and certain investment entities controlled by Genstar are holders of our common shares. See “Related Party Transactions—Advisory Services Agreement” and “Principal and Selling Shareholders.” Before founding Genstar Capital, Mr. Paterson served as Senior Vice President and CFO of Genstar Corporation, a

Index to Financial Statements

NYSE company, where he was responsible for finance, tax, information systems and public reporting. He has been active in corporate acquisitions for more than 25 years. Mr. Paterson started his career in 1964 as an auditor with Coopers & Lybrand in Montreal. He is currently a Director of INSTALLS Inc. LLC, American Pacific Enterprises LLC, Propex Inc., Woods Equipment Company and Altra Industrial Motion, Inc. Mr. Paterson earned a Bachelor of Commerce from Concordia University and is a Chartered Accountant.

Allen R. Sello became one of our Directors on January 26, 2006. His career began at Ford Motor Company of Canada in 1964, where he held numerous finance and marketing management positions, including Treasurer. In 1979 Mr. Sello joined Gulf Canada Limited, at which he held various senior financial positions, including Vice President and Controller. He was appointed Vice President, Finance of successor company Gulf Canada Resources Limited in 1987 and Chief Financial Officer in 1988. Mr. Sello then joined International Forest Products Ltd. in 1996 as Chief Financial Officer. From 1999 until his retirement in 2004 he held the position of Senior Vice President and Chief Financial Officer for UMA Group Limited. Mr. Sello is currently Chair of the Vancouver Board of Trade Government Budget and Finance Committee, a trustee of Sterling Shoes Income Fund and a director of Infowave Software Inc. Mr. Sello received his Bachelor of Commerce from the University of Manitoba and his M.B.A. from the University of Toronto.

Peter W. Tomsett became one of our Directors in September 2006. From September 2004 to January 2006, Mr. Tomsett was President & Chief Executive Officer of Placer Dome Inc. based in Vancouver. He joined the Placer Dome Group in 1986 as a Mining Engineer with the Project Development group in Sydney, Australia. After various project and operating positions, he assumed the role of Executive Vice President, Asia-Pacific for Placer Dome Inc. in 2001. In 2004, Mr. Tomsett also took on responsibility for Placer Dome Africa which included mines in South Africa and Tanzania. Mr. Tomsett has been a Director of the Minerals Council of Australia, the World Gold Council and the International Council for Mining & Metals. He is a member of the Australian Institute of Company Directors, the Australian Institute of Mining and Metallurgy and the Canadian Institute of Mining, Metallurgy and Petroleum. Mr. Tomsett graduated with a Bachelor of Engineering (Honours) in Mining Engineering from the University of New South Wales and also attained a Master of Science (Distinction) in Mineral Production Management from Imperial College, London. He is also a director of Silver Standard Resources Inc.

K. Rick Turner became one of our Directors on November 26, 2003. Mr. Turner has been employed by Stephens’ family entities since 1983. SF Holding Corp., formerly Stephens Group, Inc., provided certain services to us pursuant to an advisory services agreement, and an investment entity controlled by SF Holding Corp. is a holder of our common shares. See “Related Party Transactions—Advisory Services Agreement” and “Principal and Selling Shareholders.” Mr. Turner is currently Senior Managing Principal of The Stephens Group, LLC. He first became a private equity principal in 1990 after serving as the Assistant to the Chairman, Jackson T. Stephens. His areas of focus have been oil and gas exploration, natural gas gathering, processing industries and power technology. He currently serves on the board of two other publicly-held companies: Energy Transfer Partners and Energy Transfer Equity. He also serves on numerous private company boards, including JV Industrial; SmartSignal Corporation; BTEC Turbines, LP; Spitzer Industries, Inc.; JEBCO Seismic, LP; Seminole Energy Services, LLC; Multi-Shot, LLC; and Vestcom International, Inc. Mr. Turner earned his B.S.B.A. from the University of Arkansas and is a non-practicing CPA.

Our board supervises the management of our business as provided by Canadian law. We comply with the listing requirements of the New York Stock Exchange applicable to domestic listed companies, which require that our board of directors be composed of a majority of independent directors within one year of the listing of our common shares on the New York Stock Exchange. Accordingly, we have adjusted the board membership so that a majority of the board members are independent.

Index to Financial Statements

None of the members of the Compensation Committee is or has been one of our officers or employees, and none of our executive officers served during fiscal 2007 on a board of directors of another entity which has employed any of the members of the Compensation Committee.

We provide access through our website at www.naepi.ca to current information relating to governance, including a copy of each board committee charter, our Code of Conduct, our corporate governance guidelines and other matters impacting our governance principles. You may also contact our Investor Relations department for paper copies of these documents free of charge. The information contained in or accessible through our website is not a part of this prospectus or the registration statement of which this prospectus forms a part.

For information regarding compensation of our directors and executive officers, please see Item 6.B “Compensation” in our Annual Report on Form 20-F for the year ended March 31, 2007, as amended, which is incorporated by reference in this prospectus.

Index to Financial Statements

We were party to an advisory services agreement, dated November 21, 2003, with The Sterling Group, L.P., Genstar Capital, L.P., Perry Strategic Capital Inc., and SF Holding Corp., referred to in the agreement as the “sponsors,” that was terminated in connection with the initial public offering of our common shares on November 28, 2006 for aggregate consideration of $2.0 million. Pursuant to the agreement, the sponsors provided certain services to us, including financial advisory services in connection with corporate financing transactions and business combinations. Under the agreement, at the closing of the Acquisition, we paid a one-time transaction fee of US$3.0 million to Sterling and a one-time transaction fee of US$3.0 million to be shared among the sponsors and BNP Paribas Private Capital Group on a pro rata basis in accordance with their respective equity commitments to NACG Holdings Inc. We also reimbursed the sponsors for their expenses. Under the agreement, at the closing of the Acquisition, we paid to the sponsors a pro rated management fee for the period from closing until March 31, 2004 totaling approximately $133,000. In exchange for the sponsors’ services under the advisory services agreement, on each June 30, we were obligated to pay the sponsors whose services had not terminated in accordance with the agreement, as a group, an annual management fee in cash totaling the greater of $400,000 or 0.5% of our EBITDA for the previous twelve-month period ended March 31. On June 30, 2006, we paid the sponsors, as a group, $400,000 for the twelve months ended March 31, 2006. The agreement also provided that we would indemnify the sponsors against liabilities relating to their services and would reimburse the sponsors for their expenses in connection with their services. This agreement was not negotiated on an arms’-length basis.

In addition, the agreement provided that if we or any of our subsidiaries determined within ten years of the date of the closing of the Acquisition to acquire any business or assets having a value of US$1.0 million or more, referred to in the agreement as a “future corporate transaction,” or to offer its securities for sale publicly or privately or to otherwise raise any debt or equity financing, referred to in the agreement as a “future securities transaction,” the relevant company would retain one or more of the sponsors, whose services had not been terminated in accordance with the agreement, as a group, as consultants with respect to the transaction. For any future corporate transactions, the relevant sponsors were entitled under the agreement to receive a fee in the amount of 1% of the aggregate consideration paid for the Acquisition plus the aggregate amount of assumed liabilities and, regardless of whether such future corporate transaction was consummated, reimbursement of any expenses or fees incurred by any sponsor in connection therewith. For any future securities transactions, the relevant sponsors were entitled to receive under the agreement a fee in the amount of 0.5% of the aggregate gross proceeds to the companies from such transaction and, regardless of whether such future securities transaction was consummated, reimbursement of any expenses or fees incurred by any sponsor in connection therewith. Upon completion of the initial public offering, we paid the sponsors collectively a fee of $853,966.

We are party to lease agreements with Acheson Properties Ltd., a company owned, indirectly and in part, by Martin Gouin, one of our former directors. Mr. Gouin has a 50% beneficial interest in Acheson Properties Ltd. Pursuant to the agreements, we lease our corporate headquarters in Acheson, Alberta, and our offices in Fort Nelson, British Columbia and Regina, Saskatchewan. See “Business—Properties and Facilities.” For the fiscal years ended March 31, 2007, 2006 and 2005, we paid $571,994, $836,484 and $823,827, respectively, pursuant to these leases. The lease agreements were in place before the Acquisition in November 2003. We believe the terms of these lease agreements are similar to what would have been obtained from an unaffiliated third party.

We were party to a voting agreement, dated November 26, 2003, with affiliates of the sponsors that terminated upon the completion of our initial public offering.

Index to Financial Statements

We have entered into a letter agreement with each sponsor pursuant to which we have engaged such sponsor to provide its expertise and advice to us for no fee, which is in its interest because of its investment in us. In order for the sponsors to provide such advice, we will

All the foregoing rights are subject to customary confidentiality requirements and subject to security clearance requirements imposed by applicable government authorities.

All holders of our common shares who are also our employees or employees of any of our subsidiaries were parties to an employee shareholders agreement. All other holders of our common shares were parties to an investor shareholders agreement. Both the employee shareholders agreement and the investor shareholders agreement terminated upon the completion of our initial public offering.

We are party to a registration rights agreement with certain of our shareholders, including affiliates of each of the sponsors, Paribas North America, Inc. and Mr. William Oehmig, one of our directors. After our initial public offering, the shareholders party to the agreement and their permitted transferees are entitled, subject to certain limitations, to include their common shares in a registration of common shares we initiate under the Securities Act of 1933, as amended. In addition, after the 120th day following an initial public offering of the common shares, any one or more shareholders party to the agreement has the right to require us to effect the registration of all or any part of such shareholders’ common shares under the Securities Act, referred to as a “demand registration,” so long as the amount of common shares to be registered has an aggregate fair market value of at least US$5.0 million and, at such time, the SEC has ordered or declared effective fewer than four demand registrations initiated by us pursuant to the registration rights agreement. In the event the aggregate number of common shares which the shareholders party to the agreement request us to include in any registration, together, in the case of a registration we initiate, with the common shares to be included in such registration, exceeds the number which, in the opinion of the managing underwriter, can be sold in such offering without materially affecting the offering price of such shares, the number of shares of each shareholder to be included in such registration will be reduced pro rata based on the aggregate number of shares for which registration was requested. The shareholders party to the agreement have the right to require, after four demand registrations, one registration in which their common shares will not be subject to pro rata reduction with others entitled to registration rights.

Index to Financial Statements

We may opt to delay the filing of a registration statement required pursuant to any demand registration for:

Our right to delay the filing of a registration statement if we possess information that we deem advisable not to disclose does not obviate any disclosure obligations which we may have under the Exchange Act or other applicable laws; it merely permits us to avoid filing a registration statement if our management believes that such a filing would require the disclosure of information which otherwise is not required to be disclosed and the disclosure of which our management believes is premature or otherwise inadvisable.

The registration rights agreement contains customary provisions whereby we and the shareholders party to the agreement indemnify and agree to contribute to each other with regard to losses caused by the misstatement of any information or the omission of any information required to be provided in a registration statement filed under the Securities Act. The registration rights agreement requires us to pay the expenses associated with any registration other than sales discounts, commissions, transfer taxes and amounts to be borne by underwriters or as otherwise required by law. We believe the registration rights agreement, though not negotiated on an arm’s length basis, is on terms comparable to other similar agreements.

The Series B preferred shares were initially issued by the pre-amalgamated North American Energy Partners Inc. for cash proceeds of $7.5 million on May 19, 2005 to investment entities controlled by the sponsors. The pre-amalgamated North American Energy Partners Inc. subsequently offered Series B preferred shares to each of our then-existing common shareholders, which included a number of our directors and employees, on a pro rata basis with their share ownership in us. A total of $0.9 million of Series B preferred shares were sold in this subsequent sale, and the proceeds were used to repurchase a like amount of Series B preferred shares from the sponsors. All such Series B preferred shares were issued or repurchased, as the case may be, at a price of $100 per share. On June 15, 2005, the Series B preferred shares were split 10-for-1. Each of the selling shareholders, except Perry Luxco S.A.R.L., held Series B preferred shares. In connection with the Reorganization, each holder of Series B preferred shares received 100 NACG Holdings Inc. common shares for each Series B preferred share held. Pursuant to this conversion, the investment entities controlled by the indicated sponsors received the following number of common shares in exchange for their Series B preferred shares:

For additional information on the Series B preferred shares, refer to note 17(a)(iii) in our consolidated financial statements included elsewhere in this prospectus.

In March 2006, one of our directors was issued 20,000 common shares of NACG Holdings Inc. and 81 Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. In December 2005,

Index to Financial Statements

three of our officers were issued an aggregate of 40,000 common shares of NACG Holdings Inc. and an aggregate of 163 Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. In July 2004, one of our directors was issued 40,000 common shares of NACG Holdings Inc., and another of our directors was issued 20,000 common shares of NACG Holdings Inc. in August 2004. All such common shares of NACG Holdings Inc. were issued at $5 per share and all such Series B preferred shares of the pre-amalgamated North American Energy Partners Inc. were issued at $100 per share. See “Business—Reorganization and Initial Public Offering.”

Index to Financial Statements

The following table presents information regarding the beneficial ownership of our common shares based on information available to us as of July 30, 2007, by:

As of July 27, 2007, we had 35,752,060 voting common shares and no non-voting common shares outstanding. For purposes of this section, “common shares” refers only to the voting common shares. Except as otherwise indicated in the footnotes to the table, each of the beneficial owners listed has, to our knowledge, sole voting and investment power with respect to the indicated common shares. Except as otherwise indicated, the address of each of the beneficial owners is c/o North American Energy Partners Inc., Zone 3, Acheson Industrial Area, 2-53016 Highway 60, Acheson, Alberta, T7X 5A7, Canada.

The amounts and percentages of shares beneficially owned are reported on the basis of SEC regulations governing the determination of beneficial ownership of securities. Under SEC rules, a person is deemed to be a “beneficial owner” of a security if that person has or shares voting power or investment power, which includes the power to dispose of or to direct the disposition of such security. A person is also deemed to be a beneficial owner of any securities of which that person has a right to acquire beneficial ownership within 60 days. Securities that can be so acquired are deemed to be outstanding for purposes of computing such person’s ownership percentage, but not for purposes of computing any other person’s percentage. Under these rules, more than one person may be deemed to be a beneficial owner of the same securities and a person may be deemed to be a beneficial owner of securities as to which such person has no economic interest.

Index to Financial Statements

Unless otherwise noted, each of the beneficial owners named in the following table is also the shareholder of record with respect to such shares.

Index to Financial Statements

We entered into an amended and restated credit agreement dated as of June 7, 2007 with a syndicate of lenders that provides us with a $125.0 million revolving credit facility. The following is a summary of certain provisions of the revolving credit facility.

General. Our revolving credit facility provides for an original principal amount of up to $125.0 million under which revolving loans may be made and under which letters of credit may be issued. The facility will mature on June 7, 2010, subject to possible extension.

Security. The credit facility is secured by a first priority lien on substantially all of our and our subsidiaries’ existing and after-acquired property (tangible and intangible), including, without limitation, accounts receivable, inventory, equipment, intellectual property and other personal property, and real property, whether owned or leased, and a pledge of the shares of our subsidiaries, subject to various exceptions.

Interest rates and fees. The facility bears interest on each prime loan at variable rates based on the Canadian prime rate plus the applicable pricing margin (as defined in the credit agreement). Interest on U.S. base rate loans is paid at a rate per annum equal to the U.S. base rate plus the applicable pricing margin. Interest on prime and U.S. base rate loans is payable monthly in arrears and computed on the basis of a 365- or 366-day year, as the case may be. Interest on Libor loans is paid during each interest period at a rate per annum, calculated on a 360-day year, equal to the Libor rate with respect to such interest period plus the applicable pricing margin. A stamping fee equal to the applicable pricing margin, calculated on the principal amount at maturity, is paid upon the acceptance by a lender of a bankers’ acceptance. Letters of credit are subject to a fee payable quarterly in arrears, calculated at a rate per annum equal to the applicable pricing margin and on the average daily amount of such letters of credit for the number of days such letters of credit were outstanding. Letters of credit are also subject to customary fees and expenses and a fronting fee equal to the greater of $500 or 0.10% per annum on the amount of such letter of credit paid quarterly in arrears. Standby fees are calculated at a rate per annum equal to the applicable pricing margin on the amount by which the amount of the outstanding principal owing to each lender under the credit facility for each day is less than the commitment of such lender and accrue daily from the first day to the last day of each fiscal quarter. In each case, the applicable pricing margin depends on our credit rating. Interest rates are increased by 2% per annum in excess of the rate otherwise payable on any amount not paid when due.

Prepayments and commitment reductions. The credit facility may be prepaid in whole or in part without penalty, except for bankers’ acceptances, which will not be prepayable prior to their maturity. However, the credit facility requires prepayments under various circumstances, such as: (i) 100% of the net cash proceeds of certain asset dispositions, (ii) 100% of the net cash proceeds from our issuance of equity (unless the use of such securities proceeds is otherwise designated by the applicable offering document) and (iii) 100% of all casualty insurance and condemnation proceeds, subject to exceptions.

Covenants. The credit facility contains restrictive covenants limiting our ability, and the ability of our subsidiaries to, without limitation and subject to various exceptions:

Index to Financial Statements

Under the credit facility, we are required to satisfy certain financial covenants, including a current ratio, a senior leverage ratio and an interest coverage ratio.

Events of default. The credit facility contains customary events of default, including, without limitation, failure to make payments when due, defaults under other agreements or instruments of indebtedness, noncompliance with covenants, breaches of representations and warranties, bankruptcy, judgments in excess of specified amounts, invalidity of loan documents, impairment of security interest in collateral, and changes of control.

General. On November 26, 2003, we issued an aggregate of US$200.0 million of 8³/4% senior unsecured notes pursuant to an indenture among us, the subsidiary guarantors and Wells Fargo Bank, N.A., as trustee. These notes will mature on December 1, 2011. Interest on these notes accrues at 8³/4% per annum and is payable in arrears on June 1 and December 1 of each year. All of our subsidiaries jointly and severally guarantee the 8³/4% senior notes.

Redemption and Repurchase. We may redeem some or all of the 8³/4% senior notes at any time on or after December 1, 2007, at specified redemption prices. We may redeem up to 35% of the original aggregate principal amount of the 8³/4% senior notes in the event of certain equity sales at any time on or after December 1, 2007 at specified redemption prices. We may redeem all but not part of the notes in the event of various changes in the laws affecting withholding taxes. We are not required to make mandatory redemption or sinking fund payments with respect to the 8³/4% senior notes. We will be required to offer to repurchase the 8³/4% senior notes from holders if we undergo a change of control or sell our assets in specified circumstances. Neither the Reorganization nor this offering constitutes a change of control under the indenture.

Covenants. The indenture governing the 8³/4% senior notes restricts, among other things, our ability to pay dividends, redeem capital stock or prepay certain subordinated debt; incur additional debt or issue preferred stock; grant liens; merge, consolidate or transfer substantially all of our assets; enter into certain transactions with affiliates; impose restrictions on any subsidiary’s ability to pay dividends or transfer assets to us; enter into certain sale and leaseback transactions; and permit subsidiaries to guarantee debt. All of these restrictions are subject to customary exceptions.

We have entered into three separate International Swap Dealer Association—Master Agreements, one with BNP Paribas, as counterparty, dated November 23, 2003, one with HSBC Bank Canada, as counterparty, dated March 26, 2004 and one with CIBC, as counterparty, dated August 9, 2006. These agreements are collectively referred to as the swap agreements. Pursuant to the swap agreements, we have and may enter into one or more interest rate or currency swap transactions governed by the terms of the swap agreements and the confirmations issued by the counterparty in respect of each transaction. The swap agreements contain customary representations and warranties, covenants and events of default. Specifically, each swap agreement contains a provision that an event of default under our existing credit agreement will constitute an event of default under such swap agreement and that the counterparty will be entitled to terminate the swap agreement if our payment obligations to the counterparty cease to be secured pari passu with the obligations under the credit agreement. As of March 30, 2007, the liability, measured at fair value, associated with the swap agreements was approximately $60.9 million.

Index to Financial Statements

Our articles of amalgamation authorize us to issue an unlimited number of voting common shares and an unlimited number of non-voting common shares. We have 35,752,060 voting common shares outstanding and no non-voting common shares outstanding.

Some of the statements contained herein are summaries of the material provisions of our articles of amalgamation relating to dividends, distribution of assets upon dissolution, liquidation or winding up and are qualified in their entirety by reference to our articles of amalgamation.

The shares being offered in this offering are our voting common shares. Unless the context requires otherwise, references in this section to “common shares” are to our voting common shares only. Each voting common share has an equal and ratable right to receive dividends to be paid from our assets legally available therefor when, as and if declared by our board of directors. Our ability to declare dividends is restricted by the terms of the indenture that governs our 8³/4% senior notes. See “Description of Certain Indebtedness.”

In the event of our dissolution, liquidation or winding up, the holders of common shares are entitled to share equally and ratably in the assets available for distribution after payments are made to our creditors. Holders of common shares have no preemptive rights or other rights to subscribe for our securities. Each common share entitles the holder thereof to one vote in the election of directors and all other matters submitted to a vote of shareholders, and holders of common shares have no rights to cumulate their votes in the election of directors.

Regulatory requirements applicable to affiliates of Paribas North America, Inc. limit the amount of our voting shares it may own. Therefore, in addition to our voting common shares that it owns, it also owned all of our outstanding non-voting common shares, which it acquired on November 26, 2003. Except as prescribed by Canadian law and except in limited circumstances, the non-voting common shares have no voting rights but are otherwise identical to the voting common shares in all respects. The non-voting common shares are convertible into voting common shares on a share-for-share basis at the option of the holder if it transfers, sells or otherwise disposes of the converted voting common shares (1) in a public offering of our voting common shares; (2) to a third party that, prior to such sale, controls us; (3) to a third party that, after such sale, is a beneficial owner of not more than 2% of our outstanding voting shares; (4) in a transaction that complies with Rule 144 under the Securities Act; or (5) in a transaction approved in advance by regulatory bodies. Paribas North America, Inc. converted all of the non-voting common shares it owned into voting common shares in connection with this offering.

Other Provisions of Our Articles of Incorporation and By-Laws and the Canadian Business Corporations Act

Our articles of incorporation do not contain stated objects or purposes and do not place any limitations on the business that we may carry on.

Power to vote on matters in which a director is materially interested. The Canada Business Corporations Act, or CBCA, states that a director must disclose, in accordance with the provisions of the CBCA, the nature and extent of an interest the director has in a material contract or material transaction, whether made or proposed,

Index to Financial Statements

with us, if the director is a party to the contract or transaction, is a director or an officer, or an individual acting in a similar capacity, of a party to the contract or transaction or has a material interest in a party to the contract or transaction.

A director who holds a disclosable interest in respect of any contract or transaction into which we have entered or propose to enter shall not vote on any directors’ resolution to approve that contract or transaction, unless the contract or transaction:

Borrowing power exercisable by directors. Our articles of incorporation authorize our board of directors, on our behalf, to borrow money on our credit, issue debt, provide guarantees or mortgage, pledge or otherwise create a security interest in our property without authorization of our shareholders.

Directors’ power to determine the compensation of directors. The CBCA provides that the remuneration of our directors, if any, may be determined by our directors subject to the articles of incorporation and by-laws and any agreement among all of the shareholders restricting the powers of the directors. That remuneration may be in addition to any salary or other remuneration paid to any of our officers or employees who are also directors.

Retirement or non-retirement of directors under an age limit requirement. Neither our articles of incorporation nor the CBCA impose any mandatory age-related retirement or non-retirement requirement for our directors.

Number of shares required to be owned by a director. Neither our articles of incorporation nor the CBCA provide that a director is required to hold any of our shares as a qualification for holding his or her office.

Our shareholders can authorize the alteration of our articles of incorporation to create or vary the special rights or restrictions attached to any of our shares by passing a special resolution. However, a right or special right attached to any class or series of shares may not be prejudiced or interfered with unless the shareholders holding shares of the class or series to which the right or special right is attached consent by a special separate resolution. A special resolution means a resolution passed by: (a) a majority of not less than two-thirds of the votes cast by the applicable class or series of shareholders who are entitled to vote in person or by proxy at a general meeting, or (b) a resolution consented to in writing by all of the shareholders holding the applicable class or series of shares.

We are required to hold an annual general meeting of our shareholders at least once every calendar year at a time and place determined by our board of directors, provided that the meeting must not be called later than 15 months after the preceding annual general meeting, although, as a result of applicable rules of the stock exchange on which we may be listed, the meeting must be held no later than six months after the end of our fiscal year. A meeting of our shareholders may be held anywhere in Canada, or provided the shareholders agree, anywhere outside of Canada.

Our board, the chairman of the board or the president may, at any time, call a special meeting of our shareholders.

Index to Financial Statements

A notice convening a meeting of shareholders, specifying the date, time and location of the meeting and, where a meeting is to consider special business, the general nature of the special business, must be given to shareholders not less than 21 days nor more than 60 days prior to the meeting, although, as a result of applicable securities rules, the time for notice is effectively longer. Under the CBCA, shareholders entitled to notice of a meeting may waive or reduce the period of notice for that meeting, provided applicable securities rules are met. The accidental omission to send notice of any meeting of shareholders to, or the non-receipt of any notice by, any person entitled to notice does not invalidate any proceedings at that meeting.

A quorum for general meetings is one person present and being, or representing by proxy, shareholders holding in the aggregate not less than a majority of the outstanding shares entitled to be voted at the meeting. If a quorum is present at the opening of any meeting of shareholders, the shareholders present or represented may proceed with the business of the meeting notwithstanding that a quorum is not present throughout the meeting. If a quorum is not present at the opening of any meeting of shareholders, the shareholders present or represented may adjourn the meeting to a fixed time and place but may not transact any other business.

Holders of our voting common shares are entitled to attend general meetings of our shareholders. Except as otherwise provided with respect to our non-voting common shares, and except as otherwise required by law, the holders of our non-voting common shares are not entitled as a class to receive notice of, attend or vote at any meetings of our shareholders.

Neither our articles of incorporation nor our by-laws contain any change of control limitations with respect to a merger, acquisition or corporate restructuring that involves us.

Neither our articles of incorporation nor our by-laws provide for any ownership threshold above which shareholder ownership must be disclosed.

We are party to a registration rights agreement with certain of our common shareholders. See “Related Party Transactions.”

CIBC Mellon Trust Company, located in Calgary, Alberta, and Mellon Financial Services LLC, located in Jersey City, New Jersey, are co-transfer agents and registrars for our common shares.

Limitations on the ability to acquire and hold our common shares may be imposed by the Competition Act (Canada). This legislation permits the Commissioner of Competition of Canada, or Commissioner, to review any acquisition of a significant interest in us. This legislation grants the Commissioner jurisdiction, for up to three years, to seek a remedial order, including an order to prohibit the acquisition, from the Canadian Competition Tribunal, which order may be granted where the Competition Tribunal finds that the acquisition substantially prevents or lessens, or is likely to substantially prevent or lessen, competition in any market in Canada.

Index to Financial Statements

This legislation also requires any person or persons who intend to acquire more than 20% of our common shares or, if such person or persons already own 20% or more of our common shares prior to the acquisition, more than 50% of our common shares, to file a notification with the Canadian Competition Bureau if certain financial thresholds are exceeded. Where a notification is required, the legislation prohibits completion of the acquisition until the expiration of a statutory waiting period, unless the Commissioner provides written notice that he or she does not intend to challenge the acquisition.

The Investment Canada Act (Canada), or Investment Act, requires each “non-Canadian,” as determined in the Investment Act, who commences a new business activity in Canada or acquires control of an existing Canadian business, where the establishment or acquisition of control is not a reviewable transaction by Canadian authorities under the Investment Act, to file a notification in prescribed form. Subject to certain exceptions, a transaction that is reviewable under the Investment Act may not be implemented until an application for review has been filed and the responsible Minister of the federal cabinet has determined that the investment is likely to be of “net benefit to Canada” taking into account the factors, where relevant, set out in the Investment Act. An investment in our common shares by a non-Canadian would be reviewable under the Investment Act if it were an investment to acquire control of us and the value of our assets was $5.0 million or more as determined pursuant to the Investment Act. The Investment Act provides for special review thresholds for non-Canadians who qualify as “WTO investors” under the Investment Act. The Investment Act sets out rules to determine who is a WTO investor. A WTO investor is a defined term in the Investment Act and would include, for example, nationals or governments of a World Trade Organization member country or entities controlled by such individuals or governments. Under the Investment Act, an investment in our common shares by a non-Canadian who is a “WTO investor” (as defined in the Investment Act) would be reviewable only if it were an investment to acquire control of us pursuant to the Investment Act and the value of our assets (as determined pursuant to the Investment Act) was equal to or greater than a specified amount, which varies annually. The specified threshold amount is $281 million in 2007 (as determined under the Investment Act). This threshold is subject to an annual adjustment pursuant to the Investment Act.

The Investment Act contains various rules to determine if there has been an acquisition of control. For example, for purposes of determining whether an investor has acquired control of a corporation by acquiring common shares, the following general rules apply: the acquisition of a majority of the voting interests or the undivided ownership interests in the voting shares of an entity that is a corporation is deemed to be acquisition of control of that entity; the acquisition of less than a majority, but one-third or more, of the voting shares of a corporation or of an equivalent undivided ownership interest in the voting shares of the corporation is presumed to be acquisition of control of that corporation unless it can be established that, on the acquisition, the corporation is not controlled in fact by the acquiror through the ownership of voting shares; and the acquisition of less than one-third of the voting shares of a corporation or of an equivalent undivided ownership interest in the voting shares of the corporation is deemed not to be acquisition of control of that corporation. Certain transactions in relation to our common shares would be exempt from review from the Investment Act, including, for example:

The foregoing provisions of the Competition Act and the Investment Act could prevent or delay an acquisition of our company by a third party or other transaction that our shareholders may consider desirable.

Index to Financial Statements

The foregoing summary of certain provisions of the Competition Act and the Investment Act is not complete and is qualified in its entirety by reference to the Competition Act and Investment Act.

There is no law, governmental decree or regulation in Canada that restricts the export or import of capital, or that would affect the remittance of dividends (if any) or other payments by us to non-resident holders of our common shares, other than withholding requirements under applicable tax laws.

Index to Financial Statements

The shares sold in this offering will be freely tradable without restriction or further registration under the Securities Act, except that any shares held by our “affiliates” as that term is defined in Rule 144 promulgated under the Securities Act may only be sold in compliance with the limitations described below. After completion of this offering, the selling shareholders collectively will continue to own 8,264,427 shares, all of which will be “restricted” under Rule 144. The common shares under contractual lock-up agreements with us may first be sold at various times after the expiration of the lock-up period described below.

In general, under Rule 144 as currently in effect, if one year has elapsed since the date of acquisition of restricted stock from us or any of our affiliates, and we have been a reporting company under the Exchange Act for at least 90 days, the holder of such restricted stock can sell the shares, provided that the number of shares sold by such person within any three-month period does not exceed the greater of:

Sales under Rule 144 are also subject to certain manner of sale provisions, notice requirements and the availability of certain current public information about us. If two years have elapsed since the date of acquisition of restricted stock from us or any of our affiliates and the holder is not one of our affiliates at any time during the three months preceding the proposed sale, such person can sell such shares in the public market under Rule 144(k) without regard to the volume limitations, manner of sale provisions, public information requirements or notice requirements.

We have agreed that we will not offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, or file with the SEC a registration statement under the Securities Act or a prospectus with a Canadian securities regulatory authority, relating to any of our common shares or securities convertible into or exchangeable or exercisable for any common shares, or publicly disclose the intention to make any offer, sale, pledge, swap, hedge, disposition or filing, without the prior written consent of Credit Suisse Securities (USA) LLC and UBS Securities LLC for a period of 90 days after the date of this prospectus, subject to extension.

Our executive officers and directors, the selling shareholders and other sponsors have agreed that they will not offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, any of our common shares or securities convertible into or exchangeable or exercisable for any common shares, enter into a transaction that would have the same effect, or enter into any swap, hedge or other arrangement that transfers, in whole or in part, any of the economic consequences of ownership of our common shares or publicly disclose the intention to make any offer, sale, pledge or disposition, or enter into any transaction, swap, hedge or other arrangement, without, in each case, the prior written consent of Credit Suisse Securities (USA) LLC and UBS Securities LLC for a period of 90 days after the date of this prospectus, subject to extension.

Any of our directors, officers, employees, advisors or consultants who held options to purchase common shares under a written compensatory plan or contract, such as our share option plan, prior to the effective date of the registration statement of which this prospectus is a part may be entitled to rely on the resale provisions of Rule 701. Rule 701 permits affiliates to sell their Rule 701 shares under Rule 144 without complying with the holding period requirements of Rule 144. Rule 701 further provides that non-affiliates may sell such shares under Rule 144 without having to comply with the holding period, public information, volume limitation or notice

Index to Financial Statements

provisions of Rule 144. All holders of Rule 701 shares are required to wait until 90 days after the effective date of the registration statement of which this prospectus is a part before selling such shares. However, shares held by our directors and officers are subject to lock-up agreements and will only become eligible for sale upon the expiration of the lock-up period applicable to them, unless Credit Suisse Securities (USA) LLC and UBS Securities LLC release all or a portion of any Rule 701 shares subject to the lock-up.

The sale of any of our common shares in Canada which constitutes a “control distribution” under Canadian securities law (generally a sale by a person or a group of persons holding more than 20% of our outstanding voting securities) will be subject to restrictions under applicable Canadian securities laws, unless the sale is qualified under a prospectus filed with Canadian securities regulatory authorities or if prior notice of the sale is filed with the Canadian securities regulatory authorities at least seven days before any sale and there has been compliance with certain other requirements and restrictions regarding the manner of sale, payment of commissions, reporting and availability of current public information about us.

Index to Financial Statements

The following discussion addresses the material U.S. federal income tax considerations relating to the purchase, ownership and disposition of our common shares. This discussion is based on the provisions of the Internal Revenue Code of 1986, as amended, the applicable treasury regulations promulgated under the Internal Revenue Code, judicial authority and current administrative rulings and practice. All of these authorities may change without notice, possibly on a retroactive basis. This summary deals only with holders that will hold common shares as capital assets within the meaning of Section 1221 of the Internal Revenue Code. It does not address tax considerations applicable to investors that may be subject to special tax rules, such as banks and other financial institutions; tax-exempt organizations; persons subject to alternative minimum tax; partnerships and other pass-through entities (as determined for U.S. federal income tax purposes); insurance companies; traders or dealers in securities or currencies; custodians, nominees or similar financial intermediaries holding common shares for others; or persons that will hold common shares as a position in a hedging transaction, straddle or conversion transaction for U.S. federal income tax purposes. This summary does not discuss the tax consequences of any conversion of currency into or out of the U.S. dollar as such a conversion relates to the purchase, ownership or disposition of the common shares, nor does it discuss the consequences of any U.S. federal estate and gift tax laws or state, local or foreign tax laws (other than those included under “—Material Canadian Income Tax Considerations”). If a partnership holds our common shares, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership. If you are a partner of a partnership holding our common shares you should consult your tax advisors. We have not sought any ruling from the Internal Revenue Service, or the IRS, with respect to the statements made and the conclusions reached in the following summary. There can be no assurance that the IRS will agree with such statements and conclusions.

THE SUMMARY OF MATERIAL U.S. INCOME TAX CONSIDERATIONS IS INTENDED TO PROVIDE ONLY A GENERAL SUMMARY AND IS NOT INTENDED TO BE A COMPLETE ANALYSIS OR DESCRIPTION OF ALL POTENTIAL U.S. FEDERAL INCOME TAX CONSEQUENCES. TAX LAWS ARE VERY COMPLICATED. PROSPECTIVE INVESTORS IN THE COMMON SHARES SHOULD CONSULT THEIR OWN TAX ADVISORS WITH RESPECT TO THE APPLICATION OF THE U.S. FEDERAL INCOME TAX LAWS TO THEIR PARTICULAR SITUATIONS AS WELL AS ANY TAX CONSEQUENCES ARISING UNDER THE LAWS OF ANY STATE, LOCAL OR FOREIGN TAXING JURISDICTION OR UNDER ANY APPLICABLE TAX TREATY.

A U.S. Holder is the beneficial owner of a common share that, for U.S. federal income tax purposes, is:

A non-U.S. Holder is a beneficial owner of a common share who is not a U.S. Holder.

A U.S. Holder that receives a distribution with respect to our common shares generally must include the amount in gross income as a dividend to the extent attributable to our current and accumulated earnings and

Index to Financial Statements

profits (as determined under U.S. federal income tax principles). If the distribution (or a portion thereof) is not a dividend because it exceeds our current and accumulated earnings and profits, the distribution will be treated first as a tax-free return of capital and reduce (but not below zero) the adjusted tax basis of the U.S. Holder’s shares. If the distribution exceeds the adjusted tax basis, the remainder will be taxed as capital gain (see “Sale of Shares” below).

Dividends received by non-corporate U.S. Holders on or before December 31, 2010, from a qualified foreign corporation are taxed at the same rates as long-term capital gains. A “qualified foreign corporation” includes a foreign corporation that is eligible for the benefits of a comprehensive income tax treaty with the United States. Since we are eligible for the benefits of the tax treaty between Canada and the United States, and the treaty has been determined to be a comprehensive income tax treaty, we are a “qualified foreign corporation.”

U.S. Holders may deduct any Canadian tax withheld from distributions in computing their U.S. federal taxable income. Alternatively, a U.S. Holder may claim a credit against U.S. federal income tax liability (see “Foreign Tax Credit” below). Corporate U.S. Holders generally will not be allowed a dividends-received deduction with respect to any dividends from us.

Generally, dividends to a U.S. Holder will be treated as passive income (or “passive category income” for taxable years beginning after December 31, 2006) for foreign tax credit purposes. Subject to some limitations, a U.S. Holder may elect to claim a credit against its U.S. federal income tax liability (in lieu of a deduction) for Canadian withholding tax deducted from our distributions. The credit is limited to U.S. federal income tax attributable to a U.S. Holder’s passive income from foreign sources. Since we are a qualified foreign corporation for non-corporate U.S. Holders, our dividends qualify for taxation at the same preferential rates that apply to long-term capital gains. Consequently, the dividend amount that would otherwise be treated as received from foreign sources is reduced by multiplying the dividend by a fraction, the numerator of which is the preferential capital gains rate and the denominator of which is the ordinary income tax rate applicable to the U.S. Holder. The effect of this reduction is to reduce the federal income attributable to foreign source income against which the credit may be claimed. Canadian withholding taxes that cannot be claimed as a credit in the year paid may be carried back to the preceding year and forward ten years, subject to the same limitations.

A U.S. Holder generally will recognize capital gain or loss on the sale of our shares equal to the difference between: (a) the amount of cash plus the fair market value of any property received for the shares and (b) the U.S. Holder’s adjusted tax basis in the shares. The gain or loss will be treated as capital gain or loss from the U.S. sources. It will be long-term capital gain or loss if the U.S. Holder has held the shares for more than 12 months. The top marginal rate applicable to net long-term capital gain for a non-corporate U.S. Holder is 15%. There is no preferential long-term gain rate for corporate U.S. Holders. Any capital gain that is not long-term capital gain is short-term capital gain and is taxed at ordinary income rates. Deduction of capital losses is subject to significant limitations.

U.S. Holders that own stock in a foreign corporation that is classified as a “controlled foreign corporation” (“CFC”) may be subject to current taxation on certain earnings of the CFC. A CFC is a foreign corporation more than 50% of whose total voting power or value is owned by U.S. shareholders. For these purposes, a U.S. shareholder is any person or entity that owns, directly or indirectly, 10% or more of the total combined voting power of the foreign corporation. Based on the expected distribution of our common shares among U.S. Holders and non-U.S. Holders, we do not expect to be classified as a CFC. However, future ownership

Index to Financial Statements

changes could cause us to become a CFC. Potential U.S. Holders are advised to consult their tax advisors concerning the potential application of the CFC rules to their particular circumstances.

Non-U.S. Holders should not be subject to U.S. federal income tax with respect to dividends and proceeds received on the sale, exchange or redemption of our common shares.

In general, holders may be subject to information reporting and backup withholding at a rate of 28% with respect to dividends and proceeds received on the sale, exchange, or redemption of a common share. The information reporting and backup withholding requirements discussed below generally do not apply to payments to corporations, whether domestic or foreign.

An individual U.S. Holder generally will be subject to backup withholding on payments or proceeds received through a U.S. broker or nominee unless such U.S. Holder provides its taxpayer identification number to the payor on a properly executed Internal Revenue Service Form W-9 or other similar form and the IRS has not notified the payor that backup withholding is required for such U.S. Holder.

A non-U.S. Holder generally will be subject to backup withholding on payments or proceeds received through a U.S. broker or nominee unless such non-U.S. Holder certifies its foreign status by providing a properly executed Internal Revenue Service Form W-8 BEN, W-8 IMY, W-8 ECI or W-8EXP.

Backup withholding is not an additional tax, and any amount withheld under the backup withholding rules will be creditable against the U.S. federal tax liability of such holder and may give rise to a refund upon furnishing the required information to the Internal Revenue Service.

The following summarizes the main Canadian federal income tax consequences applicable to a holder that acquires common shares pursuant to this offering and who, at all times for purposes of the Income Tax Act (Canada) (the “Act”), is the beneficial owner of the common shares, holds the common shares as capital property, deals at arm’s length with us and with the selling shareholders, is not affiliated with us or a selling shareholder, is not a resident and is not deemed to be a resident of Canada during any taxation year in which it owns the common shares, and does not use or hold the common shares in the course of carrying on, or otherwise in connection with, a business in Canada (a “non-Canadian holder”). This summary does not deal with special situations, such as the particular circumstances of traders or dealers, limited liability companies, partnerships, tax exempt entities, insurers or financial institutions.

This summary is based on the relevant provisions of the Act and the regulations thereunder (the “Regulations”) and our Canadian counsel’s understanding of the published administrative and assessing practices of the Canada Revenue Agency as of the date hereof. It also takes into account specific proposals to amend the Act and the Regulations publicly announced by the Minister of Finance (Canada) prior to the date hereof but there is no certainty that such proposals will be enacted in the form proposed, if at all. This summary does not otherwise take into account or anticipate any changes in law, whether by way of legislative, judicial or governmental action or interpretation, nor does it address any provincial, territorial or foreign income tax considerations.

In this summary we do not purport to address all tax considerations that may be important to a particular non-Canadian holder, in light of the holder’s circumstances, concerning the consequences of acquiring, holding or disposing of common shares. We encourage non-Canadian holders to consult their own tax advisors having regard to their particular circumstances.

Index to Financial Statements

A non-Canadian holder will generally be subject to a 25% Canadian withholding tax on dividends we pay or credit, or are deemed to pay or credit, on the common shares. This rate may be reduced under the provisions of an applicable income tax convention between Canada and the non-Canadian holder’s country of residence. A non- Canadian holder who is resident in the United States and entitled to the benefit of the Canada-United States Income Tax Convention (1980) (the “U.S. Treaty”) will generally be entitled to a 15% rate of withholding tax for dividends.

A non-Canadian holder will not be subject to tax under the Act in respect of any capital gain realized on the disposition of common shares provided that such common shares are not “taxable Canadian property” (as defined in the Act) at the time of the disposition.

Provided that at the time of a disposition our common shares are listed on a prescribed stock exchange (which includes The New York Stock Exchange and the Toronto Stock Exchange), the common shares will generally not be taxable Canadian property to a non-Canadian holder, unless, at any time during the five year period immediately preceding the disposition, the non-Canadian holder, persons with whom the non-Canadian holder did not deal at arm’s length, or the non-Canadian holder together with such persons, owned 25% or more of our issued shares of any class or series. Notwithstanding the foregoing, a common share may be deemed to be taxable Canadian property in certain other circumstances set out in the Act.

A non-Canadian holder’s taxable capital gain in respect of shares that are taxable Canadian property will be one-half of the amount by which the proceeds of disposition, net of any reasonable costs of disposition, exceed the adjusted cost base of the shares to the holder. The U.S. Treaty provides an exemption from Canadian capital gains tax for a non-Canadian holder who is a resident of the United States for purposes of the U.S. Treaty provided that our common shares do not derive their value principally from real property situated in Canada.

A non-Canadian holder whose shares are taxable Canadian property at the time of a disposition will be required to file a Canadian income tax return for that taxation year, whether or not the holder realizes a taxable capital gain on the disposition or is entitled to an exemption from Canadian tax in respect of such a gain pursuant to an applicable income tax convention.

Index to Financial Statements

Under the terms and subject to the conditions contained in an underwriting agreement dated July 31, 2007, the selling shareholders have agreed to sell to the underwriters named below, for whom Credit Suisse Securities (USA) LLC and UBS Securities LLC are acting as representatives, the following respective numbers of common shares:

The common shares will be offered in the United States and in the provinces and territories of Canada. The common shares will be offered in the United States through Credit Suisse Securities (USA) LLC, UBS Securities LLC, CIBC World Markets Corp. and Jefferies & Company, Inc. and such dealers who are registered to offer the common shares for sale in the United States as may be designated by the underwriters. The common shares will be offered in the provinces and territories of Canada through those underwriters or their affiliates who are registered to offer the common shares in such provinces and territories, including Credit Suisse Securities (Canada), Inc., UBS Securities Canada Inc., and CIBC World Markets Inc., and such other registered dealers as may be designated by the underwriters.

The underwriting agreement provides that the underwriters’ obligation to purchase the common shares depends on the satisfaction of the conditions contained in the underwriting agreement, including that the representations and warranties made by us and the selling shareholders to the underwriters are true, there is no material adverse change in our business or the financial markets and we deliver customary closing documents to the underwriters. The underwriting agreement provides that the underwriters are obligated to purchase all the common shares in the offering if any are purchased, other than those shares covered by the over-allotment option described below. The underwriting agreement also provides that, in the event of a default, the purchase commitments of non-defaulting underwriters may be increased or the offering may be terminated.

The selling shareholders have granted to the underwriters a 30-day option to purchase up to 1,090,253 additional common shares from the selling shareholders on a pro rata basis at the initial public offering price less the underwriting discounts and commissions. The option may be exercised only to cover any over-allotments of common shares.

The public offering price for common shares offered in the United States and elsewhere outside Canada is payable in U.S. dollars, and the public offering price for common shares sold in Canada is payable in Canadian dollars, except as may otherwise be agreed by the underwriters. The Canadian dollar amount is the approximate equivalent of the U.S. dollar amount based on the prevailing U.S. Canadian dollar exchange rate on the date of the underwriting agreement.

The underwriters propose to offer the common shares initially at the public offering price on the cover page of this prospectus and to selling group members at that price less a selling concession of US$0.4590 per share (or C$0.4891 per share for shares sold in Canada). After the offering in the United States and elsewhere outside of Canada, the underwriters may change the public offering price and concession and discount to broker/dealers. In

Index to Financial Statements

Canada, after the underwriters have made a bona fide effort to sell all of the common shares offered in Canada under this prospectus at the public offering price specified above, the offering price may be decreased and thereafter further changed, from time to time, to an amount not greater than the public offering price, and the concession and reallowance may be changed. In the event of a reduction in the public offering price, the compensation realized by the underwriters will be reduced accordingly.

Pursuant to the registration rights agreement, we have the obligation to pay various expenses in connection with this offering by the selling shareholders. We estimate that our out-of-pocket expenses for this offering will be approximately US$1.4 million, consisting of US$10,577 for SEC registration fees, US$32,000 for Canadian securities regulatory authority filing fees, US$450,000 for printing expenses, US$510,000 for legal fees, US$285,000 for accounting fees, US$34,951 for NASD filing fees and US$77,472 for miscellaneous expenses.

The underwriters will not confirm sales to any accounts over which they exercise discretionary authority without first receiving a written consent from those accounts.

We have agreed that we will not offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, or file with the SEC a registration statement under the Securities Act or file with the securities regulatory authorities in Canada a prospectus under applicable securities laws relating to, any common shares or securities convertible into or exchangeable or exercisable for any common shares, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing, without the prior written consent of Credit Suisse Securities (USA) LLC and UBS Securities LLC, for a period of 90 days after the date of this prospectus. However, in the event that either (1) during the last 17 days of the “lock-up” period, we release earnings results or material news or a material event relating to us occurs or (2) prior to the expiration of the “lock-up” period, we announce that we will release earnings results during the 16-day period beginning on the last day of the “lock-up” period, then in either case the expiration of the “lock-up” period will be extended until the expiration of the 18-day period beginning on the date of the release of the earnings results or the occurrence of the material news or event, as applicable, unless Credit Suisse Securities (USA) LLC and UBS Securities LLC waive, in writing, such an extension.

Our directors and executive officers, the selling shareholders and other sponsors have agreed that they will not offer, sell, contract to sell, pledge or otherwise dispose of, directly or indirectly, any common shares or securities convertible into or exchangeable or exercisable for any common shares, enter into a transaction that would have the same effect, or enter into any swap, hedge or other arrangement that transfers, in whole or in part, any of the economic consequences of ownership of our common shares, whether any of these transactions are to be settled by delivery of our common shares or other securities, in cash or otherwise, or publicly disclose the intention to make any offer, sale, pledge or disposition, or to enter into any transaction, swap, hedge or other arrangement, without, in each case, the prior written consent of Credit Suisse Securities (USA) LLC and UBS Securities LLC, for a period of 90 days after the date of this prospectus. However, in the event that either (1) during the last 17 days of the “lock-up” period, we release earnings results or material news or a material event relating to us occurs or (2) prior to the expiration of the “lock-up” period, we announce that we will release earnings results during the 16-day period beginning on the last day of the “lock-up” period, then in either case the expiration of the “lock-up” period will be extended until the expiration of the 18-day period beginning on the date of the release of the earnings results or the occurrence of the material news or event, as applicable, unless Credit Suisse Securities (USA) LLC and UBS Securities LLC waive, in writing, such an extension.

We have been advised by Credit Suisse Securities (USA) LLC and UBS Securities LLC that they have no present intent or arrangement to release any common shares subject to a lock-up and will consider the release of any lock-up on a case-by-case basis. Upon a request to release any common shares subject to a lock-up, Credit Suisse Securities (USA) LLC and UBS Securities LLC would consider the particular circumstances surrounding the request, including but not limited to, the length of time before the lock-up expires, the number of common

Index to Financial Statements

shares requested to be released, the reasons for the request, the possible impact on the market for our common shares and whether the holder of common shares requesting the release is an officer, director or other affiliate of us.

We and the selling shareholders have agreed to indemnify the underwriters against liabilities under the Securities Act and the securities laws of the provinces and territories of Canada or contribute to payments that the underwriters may be required to make in that respect.

Certain of the underwriters and their respective affiliates have in the past and may in the future perform various financial advisory, investment banking and other services for us, our affiliates and our officers in the ordinary course of business, for which they received and will receive customary fees and expenses. As broker-dealers who make a market in debt securities, the underwriters and their respective affiliates, in the ordinary course of their trading and brokerage activities, from time to time may own some of our outstanding debt securities or otherwise trade or effect transactions for their own accounts or the accounts of customers.

CIBC Mellon Trust Company, one of the transfer agents for the common shares, is a 50/50 joint venture between Mellon Financial Corp. and a Canadian chartered bank, which is an affiliate of CIBC World Markets Corp.

We expect that delivery of the common shares will be made against payment therefor on or about the closing date specified on the cover page of this prospectus, which will be the fourth business day following the date of pricing of the common shares (this settlement cycle being referred to as “T+4”). Under Rule 15c6-1 of the SEC under the Exchange Act, trades in the secondary market generally are required to settle in three business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the common shares on the date of pricing will be required, by virtue of the fact that the common shares initially will settle in T+4, to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the common shares who wish to trade the common shares on the date of pricing should consult their own advisor.

In connection with the offering, the underwriters may engage in stabilizing transactions, over-allotment transactions, syndicate covering transactions and penalty bids in accordance with Regulation M under the Exchange Act.

Index to Financial Statements

Pursuant to rules and policy statements of certain Canadian securities regulators, the underwriters may not, at any time during the period ending on the date the selling process for the common shares ends and all stabilization arrangements relating to the common shares are terminated, bid for or purchase our common shares. The foregoing restrictions are subject to certain exceptions including (a) a bid for or purchase of our common shares if the bid or purchase is made through the facilities of the Toronto Stock Exchange in accordance with the Universal Market Integrity Rules of Market Regulation Services Inc., (b) a bid or purchase on behalf of a client, other than certain prescribed clients, provided that the client’s order was not solicited by the underwriter, or if the client’s order was solicited, the solicitation occurred before the commencement of a prescribed restricted period, and (c) a bid or purchase to cover a short position entered into prior to the commencement of a prescribed restricted period. The underwriters may engage in market stabilization or market balancing activities on the Toronto Stock Exchange, where the bid for or purchase of our common shares is for the purpose of maintaining a fair and orderly market in such common shares, subject to price limitations applicable to such bids or purchases. Such transactions, if commenced, may be discontinued at any time.

Subject to the foregoing, in order to facilitate this offering and for a limited period the underwriters may purchase and sell our common shares in the open market. These transactions may include short sales, stabilizing transactions and purchases to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of securities than they are required to purchase in this offering. Stabilizing transactions consist of certain bids or purchases made for the purpose of preventing or retarding a decline in the market price of such securities while this offering is in progress. The underwriters also may impose penalty bids, under which selling concessions allowed to syndicate members or other broker-dealers participating in this offering are reclaimed if common shares previously distributed in this offering are repurchased in connection with stabilization transactions or otherwise. These activities by the underwriters may stabilize, maintain or otherwise affect the market price of our common shares. As a result, the price of our common shares may be higher than the price that might otherwise exist in the open market. If these activities are commenced, they may be discontinued by the underwriters at any time and must be discontinued after a limited period. These transactions may be effected on the New York Stock Exchange, the Toronto Stock Exchange or otherwise.

A prospectus in electronic format may be made available on the web sites maintained by one or more of the underwriters, or selling group members, if any, participating in this offering and one or more of the underwriters participating in this offering may distribute prospectuses electronically. The representatives may agree to allocate a number of shares to underwriters and selling group members for sale to their online brokerage account holders. Internet distributions will be allocated by the underwriters and selling group members that will make internet distributions on the same basis as other allocations.

Other than the prospectus in electronic format, the information on any underwriter’s or selling group member’s website is not part of the prospectus or the registration statement of which this prospectus forms a part, has not been approved or endorsed by us or any underwriter or selling group member in its capacity as underwriter or selling group member and should not be relied upon by investors.

Index to Financial Statements

Our common shares are being offered for sale in those jurisdictions in the United States, Canada, Europe, Asia and elsewhere where it is lawful to make such offers.

Our common shares may not be offered or sold and will not be offered or sold to any persons in the United Kingdom other than persons whose ordinary activities involve them in acquiring, holding, managing or disposing of investments (as principal or as agent) for the purposes of their businesses and in compliance with all applicable provisions of the Financial Services and Markets Act 2000 (“FSMA”) with respect to anything done in relation to our common shares in, from or otherwise involving the United Kingdom.

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a “Relevant Member State”), with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the “Relevant Implementation Date”) our common shares will not be offered to the public in that Relevant Member State prior to the publication of a prospectus in relation to the common shares which has been approved by the competent authority in that Relevant Member State or, where appropriate, approved in another Relevant Member State and notified to the competent authority in that Relevant Member State, all in accordance with the Prospectus Directive, except that it may, with effect from and including the Relevant Implementation Date, make an offer of common shares to the public in that Relevant Member State at any time,

For the purposes of this provision, the expression an “offer of common shares to the public” in relation to any shares in any Relevant Member State means the communication in any form and by any means of sufficient information on the terms of the offer and the common shares to be offered so as to enable an investor to decide to purchase or subscribe the common shares, as the same may be varied in that Relevant Member State by any measure implementing the Prospectus Directive in that Relevant Member State and the expression Prospectus Directive means Directive 2003/71/ EC and includes any relevant implementing measure in each Relevant Member State.

Index to Financial Statements

The underwriters and each of their affiliates have not (i) offered or sold, and will not offer or sell, in Hong Kong, by means of any document, our common shares other than (a) to “professional investors” as defined in the Securities and Futures Ordinance (Cap. 571) of Hong Kong and any rules made under that Ordinance or (b) in other circumstances which do not result in the document being a “prospectus” as defined in the Companies Ordinance (Cap. 32) of Hong Kong or which do not constitute an offer to the public within the meaning of that Ordinance or (ii) issued or had in its possession for the purposes of issue, and will not issue or have in its possession for the purposes of issue, whether in Hong Kong or elsewhere any advertisement, invitation or document relating to our common shares which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to our securities which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” as defined in the Securities and Futures Ordinance and any rules made under that Ordinance. The contents of this document have not been reviewed by any regulatory authority in Hong Kong. You are advised to exercise caution in relation to the offer. If you are in any doubt about any of the contents of this document, you should obtain independent professional advice.

This prospectus or any other offering material relating to our common shares has not been and will not be registered as a prospectus with the Monetary Authority of Singapore, and the shares of common shares will be offered in Singapore pursuant to exemptions under Section 274 and Section 275 of the Securities and Futures Act, Chapter 289 of Singapore (the “Securities and Futures Act”). Accordingly, our common shares may not be offered or sold, or be the subject of an invitation for subscription or purchase, nor may this prospectus or any other offering material relating to our common shares be circulated or distributed, whether directly or indirectly, to the public or any member of the public in Singapore other than (a) to an institutional investor or other person specified in Section 274 of the Securities and Futures Act, (b) to a sophisticated investor, and in accordance with the conditions specified in Section 275 of the Securities and Futures Act or (c) otherwise pursuant to, and in accordance with the conditions of, any other applicable provision of the Securities and Futures Act.

Our common shares will not be offered or sold directly or indirectly in Japan or to, or for the benefit of, any Japanese person or to others, for re-offering or re-sale directly or indirectly in Japan or to any Japanese person, except in each case pursuant to an exemption from the registration requirements of, and otherwise in compliance with, the Securities and Exchange Law of Japan and any other applicable laws and regulations of Japan. For purposes of this paragraph, “Japanese person” means any person resident in Japan, including any corporation or other entity organized under the laws of Japan.

Our common shares may be offered in Switzerland only on the basis of a non-public offering. This prospectus does not constitute an issuance prospectus according to articles 652a or 1156 or the Swiss Federal Code of Obligations or a listing prospectus according to article 32 of the Listing Rules of the Swiss exchange. Our common shares may not be offered or distributed on a professional basis in or from Switzerland and neither this prospectus nor any other offering material relating to shares of our common shares may be publicly issued in connection with any such offer or distribution. The shares have not been and will not be approved by any Swiss regulatory authority. In particular, the shares are not and will not be registered with or supervised by the Swiss Federal Banking Commission, and investors may not claim protection under the Swiss Investment Fund Act.

Index to Financial Statements

Certain legal matters in connection with the common shares being offered will be passed upon for us by Bracewell & Giuliani LLP, Houston, Texas with respect to matters of U.S. law, and by Borden Ladner Gervais LLP, Toronto, Ontario with respect to matters of Canadian law. Certain members of Bracewell & Giuliani LLP own beneficially less than 1% of our common shares. The underwriters have been represented by Cravath, Swaine & Moore LLP, New York, New York and Bennett Jones LLP, Calgary, Alberta. As of the date hereof, the partners, counsel and associates of each of Borden Ladner Gervais LLP and Bennett Jones LLP beneficially own, directly or indirectly, respectively as a group, less than 1% of our common shares.

The consolidated balance sheets of North American Energy Partners Inc. (formerly NACG Holdings Inc.) as at March 31, 2007 and 2006 and the consolidated statements of operations and deficit and cash flows for each of the years in the three-year period ended March 31, 2007 included in this prospectus have been audited by KPMG LLP, Chartered Accountants, as stated in their report appearing in this prospectus.

Our auditors are KPMG LLP, 10125 102^nd Street, N.W., Edmonton, Alberta T5J 3V8.

This prospectus is part of a registration statement, which term includes all amendments thereto, on Form F-1 that we have filed with the SEC under the Securities Act covering the common shares offered by this prospectus. As permitted by the rules and regulations of the SEC, this prospectus omits certain information contained in the registration statement and the exhibits to the registration statement. For further information with respect to us and our common shares, you should refer to the registration statement and to its exhibits and schedules. We make reference in this prospectus to certain of our contracts, agreements and other documents that are filed as exhibits to the registration statement or that are incorporated by reference to prior registration statements or reports. For additional information regarding those contracts, agreements and other documents, please see the exhibits attached to the registration statement or that are incorporated by reference to prior registration statements or reports.

We also file various reports and other information with the SEC. The SEC allows us to incorporate by reference into this prospectus the information we file with it, which means that we can disclose important information to you by referring you to those documents. The information incorporated by reference is an important part of this prospectus. We incorporate by reference the following document:

If any information varies between this prospectus and any document incorporated by reference in this prospectus, you should rely on the information in this prospectus, which shall be deemed to supersede the information contained in the incorporated documents.

You can read the registration statement and the exhibits and schedules filed with the registration statement or any reports, statements or other information we have filed or file, at the SEC Public Reference Room located at 100 F Street, NE, Room 1580, Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information regarding the Public Reference Room and the SEC’s copying charges. The SEC also maintains an Internet site that contains reports, information statements and other material that are filed through the SEC’s Electronic Data Gathering, Analysis and Retrieval (EDGAR) System. This system can be accessed at http://www.sec.gov. You can find reports and other information that we file electronically with the SEC by reference to our corporate name or to our CIK number, 0001368519.

Index to Financial Statements

We are also subject to the informational requirements of the securities commissions in all provinces and territories of Canada. You are invited to read and copy any reports, statements or other information, other than confidential filings, that we file with the Canadian provincial securities commissions. These filings are also electronically available from the Canadian System for Electronic Document Analysis and Retrieval (SEDAR) (http://www.sedar.com), the Canadian equivalent of the SEC’s electronic document gathering and retrieval system. We will furnish our shareholders with annual reports containing consolidated financial statements audited by independent registered chartered accountants.

We will provide a copy of any exhibit incorporated by reference in the registration statement of which this prospectus forms a part, without charge, by written or oral request directed to us at the following address and phone number:

As a foreign private issuer, we are exempt from the rule under the Exchange Act prescribing the furnishing and content of proxy statements to shareholders. Because we are a foreign private issuer, we, our directors and our officers are also exempt from the short swing profit recovery provisions of Section 16 of the Exchange Act.

This prospectus includes industry data and forecasts that we have obtained from publicly available information, various industry publications, other published industry sources and our internal data and estimates.

For example, in this prospectus, information regarding actual and anticipated production, reserves and current and scheduled projects in the Canadian oil sands was obtained from the Alberta Energy and Utilities Board, or EUB, and from the Energy Market Assessment—June 2006, Canada’s Oil Sands: Opportunities and Challenges to 2015—An Update, referred to as the “2006 Energy Market Assessment,” published by the Canadian National Energy Board, or NEB. Information regarding historical capital expenditures in the oil sands was obtained from the Canadian Association of Petroleum Producers, or CAPP.

Index to Financial Statements

Industry publications and other published industry sources generally indicate that the information contained therein was obtained from sources believed to be reliable, but do not guarantee the accuracy and completeness of such information. Although we believe that these publications and reports are reliable, we have not independently verified the data.

Our internal data, estimates and forecasts are based upon information obtained from our customers, trade and business organizations and other contacts in the markets in which we operate and our management’s understanding of industry conditions. Although we believe that such information is reliable, we have not had such information verified by any independent sources.

References to barrels of oil related to the oil sands in this document are quoted directly from source documents and refer to both barrels of bitumen and barrels of bitumen that have been upgraded into synthetic crude oil, which is considered synthetic because its original hydrocarbon mark has been altered in the upgrading process. We understand that there is generally some shrinkage of bitumen volumes through the upgrading process. The shrinkage is approximately 11% according to the NEB. We have not made any estimates or calculations with regard to these volumes and have quoted these volumes as they appeared in the related source documents.

The body of generally accepted accounting principles applicable to us is commonly referred to as “GAAP.” A non-GAAP financial measure is generally defined by the SEC and by the Canadian securities regulatory authorities as one that purports to measure historical or future financial performance, financial position or cash flows, but excludes or includes amounts that would not be so adjusted in the most comparable GAAP measures. In this prospectus, we disclose EBITDA and Consolidated EBITDA, both non-GAAP financial measures. EBITDA is calculated as net income (or loss) before interest expense, income taxes, depreciation and amortization. Consolidated EBITDA is defined as EBITDA, excluding the effects of foreign exchange gain or loss, realized and unrealized gain or loss on derivative financial instruments, non-cash stock-based compensation expense, gain or loss on disposal of plant and equipment and certain other non-cash items included in the calculation of net income (or loss). We believe that EBITDA is a meaningful measure of the performance of our business because it excludes items, such as depreciation and amortization, interest and taxes, that are not directly related to the operating performance of our business. Management reviews EBITDA to determine whether capital assets are being allocated efficiently. In addition, our revolving credit facility requires us to maintain a minimum interest coverage ratio and a maximum senior leverage ratio, which are calculated using Consolidated EBITDA. Non-compliance with these financial covenants could result in our being required to immediately repay all amounts outstanding under our revolving credit facility. EBITDA and Consolidated EBITDA are not measures of performance under Canadian GAAP or U.S. GAAP and our computations of EBITDA and Consolidated EBITDA may vary from others in our industry. EBITDA and Consolidated EBITDA should not be considered as alternatives to operating income or net income as measures of operating performance or cash flows as measures of liquidity. EBITDA and Consolidated EBITDA have important limitations as analytical tools, and you should not consider them in isolation, or as substitutes for analysis of our results as reported under Canadian GAAP or U.S. GAAP.

Index to Financial Statements

The following table sets forth, for the periods indicated, the high, low and average noon buying rates, in each case for the purchase of one Canadian dollar, expressed in U.S. dollars, based on the inverse of the noon buying rate in the city of New York for cable transfers in Canadian dollars as certified for customs purposes by the Federal Reserve Bank of New York. As of July 30, 2007, the noon buying rate was C$1.00 = US$0.9355.

Index to Financial Statements

The following are definitions of certain terms commonly used in our industry and this prospectus.

“Bitumen” means the molasses-like substance that comprises the oil in the oil sands.

“Established reserves” means those reserves recoverable under current technology and present and anticipated economic conditions specifically proved by drilling, testing or production, plus the portion of contiguous recoverable reserves that are interpreted to exist from geological, geophysical or similar information with reasonable certainty.

“Muskeg” means a swamp or bog formed by an accumulation of sphagnum moss, leaves and decayed matter resembling peat.

“Oil sands” means the grains of sand covered by a thin layer of water and coated by heavy oil, or bitumen

“Overburden” means the layer of rocky, clay-like material that covers the oil sands.

“Ultimately recoverable oil reserves” means an estimate of the initial established reserves that will have been developed in an area by the time all exploratory and development activity has ceased, having regard for the geological prospects of that area and anticipated technology and economic conditions. Ultimate recoverable oil reserves include cumulative production, remaining established reserves and future additions through extensions and revisions to existing pools and the discovery of new pools. Ultimate potential can be expressed by the following simple equation: Ultimate potential = initial established reserves + additions to existing pools + future discoveries.

“Upgrading” means the conversion of heavy bitumen into a lighter crude oil by increasing the hydrogen to carbon ratio, either through the removal of carbon (coking) or the addition of hydrogen (hydroprocessing).

Index to Financial Statements

We have audited the consolidated balance sheets of North American Energy Partners Inc. (formerly NACG Holdings Inc.) as at March 31, 2007 and 2006 and the consolidated statements of operations and deficit and cash flows for each of the years in the three-year period ended March 31, 2007. These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with Canadian generally accepted auditing standards. We also conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform an audit to obtain reasonable assurance whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our audit opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of North American Energy Partners Inc. (formerly NACG Holdings Inc.) as of March 31, 2007 and 2006 and the results of its operations and its cash flows for each of the years in the three-year period ended March 31, 2007 in accordance with Canadian generally accepted accounting principles.

As discussed in Note 3(r) to the consolidated financial statements, the Company adopted new accounting pronouncements related to the accounting for stock-based compensation for employees eligible to retire before the vesting date and determining the variability to be considered in applying the variable interest entities standards in 2007.

Canadian generally accepted accounting principles vary in certain significant respects from accounting principles generally accepted in the United States of America. Information relating to the nature and effect of such differences is presented in note 27 to the consolidated financial statements.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

NACG Holdings Inc. (the “Company”) was incorporated under the Canada Business Corporations Act on October 17, 2003. On November 26, 2003, the Company purchased all the issued and outstanding shares of North American Construction Group Inc. (“NACGI”), including subsidiaries of NACGI, from Norama Ltd. which had been operating continuously in western Canada since 1953. The Company had no operations prior to November 26, 2003. The Company undertakes several types of projects including contract mining, industrial and commercial site development, pipeline and piling installations in Canada.

On November 28, 2006, immediately prior to the closing of the initial public offering (“IPO”) of common shares in Canada and the United States (note 2), the Company amalgamated with its wholly-owned subsidiaries, NACG Preferred Corp., and North American Energy Partners Inc. (“NAEPI”). The amalgamated entity was continued as North American Energy Partners Inc. The voting common shares of the new entity, North American Energy Partners Inc., include the shares offered in the IPO and outstanding common shares in North American Energy Partners Inc. that were not sold in the concurrent secondary offering.

On November 28, 2006, prior to the amalgamation referred to in note 1, the Company acquired the NACG Preferred Corp. Series A preferred shares with a carrying value of $35,000 in exchange for a promissory note in the amount of $27,000 and the forfeiture of accrued dividends of $1,400 (note 17(a)). The Company recorded a gain of $9,400 on the repurchase of the NACG Preferred Corp. Series A preferred shares.

On November 28, 2006, prior to the amalgamation referred to in note 1, the Company repurchased the NAEPI Series A preferred shares for their redemption value of $1,000. The Company also cancelled the consulting and advisory services agreement with The Sterling Group, L.P., Genstar Capital, L.P., Perry Strategic Capital Inc., and SF Holding Corp. (collectively, the “Sponsors”), under which the Company had received ongoing consulting and advisory services with respect to the organization of the companies, employee benefit and compensation arrangements and other matters. The consideration paid for the cancellation of the consulting and advisory services agreement on the closing of the offering was $2,000, which was recorded as general and administrative expense in the consolidated statement of operations. Under the consulting and advisory services agreement, the Sponsors also received a fee of $854, 0.5% of the aggregate gross proceeds to the Company from the offering, which was recorded as a share issue cost.

On November 28, 2006, prior to the amalgamation referred to in note 1, each holder of NAEPI Series B preferred shares received 100 common shares of NACG Holdings Inc. for each NAEPI Series B preferred share held as a result of the Company exercising a call option to acquire the NAEPI Series B preferred shares (note 17(a)). Upon exchange, the carrying value in the amount of $44,682 for the NAEPI Series B preferred shares on the exercise date was transferred to share capital.

On November 28, 2006, the Company completed an IPO for the sale of 8,750,000 common voting shares for total gross proceeds of $158,549. Net proceeds from the IPO, after deducting underwriting fees and offering expenses, were $140,850. Subsequent to the IPO, the underwriters exercised their overallotment option to purchase 687,500 additional voting common shares of the Company for gross proceeds of $12,616. Net proceeds from the overallotment, after deducting underwriting fees and offering expenses, were $11,733. Total net proceeds from the IPO and subsequent overallotment were $152,583 (note 17(b)).

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

These consolidated financial statements are prepared in accordance with Canadian generally accepted accounting principles (“GAAP”). Material inter-company transactions and balances are eliminated on consolidation. Material items that give rise to measurement differences to the consolidated financial statements under United States GAAP are outlined in note 27.

These consolidated financial statements include the accounts of the Company, its wholly-owned subsidiary, North American Construction Group Inc. (“NACGI”), the Company’s joint venture, Noramac Ventures Inc. and the following 100% owned subsidiaries of NACGI:

The preparation of financial statements in conformity with Canadian GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and disclosures reported in these consolidated financial statements and accompanying notes.

Significant estimates made by management include the assessment of the percentage of completion on unit-price or lump-sum contracts (including estimated total costs and provisions for estimated losses) and the recognition of claims and change orders on contracts, assumptions used to value derivative financial instruments, assumptions used to determine the redemption value of redeemable securities, assumptions used in periodic impairment testing, and estimates and assumptions used in the determination of the

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

allowance for doubtful accounts and the useful lives of plant and equipment. Actual results could differ materially from those estimates.

The Company performs its projects under the following types of contracts: time-and-materials; cost-plus; unit-price; and lump-sum. For time-and-materials and cost-plus contracts, revenue is recognized as costs are incurred. Revenue on unit-price and lump-sum contracts is recognized using the percentage-of-completion method, measured by the ratio of costs incurred to date to estimated total costs. Excluded from costs incurred to date, particularly in the early stages of the contract, are the costs of items that do not relate to performance of contracted work.

The length of the Company’s contracts varies from less than one year for typical contracts to several years for certain larger contracts. Contract project costs include all direct labour, material, subcontract and equipment costs and those indirect costs related to contract performance such as indirect labour, supplies, and tools. General and administrative costs are charged to expense as incurred. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses are determined. Changes in project performance, project conditions, and estimated profitability, including those arising from contract penalty provisions and final contract settlements, may result in revisions to costs and income that are recognized in the period in which such adjustments are determined. Profit incentives are included in revenue when their realization is reasonably assured.

Once a project is underway, the Company will often experience changes in conditions, client requirements, specifications, designs, materials and work schedule. Generally, a “change order” will be negotiated with the customer to modify the original contract to approve both the scope and price of the change. Occasionally, however, disagreements arise regarding changes, their nature, measurement, timing and other characteristics that impact costs and revenue under the contract. When a change becomes a point of dispute between the Company and a customer, the Company will then consider it as a claim.

Costs related to change orders and claims are recognized when they are incurred. Revenues related to change orders are included in total estimated contract revenue when it is probable that the change order will result in a bona fide addition to contract value and can be reliably estimated.

Revenues related to claims are included in total estimated contract revenue only to the extent that contract costs related to the claim have been incurred and when it is probable that the claim will result in (1) a bona fide addition to contract value and (2) revenues can be reliably estimated. These two conditions are satisfied when (1) the contract or other evidence provides a legal basis for the claim or a legal opinion is obtained providing a reasonable basis to support the claim, (2) additional costs incurred were caused by unforeseen circumstances and are not the result of deficiencies in our performance, (3) costs associated with the claim are identifiable and reasonable in view of work performed and (4) evidence supporting the claim is objective and verifiable. No profit is recognized on claims until final settlement occurs. This can lead to a situation where costs are recognized in one period and revenue is recognized when customer agreement is obtained or claim resolution occurs, which can be in subsequent periods. Historical claim recoveries should not be considered indicative of future claim recoveries.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The asset entitled “unbilled revenue” represents revenue recognized in advance of amounts invoiced. The liability entitled “billings in excess of costs incurred and estimated earnings on uncompleted contracts” represents amounts invoiced in excess of revenue recognized.

Cash and cash equivalents include cash on hand, bank balances net of outstanding cheques, and short-term investments with maturities of three months or less when purchased.

The Company evaluates the probability of collection of accounts receivable and records an allowance for doubtful accounts, which reduces accounts receivable to the amount management reasonably believes will be collected. In determining the amount of the allowance, the following factors are considered: the length of time the receivable has been outstanding, specific knowledge of each customer’s financial condition, and historical experience.

Inventory is carried at the lower of cost (on a first-in, first-out basis) and replacement cost, and consists primarily of job materials.

Other assets consist of tires and spare component parts, and are stated at the lower of weighted average cost or replacement cost. Other assets are charged to earnings when they are put into use. Included in equipment costs for the year ended March 31, 2007 is a $695 write-down of other assets to their replacement cost at March 31, 2007.

Plant and equipment are recorded at cost. Major components of heavy construction equipment in use such as engines and transmissions are recorded separately. Equipment under capital lease is recorded at the present value of minimum lease payments at the inception of the lease. Depreciation is not recorded until an asset is available for service. Depreciation for each category is calculated based on the cost, net of the estimated residual value, over the estimated useful life of the assets on the following bases and annual rates:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The costs for periodic repairs and maintenance are expensed to the extent the expenditures serve only to restore the assets to their normal operating condition without enhancing their service potential or extending their useful lives.

Goodwill represents the excess purchase price paid by the Company over the fair value of tangible and identifiable intangible assets and liabilities acquired as a result of purchasing a business entity. Goodwill is not amortized but instead is tested for impairment annually or more frequently if events or changes in circumstances indicate that it may be impaired. The impairment test is carried out in two steps. In the first step, the carrying amount of the reporting unit, including goodwill, is compared to its fair value. When the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered to be impaired and the second step of the impairment test is unnecessary. The second step is carried out when the carrying amount of a reporting unit exceeds its fair value, in which case the implied fair value of the reporting unit’s goodwill, determined in the same manner as the value of goodwill is determined in a business combination, is compared with its carrying amount to measure the amount of the impairment loss, if any.

The Company tested goodwill for impairment at December 31, 2006 and December 31, 2005 and determined that there was no impairment in carrying value. The Company conducts its annual impairment test of goodwill on December 31 of each year.

Intangible assets include: customer contracts in progress and related relationships, which are being amortized based on the net present value of the estimated period cash flows over the remaining lives of the related contracts; trade names, which are being amortized on a straight-line basis over their estimated useful life of 10 years; non-competition agreements, which are being amortized on a straight-line basis between the three and five-year terms of the respective agreements; and employee arrangements, which are being amortized on a straight-line basis over the three-year term of the arrangements.

Costs relating to the issue of the senior notes and the revolving credit facility have been deferred and are being amortized on a straight-line basis over the term of the related debt. Deferred financing costs related to debt that has been extinguished are written-off in the period of extinguishment.

Long-lived assets and identifiable intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is assessed by a comparison of the carrying value of the asset to future undiscounted cash flows expected to be generated by the asset. If the value of such asset is considered to be impaired, the impairment loss is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset, and is charged to depreciation expense.

Long-lived assets are classified as held for sale when certain criteria are met, which include: management’s commitment to a plan to sell the assets; the assets are available for immediate sale in their present condition; an active program to locate buyers and other actions to the sell the assets have been

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

initiated; the sale of the assets is probable and their transfer is expected to qualify for recognition as a completed sale within one year; the assets are being actively marketed at reasonable prices in relation to their fair value; and it is unlikely that significant changes will be made to the plan to sell the assets or that the plan will be withdrawn. Assets to be disposed of by sale are reported at the lower of their carrying amount or fair value less costs to sell and are included in current assets. These assets are not depreciated.

The functional currency of the Company is Canadian dollars. Transactions denominated in foreign currencies are recorded at the rate of exchange on the transaction date. Monetary assets and liabilities, including long-term debt denominated in U.S. dollars, are translated into Canadian dollars at the rate of exchange prevailing at the balance sheet date.

The Company uses derivative financial instruments to manage financial risks from fluctuations in exchange rates and interest rates. These instruments include cross-currency swap agreements and interest rate swap agreements. All such instruments are only used for risk management purposes. The Company does not hold or issue derivative financial instruments for trading or speculative purposes. Derivative financial instruments are subject to standard credit terms and conditions, financial controls, management and risk monitoring procedures.

A derivative financial instrument must be designated and effective, at inception and on at least a quarterly basis, to be accounted for as a hedge. For cash flow hedges, effectiveness is achieved if the changes in the cash flows of the derivative financial instrument substantially offset the changes in the cash flows of the related hedged item and if the timing of the cash flows is similar. Effectiveness for fair value hedges is achieved if changes in the fair value of the derivative financial instrument substantially offset changes in the fair value of the hedged item attributable to the risk being hedged. In the event that a derivative financial instrument does not meet the designation or effectiveness criteria, the derivative financial instrument is accounted for at fair value and realized and unrealized gains and losses on the derivative are recognized in the Consolidated Statement of Operations and Deficit in accordance with the Canadian Institute of Chartered Accountants (“CICA”) Emerging Issues Committee Abstract No. 128, “Accounting for Trading, Speculative or Non-Hedging Derivative Financial Instruments” (“EIC-128”). If a derivative financial instrument that previously qualified for hedge accounting no longer qualifies or is settled or de-designated, the fair value on that date is deferred and recognized when the corresponding hedged transaction is recognized in earnings. Premiums paid or received with respect to derivatives that are hedges are deferred and amortized to income over the term of the hedge.

The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, future income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Future income tax assets and liabilities are measured using enacted or substantively enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on future income tax assets and liabilities from a change in tax rates is recognized in income in the period of enactment or substantive enactment. A valuation allowance is recorded against any future income tax asset if it is more likely than not that the asset will not be realized.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The Company accounts for all stock-based compensation payments in accordance with a fair value based method of accounting. Under this fair value based method, compensation cost is measured using the Black-Scholes model at the grant date and is expensed over the award’s vesting period, with a corresponding increase to contributed surplus. Upon exercise of a stock option, share capital is recorded at the sum of proceeds received and the related amount of contributed surplus.

Basic net income (loss) per share is computed by dividing net earnings (loss) available to common shareholders by the weighted average number of shares outstanding during the year (see note 17(d)). Diluted per share amounts are calculated using the treasury stock and if-converted methods. The treasury stock method increases the diluted weighted average shares outstanding to include additional shares from the assumed exercise of stock options, if dilutive. The number of additional shares is calculated by assuming that outstanding in-the-money stock options were exercised and that the proceeds from such exercises, including any unamortized stock-based compensation cost, were used to acquire shares of common stock at the average market price during the year. The if-converted method assumes the conversion of convertible securities at the later of the beginning of the reported period or issue date, if dilutive.

Effective January 1, 2005, the Company prospectively adopted CICA Accounting Guideline 15, “Consolidation of Variable Interest Entities” (“AcG-15”). Variable interest entities (“VIEs”) are entities that have insufficient equity at risk to finance their operations without additional subordinated financial support and/or entities whose equity investors lack one or more of the specified essential characteristics of a controlling financial interest. AcG-15 provides specific guidance for determining when an entity is a variable interest entity (“VIE”) and who, if anyone, should consolidate the VIE. The Company has determined the joint venture in which it has an investment (note 19(c)) qualifies as a VIE and began consolidating this VIE effective January 1, 2005.

Effective January 1, 2005, the Company adopted the CICA Emerging Issues Committee Abstract No. 150, “Determining Whether an Arrangement Contains a Lease” (EIC-150”). EIC-150 addresses a situation where an entity enters into an arrangement, comprising a transaction that does not take the legal form of a lease but conveys a right to use a tangible asset in return for a payment or series of payments. The implementation of this standard did not have a material impact on the Company’s consolidated financial statements.

In April 2005, the Company adopted the CICA Emerging Issues Committee Abstract No. 144, “Accounting by a Customer (Including a Reseller) for Certain Consideration Received from a Vendor” (“EIC-144”). EIC-144 requires companies to recognize the benefit of non-discretionary rebates for achieving specified cumulative purchasing levels as a reduction of the cost of purchases over the relevant period, provided the rebate is probable and reasonably estimable. Otherwise, the rebates would be

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

recognized as purchasing milestones are achieved. The implementation of this new standard did not have a material impact on the Company’s consolidated financial statements.

Effective January 1, 2006, the Company adopted the requirements of CICA Handbook Section 3831, “Non-monetary Transactions”. The new standard requires that an asset exchanged or transferred in a non-monetary transaction must be measured at its fair value except when: the transaction lacks commercial substance; the transaction is an exchange of production or property held for sale in the ordinary course of business for production or property to be sold in the same line of business to facilitate sales to customers other than the parties to the exchange; neither the fair value of the assets or services received nor the fair value of the assets or services given up is reliably measurable; or the transaction is a non-monetary, non-reciprocal transfer to owners that represents a spin-off or other form of restructuring or liquidation. In these cases, the transaction must be measured at carrying value. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

Effective January 1, 2006, the Company adopted the CICA Emerging Issues Committee Abstract No. 157, “Implicit Variable Interests Under AcG-15” (“EIC-157”). EIC-157 requires a company to assess whether it has an implicit variable interest in a VIE or potential VIE when specific conditions exist. An implicit variable interest acts the same as an explicit variable interest except it involves the absorbing and/or receiving of variability indirectly from the entity (rather than directly). The identification of an implicit variable interest is a matter of judgment that depends on the relevant facts and circumstances. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In November 2005, the CICA issued Emerging Issues Committee Abstract No. 159, “Conditional Asset Retirement Obligations” (“EIC-159”) to clarify the accounting treatment for a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within the control of the entity. Under EIC-159, an entity is required to recognize a liability for the fair value of a conditional asset retirement obligation if the obligation can be reasonably estimated. The guidance is effective April 1, 2006 although early adoption is permitted and is to be applied retroactively, with restatement of prior periods. The Company adopted this standard in fiscal 2006 and the adoption did not have a material impact on the Company’s consolidated financial statements.

vii. Stock-based compensation for employees eligible to retire before the vesting date

In July 2006, the CICA Emerging Issues Committee issued Abstract No. 162, ‘‘Stock-Based Compensation for Employees Eligible to Retire Before the Vesting Date’’ (‘‘EIC-162’’). EIC-162 requires that the compensation cost attributable to awards granted to employees eligible to retire at the grant date should be recognized on the grant date if the award’s exercisability does not depend on continued service. Additionally, awards granted to employees who will become eligible to retire during the vesting period should be recognized over the period from the grant date to the date the employee becomes eligible to retire. The Company adopted this standard for the interim period ended December 31, 2006 retroactively, with restatement of prior periods for all stock-based compensation awards. The adoption of this standard had no impact on the Company’s consolidated financial statements.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

viii. Determining the variability to be considered in applying the VIE standards

In January 2005, the CICA issued Handbook Section 3855, “Financial Instruments—Recognition and Measurement”, Handbook Section 1530, “Comprehensive Income”, and Handbook Section 3865, “Hedges”. The new standards are effective for interim and annual financial statements for fiscal years beginning on or after October 1, 2006, specifically April 1, 2007 for the Company. The new standards will require presentation of a separate statement of comprehensive income under specific circumstances. Foreign exchange gains and losses on the translation of the financial statements of self-sustaining subsidiaries previously recorded in a separate section of shareholder’s equity will be presented in comprehensive income. Derivative financial instruments will be recorded in the balance sheet at fair value and the changes in fair value of derivatives designated as cash flow hedges will be reported in comprehensive income. The Company is currently assessing the impact of the new standards.

Effective April 1, 2007, the Company will also be required to adopt CICA Handbook Section 3861, “Financial Instruments—Disclosure and Presentation” (“CICA 3861”), which requires entities to provide disclosures in their financial statements that enable users to evaluate: (1) the significance of financial instruments on the entity’s financial performance; and (2) the nature and extent of risks arising from the use of financial instruments by the entity during the period and at the balance sheet date, and how the entity manages those risks. The Company is currently assessing the impact of this standard.

In March 2007, the CICA issued Handbook Section 3862, “Financial Instruments—Disclosures”, which replaces CICA 3861 and provides expanded disclosure requirements that provide additional detail by financial assets and liability categories. This standard harmonizes disclosures with International Financial Reporting Standards. The standard applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for the Company. The Company is currently evaluating the impact of this standard.

In March 2007, the CICA issued Handbook Section 3863, “Financial Instruments—Presentation” to enhance financial statement users’ understanding of the significance of financial instruments to an entity’s financial position, performance and cash flows. This Section establishes standards for presentation of financial instruments and non-financial derivatives. It deals with the classification of financial instruments, from the perspective of the issuer, between liabilities and equity, the classification of related interest, dividends, gains and losses, and the circumstances in which financial assets and financial liabilities are

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

offset. This standard harmonizes disclosures with International Financial Reporting Standards and applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for the Company. The Company is currently evaluating the impact of this standard.

On April 1, 2007, the Company will adopt CICA Handbook Section 3251, “Equity”, which establishes standards for the presentation of equity and changes in equity during the reporting period. The requirements in this section are in addition to those of CICA Handbook Section 1530 and recommend that an enterprise should present separately the following components of equity: retained earnings, accumulated other comprehensive income, and the total for retained earnings and accumulated other comprehensive income, contributed surplus, share capital and reserves. The Company is currently evaluating the impact of this standard.

In July 2006, the CICA revised Handbook Section 1506, “Accounting Changes”, which requires that: (1) voluntary changes in accounting policy are made only if they result in the financial statements providing reliable and more relevant information; (2) changes in accounting policy are generally applied retrospectively; and (3) prior period errors are corrected retrospectively. This revised standard is effective for fiscal years beginning on or after January 1, 2007, specifically April 1, 2007 for the Company, and is not expected to have a material impact on the Company’s consolidated financial statements.

In December 2006, the CICA issued Handbook Section 1535, “Capital Disclosures”. This standard requires that an entity disclose information that enables users of its financial statements to evaluate an entity’s objectives, policies and processes for managing capital, including disclosures of any externally imposed capital requirements and the consequences of non-compliance. The new standard applies to interim and annual financial statements relating to fiscal years beginning on or after October 1, 2007, specifically April 1, 2008 for the Company. The Company is currently evaluating the impact of this standard.

In June 2007, the CICA issued Handbook Section 3031, “Inventories” to harmonize accounting for inventories under Canadian GAAP with International Financial Reporting Standards. This standard requires the measurement of inventories at the lower of cost and net realizable value and includes guidance on the determination of cost, including allocation of overheads and other costs to inventory. The standard also requires the consistent use of either first-in, first out (FIFO) or weighted average cost formula to measure the cost of other inventories and requires the reversal of previous write-downs to net realizable value when there is a subsequent increase in the value of inventories. The new standard applies to interim and annual financial statements relating to fiscal years beginning on or after January 1, 2008, specifically April 1, 2008 for the Company. The Company is currently evaluating the impact of this standard.

On September 1, 2006, the Company acquired all of the shares of Midwest Foundation Technologies Ltd., a piling company specializing in the design and installation of micropile foundations in western Canada, for cash

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

consideration and acquisition costs totalling $1,646. The transaction has been accounted for by the purchase method with the results of operations included in the financial statements from the date of acquisition. The final purchase price allocation is as follows:

Accounts receivable—holdbacks represent amounts up to 10% under certain contracts that the customer is contractually entitled to withhold until completion of the project or until certain project milestones are achieved.

6. Costs incurred and estimated earnings net of billings on uncompleted contracts

Costs incurred and estimated earnings net of billings on uncompleted contracts is presented in the consolidated balance sheets under the following captions:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Included in depreciation expense for the year ended March 31, 2007 is an impairment charge of $3,582 (2006 – $nil; 2005 – $nil) relating to a decision to dispose of a heavy construction asset in the Mining & Site Preparation segment. The impairment charge is the amount by which the carrying value of the asset exceeded its fair value less costs to sell. The asset has been reclassified from plant and equipment to current assets as the sale of the asset is expected to occur in fiscal 2008.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The above amounts include $15,422 (March 31, 2006 – $14,559) of assets under capital lease and $7,302 (March 31, 2006 – $4,479) of related accumulated depreciation. During the year ended March 31, 2007 additions to plant and equipment included $4,653 of assets that were acquired by means of capital leases (2006 – $5,910; 2005 – $5,385). Depreciation of equipment under capital lease of $1,481 (2006 – $2,545; 2005 – $1,659) is included in depreciation expense.

Amortization of intangible assets of $582 was recorded for the year ended March 31, 2007 (2006 – $730; 2005 – $3,368).

For the year ended March 31, 2007, fees of $275 were paid to the holders of the 8³/4% senior notes in connection with an amendment of the indenture governing the 8³ /4% senior notes (note 15). The amendment has been accounted for as a modification, and the fees paid to the note holders, together with the existing unamortized deferred financing costs, were deferred and will be amortized on a straight-line basis over the remaining term of the 8³/4% senior notes.

During the year ended March 31, 2007, financing fees totaling $1,071 paid in connection with amendment of the revolving credit facility (note 12) were recorded as deferred financing costs. These costs, together with the

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

existing unamortized deferred financing costs, were deferred and will be amortized on a straight-line basis over the term of the amended revolving credit facility consistent with accounting for the amendment of the revolving credit facility as a modification.

In connection with the retirement of the 9% senior secured notes on November 28, 2006, the Company wrote off deferred financing costs of $4,342 (notes 2 and 15) during the year ended March 31, 2007.

For the year ended March 31, 2006, financing costs of $7,546 were incurred in connection with the issue of the 9% senior secured notes and revolving credit facility and were recorded as deferred financing costs. In addition, financing costs of $321 were incurred in connection with the issue of the NAEPI Series A redeemable preferred shares and expensed in the year ended March 31, 2006.

On May 19, 2005, the Company repaid its entire indebtedness under a previous revolving credit facility and term loan using the net proceeds from the issue of the 9% senior secured notes (note 15) and the NAEPI Series B preferred shares (note 17(a)). In connection with the repayment of the senior secured credit facility on May 19, 2005, the Company wrote off deferred financing costs of $1,774 during the year ended March 31, 2006.

Amortization of deferred financing costs of $3,436 was recorded for the year ended March 31, 2007 (2006 – $3,338; 2005 – $2,554).

On May 19, 2005, NAEPI entered into a revolving credit facility with a syndicate of lenders. In connection with the revolving credit facility, NAEPI was required to amend its existing swap agreements to increase the effective rate of interest on its 8³/4% senior notes from 9.765% to 9.889% (note 22(c)) and issue to one of the counterparties to the swap agreements $1.0 million of NAEPI Series A redeemable preferred shares (note 17(a)).

On July 19, 2006, the Company amended and restated its credit agreement to provide for borrowings of up to $55.0 million (previously $40.0 million), subject to borrowing base limitations, under which revolving loans and letters of credit may be issued (previously up to a limit of $30.0 million). Prime rate revolving loans under the amended and restated agreement bear interest at the Canadian prime rate plus 2.0% per annum and swing line revolving loans bear interest at the Canadian prime rate plus 1.5% per annum. Canadian bankers’ acceptances have stamping fees equal to 3.0% per annum and letters of credit are subject to a fee of 3.0% per annum.

Advances under the July 19, 2006 amended and restated agreement are margined with a borrowing base calculation defined as the aggregate of 60.0% of the net book value of the Company’s plant and equipment, 75.0% of eligible accounts receivable and un-pledged cash in excess of $15.0 million. The sum of all borrowings (including issued letters of credit) and the fair value of the Company’s liability under existing swap agreements must not exceed the borrowing base. The amended and restated credit facility is secured by a first priority lien on substantially all of the Company’s existing and after-acquired property.

The facility contains certain restrictive covenants including, but not limited to, incurring additional debt, transferring or selling assets, making investments (including acquisitions), paying dividends or redeeming shares of capital stock. The Company is also required to meet certain financial covenants. Other terms of the agreement, including the expiry date, did not change. The expiry date of the amended and restated revolving credit facility is March 1, 2010.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

As of March 31, 2007, the Company had outstanding borrowings of $20.5 million (2006 – $nil) under the revolving credit facility and had issued $25.0 million in letters of credit to support performance guarantees associated with customer contracts. As of March 31, 2006, the Company had issued $18.0 million in letters of credit to support bonding requirements and performance guarantees associated with customer contracts and operating leases. The Company’s borrowing availability under the facility was $9.5 million at March 31, 2007 (2006 – $9.3 million).

The Company entered into an amended and restated credit agreement on June 7, 2007 (note 28).

The Company leases a portion of its licensed motor vehicles for which the minimum lease payments due in each of the next five fiscal years are as follows:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The 8³/4% senior notes were issued on November 26, 2003 in the amount of US$200 million (Canadian $263 million). These notes mature on December 1, 2011 with interest payable semi-annually on June 1 and December 1 of each year.

The 8³/4% senior notes are unsecured senior obligations and rank equally with all other existing and future unsecured senior debt and senior to any subordinated debt that may be issued by the Company or any of its subsidiaries. The notes are effectively subordinated to all secured debt to the extent of the outstanding amount of such debt.

The 8³/4% senior notes are redeemable at the option of the Company, in whole or in part, at any time on or after: December 1, 2007 at 104.375% of the principal amount; December 1, 2008 at 102.188% of the principal amount; December 1, 2009 at 100.00% of the principal amount; plus, in each case, interest accrued to the redemption date.

If a change of control occurs, the Company will be required to offer to purchase all or a portion of each holder’s 8³/4% senior notes, at a purchase price in cash equal to 101% of the principal amount of the notes offered for repurchase plus accrued interest to the date of purchase.

On December 21, 2006, the indenture governing the 8³/4% senior notes was amended to remove the requirement to provide a reconciliation from Canadian GAAP to United States GAAP in the Company’s interim consolidated financial statements.

The 9% senior secured notes were issued on May 19, 2005 in the amount of US$60.481 million (Canadian $76.345 million). In connection with the IPO (note 2), the Company repurchased the 9% senior secured notes for $74,748 plus accrued interest of $3,027 on November 28, 2006. These notes were redeemed at a premium of 109.26% on November 28, 2006 resulting in a loss on extinguishment of $6,338. The loss on settlement, along with the write-off of deferred financing fees of $4,342 and third party transaction costs of $255, was recorded as a loss on extinguishment of debt in the consolidated statement of operations for the year ended March 31, 2007.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Income tax provision (recovery) differs from the amount that would be computed by applying the Federal and provincial statutory income tax rate to income from continuing operations. The reasons for the differences are as follows:

The income tax effects of temporary differences that give rise to future income tax assets and liabilities are as follows:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Future income tax expense for the year ended March 31, 2007 includes a recovery of $5,858 resulting from the elimination of the valuation allowance. Management considers the scheduled reversals of future income tax liabilities, the character of income tax assets and available tax planning strategies of the Company and its subsidiaries when evaluating the expected realization of future income tax assets. Based on management’s estimate of the expected realization of future income tax assets during the current period, the Company eliminated the valuation allowance recorded against future income tax assets to reflect that it is more likely than not that the future income tax assets will be realized.

At March 31, 2007, the Company has non-capital losses for income tax purposes of approximately $75,087 which expire as follows:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

NACG Preferred Corp. was authorized to issue an unlimited number of Series A preferred shares. The NACG Preferred Corp. Series A preferred shares accrued dividends at a rate of $80.00 per share annually if earnings before interest, taxes, depreciation and amortization (“EBITDA”) for NAEPI was in excess of $75.0 million for the year. The dividends were payable in cash, additional NACG Preferred Corp. Series A preferred shares, or any combination of cash and shares as determined by the Company. The number of shares issuable was .001 of a whole NACG Preferred Corp. Series A preferred share for each $1.00 of dividend declared.

The NACG Preferred Corp. Series A preferred shares, which were issued in connection with the acquisition described in note 1 and were recorded at their guaranteed redemption amount, were redeemable at any time at the option of the Company, and were required to be redeemed on or before November 26, 2012. The redemption price was $1,000.00 per share plus all accrued and unpaid dividends. In the event of a change in control, each holder of NACG Preferred Corp. Series A preferred shares had the right to require the Company to redeem all or any part of such holder’s shares.

On November 28, 2006, the Company acquired the NACG Preferred Corp. Series A preferred shares for a promissory note in the amount of $27,000 and accrued dividends of $1,400 at that time were forfeited resulting in a gain on settlement of $9,400. The promissory note was subsequently repaid with the proceeds from the IPO (note 2).

NAEPI was authorized to issue an unlimited number of Series A preferred shares. The NAEPI Series A preferred shares were non-voting and were not entitled to any dividends. The NAEPI Series A preferred shares were mandatorily redeemable at $1,000 per share on the earlier of (1) December 31, 2011 and (2) an

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Accelerated Redemption Event, specifically (i) the occurrence of a change of control, or (ii) if there is an initial public offering of common shares, the later of (a) the consummation of the initial public offering or (b) the date on which all of the Company’s 8³/4% senior notes and the Company’s 9% senior secured notes are no longer outstanding. NAEPI had the right to redeem the NAEPI Series A preferred shares, in whole or in part, at $1,000 per share at any time.

The NAEPI Series A preferred shares were issued to one of the counterparties to NAEPI’s swap agreements on May 19, 2005 in connection with obtaining a new revolving credit facility. These shares were not entitled to dividends.

The NAEPI Series A preferred shares were initially recorded at their fair value on the date of issue, which was estimated to be $321 based on the present value of the required cash flows using the discount rate implicit at inception. Each reporting period, the accretion of the carrying value to the present value of the redemption amount at each balance sheet date was recorded as interest expense. For the year ended March 31, 2007, the Company recognized $625 of accretion as interest expense (2006 – $54).

On October 6, 2006, the Board of Directors approved the purchase of the NAEPI Series A preferred shares for $1,000 effective with the consummation of the IPO, and these shares were purchased on November 28, 2006 pursuant to an affiliate purchase right under the terms of the NAEPI Series A preferred shares. Accordingly, the Company recorded the additional accretion charge and the extinguishment of the obligation in the year ended March 31, 2007.

NAEPI was authorized to issue an unlimited number of Series B preferred shares. The NAEPI Series B preferred shares were non-voting and were entitled to cumulative dividends at an annual rate of 15% of the issue price of each share. No dividends were payable on NAEPI common shares or other classes of preferred shares (defined as Junior Shares) unless all cumulative dividends had been paid on the NAEPI Series B preferred shares and NAEPI declared a NAEPI Series B preferred share dividend equal to 25% of the Junior Share dividend (except for dividends paid as part of employee and officer arrangements, intercompany administrative charges of up to $1 million annually and tax sharing arrangements). The payment of dividends and the redemption of the NAEPI Series B preferred shares were prohibited by the Company’s revolving credit facility agreement. The payment of dividends and the redemption of the NAEPI Series B preferred shares was also restricted by the indenture agreements governing the Company’s 9% senior secured notes and 8³/4% senior notes.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

7,500 NAEPI Series B preferred shares were issued to non-employee shareholders of the Company for cash proceeds of $7.5 million on May 19, 2005. The NAEPI Series B preferred shares were initially issued to certain non-employee shareholders with the agreement that an offer to purchase these NAEPI Series B preferred shares would also be extended to other shareholders of the Company on a pro rata basis to their interest in the common shares of the Company.

On August 31, 2005, NAEPI issued 8,218 NAEPI Series B preferred shares for cash consideration of $851 to certain shareholders of the Company as a result of this offer. On November 1, 2005, NAEPI repurchased and cancelled 8,218 of the NAEPI Series B preferred shares held by the original non-employee shareholders for cash consideration of $851.

On October 6, 2005, an additional 244 NAEPI Series B preferred shares were issued for cash consideration of $25.

Initially, the redemption price of the NAEPI Series B preferred shares was an amount equal to the greatest of (i) two times the issue price, less the amount, if any, of dividends previously paid in cash on the NAEPI Series B preferred shares; (ii) an amount, not to exceed $100 million which, after taking into account any dividends previously paid in cash on such NAEPI Series B preferred shares, provides the holder with a 40% rate of return, compounded annually, on the issue price from the date of issue; and (iii) an amount, not to exceed $100 million, which is equal to 25% of the arm’s length fair market value of NAEPI’s common shares without taking into account the NAEPI Series B preferred shares.

On March 30, 2006, the terms of the NAEPI Series B preferred shares were amended to eliminate option (iii) from the calculation of the redemption price of the shares.

Prior to the amendment to the terms of the NAEPI Series B preferred shares on March 30, 2006, the NAEPI Series B preferred shares were considered mandatorily redeemable and the Company was required to measure the NAEPI Series B preferred shares at the amount of cash that would be paid under the conditions specified in the contract if settlement occurred at each reporting date prior to the amendment. At March 30, 2006, management estimated the redemption amount to be $42,193. As a result, the Company has recognized the increase of $34,668 in the carrying value as an increase in interest expense for the year ended March 31, 2006.

Concurrent with the amendment to the NAEPI Series B preferred shares, the Company entered into a Put/Call Agreement with the holders of the NAEPI Series B preferred shares. The Put/Call Agreement granted to each holder of the NAEPI Series B preferred shares the right (the “Put/Call Right”) to require the Company to exchange each of the holder’s NAEPI Series B preferred shares for 100 common shares (on a post-split basis—note 17(b)) of the Company. The Put/Call Right could only be exercised upon delivery by the Company of an “Event Notice”, being either: (i) a redemption or purchase call for the redemption or purchase of the NAEPI Series B preferred shares in connection with (A) a redemption on December 31, 2011, or (B) an Accelerated Redemption Event (as defined in note 17(a)(ii)); or (ii) a notice in connection with a Liquidation Event (defined as a liquidation, winding-up or dissolution of NAEPI, whether voluntary or involuntary).

The Put/Call Agreement also granted the Company the right to require the holders of the NAEPI Series B preferred shares to exchange each of their NAEPI Series B preferred shares for 100 common shares (on a post-split basis—note 17(b)) of the Company upon delivery of a call notice to shareholders within five business days of an Event Notice.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

As a result of the March 30, 2006 amendment to the terms of the NAEPI Series B preferred shares and the concurrent execution of the Put/Call Agreement, the Company accounted for the amendment as a related party transaction at the carrying amount. No value was ascribed to the equity classified Put/Call Right as it was a related party transaction. The NAEPI Series B preferred shares were being accreted from their carrying value of $42.2 million on the date of amendment to their redemption value of $69.6 million on December 31, 2011 through a charge to interest expense using the effective interest method over the period to December 31, 2011. For the year ended March 31, 2007, the Company recognized $2,489 of interest expense for this accretion.

On October 6, 2006, the Board of Directors approved the exercise of the call option to acquire all of the issued and outstanding NAEPI Series B preferred shares in exchange for 7,524,400 common shares of the Company and the option was exercised on November 28, 2006. The Company recorded the exchange by transferring the carrying value of the Series B preferred shares on the exercise date of $44,682 to common shares.

On November 3, 2006, the Board of Directors and common shareholders approved a 20-for-1 share split of the Company’s voting and non-voting common shares. All information relating to the exchange of the NAEPI Series B preferred shares (note 17(a)), the issued and outstanding common shares (below), basic and diluted net income (loss) per share data (note 17(d)), stock options (note 25), and basic and diluted net income (loss) per share data under U.S. GAAP (note 27) have been adjusted retroactively to reflect the impact of the share split in these financial statements. The share split was effective November 3, 2006.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

During the year ended March 31, 2005, 60,000 common voting shares were issued for cash consideration of $300. During the year ended March 31, 2006, 60,000 common voting shares were issued for cash consideration of $300. During the year ended March 31, 2007, 5,000 common shares were repurchased for cancellation at a cost of $84, of which $25 reduced share capital and $59 increased the Company’s deficit.

For the year ended March 31, 2007, average stock options of 98,767 were excluded from the calculation of diluted net income per share as the options’ average exercise price was greater than the average market price of the common shares for the year.

For the years ending March 31, 2006 and March 31, 2005, the effect of outstanding stock options and convertible securities on net loss per share was anti-dilutive. As such, the effect of outstanding stock options and convertible securities used to calculate the diluted net loss per share has not been disclosed for these years.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The Company has determined that the joint venture in which it participates is a variable interest entity as defined by AcG-15 and that the Company is the primary beneficiary. Accordingly, the joint venture has been consolidated on a prospective basis effective January 1, 2005. During the fourth quarter of 2005, the arrangement of this joint venture was amended such that the Company is responsible for all of its activities and revenues. As a result, no minority interest has been recorded.

Details of the Company’s proportionate share of the results of operations and cash flows of the joint venture, prior to its consolidation, that are included in the consolidated financial statements are as follows:

The Company conducts business in three business segments: Mining and Site Preparation, Piling and Pipeline.

The Mining and Site Preparation segment provides mining and site preparation services, including overburden removal and reclamation services, project management and underground utility construction, to a variety of customers throughout Canada.

The Piling segment provides deep foundation construction and design build services to a variety of industrial and commercial customers throughout western Canada.

The Pipeline segment provides both small and large diameter pipeline construction and installation services to energy and industrial clients throughout western Canada.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The Company’s goodwill is assigned to the Mining and Site Preparation, Piling and Pipeline segments in the amounts of $125,447, $41,192, and $32,753, respectively.

All of the Company’s assets are located in Canada and activities are carried out throughout the year.

Revenue by major customer was earned in all three segments: Mining and Site Preparation, Pipeline and Piling.

Prior to the reorganization and IPO described in Note 2, the Company had a consulting and advisory services agreement with the Sponsors, under which the Company and certain of its subsidiaries received consulting and advisory services with respect to the organization of the companies, employee benefit and compensation arrangements, and other matters. An advisory fee of $400 for the year ended March 31, 2007 (2006 – $400; 2005 – $400) was paid for these services and was recorded as part of general and administrative costs in the consolidated statement of operations.

On November 28, 2006, upon closing of the IPO described in Note 2, the consulting and advisory services agreement was cancelled. The consideration paid by the Company on the closing of the offering to cancel the agreement was $2,000, which was recorded as part of general and administrative expense during the year ended March 31, 2007. In addition, the Sponsors also received a fee of $854, 0.5% of the aggregate gross proceeds to the Company from the IPO, which was recorded as a share issue cost.

During the year ended March 31, 2006, 75,000 NAEPI Series B preferred shares (on a post-split basis—note 17(a)(iii)) were issued to the above Sponsor group in exchange for cash of $7.5 million (note 17(a)).

Pursuant to several office lease agreements, for the year ended March 31, 2007 the Company paid $572 (2006 – $836; 2005 – $824) to a company owned, indirectly and in part, by one of the directors. Effective November 28, 2006 the director resigned from the board. Accordingly, the lease agreement is no longer considered to be with a related party.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

All related party transactions described above were measured at the exchange amount, being the consideration established and agreed to by the related parties.

The fair values of the Company’s cash and cash equivalents, accounts receivable, unbilled revenue, accounts payable and accrued liabilities approximate their carrying amounts due to the relatively short periods to maturity for the instruments.

The fair value of amounts due under the revolving credit facility and capital lease obligations (collectively “the debt”) are based on management estimates which are determined by discounting cash flows required under the debt at the interest rate currently estimated to be available for loans with similar terms. Based on these estimates, the fair value of amounts due under the revolving credit facility and the Company’s capital lease obligations as at March 31, 2007 and March 31, 2006 are not significantly different than their carrying values. The fair value of the 8³/4% notes, based upon their year end trading value as at March 31, 2007, is $239,803 (March 31, 2006 – $228,752) compared to their carrying value of $230,580 (March 31, 2006 – $233,420). The fair value of the 9% senior secured notes, based upon their year end trading value as at March 31, 2006, was $74,646 compared to their carrying value of $70,587.

The Company is exposed to market risks related to interest rate and foreign currency fluctuations. To mitigate these risks, the Company uses derivative financial instruments such as foreign currency and interest rate swap contracts.

The Company has 8³/4% senior notes denominated in U.S. dollars in the amount of US$200 million. In order to reduce its exposure to changes in the U.S. to Canadian dollar exchange rate, the Company entered into a cross-currency swap agreement to manage this foreign currency exposure for both the principal balance due on December 1, 2011 as well as the semi-annual interest payments through the whole period beginning from the issue date to the maturity date. In conjunction with the cross-currency swap agreement, the Company also entered into a U.S. dollar interest rate swap and a Canadian dollar interest rate swap with the net effect of converting the 8.75% rate payable on the 8³/4% senior notes into a fixed rate of 9.765% for the duration that the 8³/4% senior notes are outstanding. On May 19, 2005 in connection with the Company’s new revolving credit facility at that time, this fixed rate was increased to 9.889%. These derivative financial instruments were not designated as a hedge for accounting purposes. At March 31, 2007, the Company’s derivative financial instruments are carried on the consolidated balance sheets at their fair value of $60,863 (March 31, 2006 – $63,611). The fair values of the Company’s cross-currency and interest rate swap agreements are based on values quoted by the counterparties to the agreements.

At March 31, 2007, the notional principal amount of the cross-currency swap was US$200 million. The notional principal amounts of the interest rate swaps were US$200 million and Canadian $263 million.

The Company is also exposed to foreign currency risk on U.S. dollar operating lease commitments as the Company has not entered into a cross-currency swap agreement to hedge this foreign currency exposure.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The Company is exposed to interest rate risk on the revolving credit facility and its capital lease obligations. The Company also leases equipment with a variable lease payment component that is tied to prime rates. The Company does not use derivative financial instruments to reduce its exposure to these risks.

Reflective of its normal business, a majority of the Company’s accounts receivable are due from large companies operating in the resource sector. The Company regularly monitors the activities and balances in these accounts to manage its credit risk and to assess the need for an allowance for any doubtful accounts.

At March 31, 2007 and March 31, 2006, the following customers represented 10% or more of accounts receivable and unbilled revenue:

The annual future minimum lease payments in respect of operating leases for the next five years and thereafter are as follows:

The Company and its subsidiaries match voluntary contributions made by the employees to their Registered Retirement Savings Plans to a maximum of 5% of base salary for each employee. Contributions made by the Company during the year ended March 31, 2007 were $645 (2006 – $409; 2005 – $305).

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Under the 2004 Amended and Restated Share Option Plan, directors, officers, employees and certain service providers to the Company are eligible to receive stock options to acquire voting common shares in the Company. Each stock option provides the right to acquire one common share in the Company and expires ten years from the grant date or on termination of employment. Options may be exercised at a price determined at the time the option is awarded, and vest as follows: no options vest on the award date and twenty percent vest on each subsequent anniversary date.

The following table summarizes information about stock options outstanding at March 31, 2007:

At March 31, 2007, the weighted average remaining contractual life of outstanding options is 7.7 years (March 31, 2006 – 8.2 years). The Company recorded $2,101 of compensation expense related to stock options in the year ended March 31, 2007 (2006 – $923; 2005 – $497) with such amount being credited to contributed surplus.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The fair value of each option granted by the Company was estimated on the grant date using the Black-Scholes option-pricing model with the following assumptions:

As a result of the filing of a preliminary prospectus on July 21, 2006 with the various Canadian and U.S. securities commissions in preparation for the public sale of common shares, the Company is no longer eligible to use the minimum value method for measuring stock-based compensation. Accordingly, the Company considered the effect of expected volatility in its assumptions using the Black-Scholes option pricing model for options granted after this date. The Company determined its expected volatility based on a statistical analysis of historical volatility for a peer group of companies, which was prepared by an independent valuation firm.

During the year ended March 31, 2007, the Company offered to accelerate the vesting of 222,080 options held by certain members of its Board of Directors, providing for the options to become immediately exercisable on the condition that such options be exercised by September 30, 2006. On July 31, 2006, 27,760 options were exercised pursuant to this offer resulting in additional compensation cost of $24 for the year ended March 31, 2007. The vesting period remained unchanged for stock options held by Directors who did not accept the Company’s offer.

On October 6, 2006, the Company approved the Amended and Restated 2004 Share Option Plan. The amended plan was approved by the shareholders on November 3, 2006 and became effective on the closing of the IPO described in note 2. Option grants under the amended option plan may be made to directors, officers, employees and service providers selected by the Compensation Committee of the Company’s Board of Directors. The Compensation Committee may provide that any options granted will vest immediately or in increments over a period of time. Options to be granted under the amended option plan will have an exercise price of not less than the volume weighted average trading price of the common shares on the Toronto Stock Exchange or the New York Stock Exchange at the time of grant. The amended option plan provides that up to 10% of the Company’s issued and outstanding common shares from time to time may be reserved for issue or issued from treasury under the amended option plan.

In the event of certain change of control events as defined in the amended option plan, all outstanding options will become immediately vested and exercisable. The amended option plan provides that the Company’s Board of Directors can make certain specified amendments to the option plan subject to receipt of shareholder and regulatory approval, and further authorizes the Board of Directors to make all other amendments to the plan, subject only to regulatory approval but without shareholder approval. The amendments the Board of Directors

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

may make without shareholder approval include amendments of a housekeeping nature, changes to the vesting provisions of an option or the option plan, changes to the termination provisions of an option or the option plan which do not entail an extension beyond the original expiry date, the discontinuance of the option plan, and the addition of provisions relating to phantom share units, such as restricted share units and deferred share units which result in participants receiving cash payments, and the terms governing such features.

The amended option plan provides that each option includes a cashless exercise alternative which provides a holder of an option with the right to elect to receive cash in lieu of purchasing the number of shares under the option. Notwithstanding such right, the amended option plan provides that the Company may elect, at its sole discretion, to net settle the option in common stock.

All outstanding options granted under the 2004 Stock Option Plan remained outstanding after the amended and restated plan became effective.

Certain of the prior year figures have been reclassified to conform with the current year’s presentation.

These consolidated financial statements have been prepared in accordance with Canadian GAAP, which differs in certain respects from U.S. GAAP. If U.S. GAAP were employed, the Company’s net income (loss) would be adjusted as follows:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The cumulative effect of material differences between Canadian and U.S. GAAP on the consolidated shareholder’s equity of the Company is as follows:

A continuity schedule of each component of the Company’s shareholders’ equity under U.S. GAAP for the year ended March 31, 2007 is as follows:

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The areas of material difference between Canadian and U.S. GAAP and their impact on the Company’s consolidated financial statements are described below:

U.S. GAAP requires capitalization of interest costs as part of the historical cost of acquiring certain qualifying assets that require a period of time to prepare for their intended use. This is not required under Canadian GAAP. Accordingly, the capitalized amount is subject to depreciation in accordance with the Company’s policies when the asset is placed into service.

Under Canadian GAAP, the Company defers and amortizes debt issue costs on a straight-line basis over the stated term of the related debt. Under U.S. GAAP, the Company is required to amortize financing costs over the stated term of the related debt using the effective interest method resulting in a consistent interest rate over the term of the debt in accordance with Accounting Principles Board Opinion No. 21 (“APB 21”).

Statement of Financial Accounting Standards No. 130, “Reporting Comprehensive Income” (“SFAS 130”) establishes standards for the reporting and display of comprehensive income and its components in a full set of general purpose financial statements. Comprehensive income equals net income (loss) for the period as adjusted for all other non-owner changes in shareholders’ equity. SFAS 130 requires that all items that are required to be recognized under accounting standards as components of comprehensive income be reported in a financial statement. The only component of comprehensive income (loss) is the net income (loss) for the period.

Up until April 1, 2006, the Company followed the provisions of Statement of Financial Accounting Standards No. 123, “Stock-Based Compensation” for U.S. GAAP purposes. As the Company uses the fair value method of accounting for all stock-based compensation payments under Canadian GAAP there were no differences between Canadian and U.S. GAAP prior to April 1, 2006. On April 1, 2006, the Company adopted the provisions of Statement of Financial Accounting Standards No. 123(R), “Share-Based Payment” (“SFAS 123R”). As the Company used the minimum value method for purposes of complying with Statement of Financial Accounting Standards No. 123, it was required to adopt SFAS 123(R) prospectively.

The methodology for determining the expense to be recognized in each period that is prescribed by SFAS 123(R) differs from that prescribed by Canadian GAAP. Canadian GAAP permits accounting for forfeitures of share-based payments as they occur while U.S. standards require an estimate of forfeitures to be made at the date of grant and thereafter until the requisite service period has been completed or the awards are cancelled. The required adjustment under U.S. GAAP to account for estimated forfeitures was not significant for all periods presented.

During the year ended March 31, 2007, the Company granted 315,520 stock options to employees and a director prior to the completion of the IPO. In determining the grant-date fair value of these stock options, the Company included an expected volatility of 40%. The additional compensation cost for these stock options under U.S. GAAP was not significant.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Statement of Financial Accounting Standard No. 133, Accounting for Derivative Instruments and Hedging Activities (“SFAS 133”) establishes accounting and reporting standards requiring that every derivative instrument (including certain derivative instruments embedded in other contracts and debt instruments) be recorded in the balance sheet as either an asset or liability measured at its fair value. On November 26, 2003, the Company issued 8³/4% senior notes for US$200 million (Canadian $263 million) and on May 19, 2005 the Company issued 9% senior secured notes for US$60.4 million (Canadian $76.3 million). Both of these issues included certain contingent embedded derivatives which provided for the acceleration of redemption by the holder at a premium in certain instances. These embedded derivatives met the criteria for bifurcation from the debt contract and separate measurement at fair value. The embedded derivatives have been measured at fair value and classified as part of the carrying amount of the Senior Notes on the consolidated balance sheet, with changes in the fair value being recorded in net income as realized and unrealized (gain) loss on derivative financial instruments for the period under U.S. GAAP. Under Canadian GAAP, separate accounting of embedded derivatives from the host contract is not permitted by EIC-117.

Prior to the modification of the terms of the NAEPI Series B preferred shares, there were no differences between Canadian GAAP and U.S. GAAP related to the NAEPI Series B preferred shares. As a result of the modification of terms of NAEPI’s Series B preferred shares on March 30, 2006, under Canadian GAAP, the Company continued to classify the NAEPI Series B preferred shares as a liability and was accreting the carrying amount of $42.2 million on the amendment date (March 30, 2006) to their December 31, 2011 redemption value of $69.6 million using the effective interest method. Under U.S. GAAP, the Company recognized the fair value of the amended NAEPI Series B preferred shares as minority interest as such amount was recognized as temporary equity in the accounts of NAEPI in accordance with EITF Topic D-98 and recognized a charge of $3.7 million to retained earnings for the difference between the fair value and the carrying amount of the Series B preferred shares on the amendment date. Under U.S. GAAP, the Company was accreting the initial fair value of the amended NAEPI Series B preferred shares of $45.9 million recorded on their amendment date (March 30, 2006) to the December 31, 2011 redemption value of $69.6 million using the effective interest method, which was consistent with the treatment of the NAEPI Series B preferred shares as temporary equity in the financial statements of NAEPI. The accretion charge was recognized as a charge to minority interest (as opposed to retained earnings in the accounts of NAEPI) under U.S. GAAP and interest expense in the Company’s financial statements under Canadian GAAP.

On November 28, 2006, the Company exercised a call option to acquire all of the issued and outstanding NAEPI Series B preferred shares in exchange for 7,524,400 common shares of the Company. For Canadian GAAP purposes, the Company recorded the exchange by transferring the carrying value of the NAEPI Series B preferred shares on the exercise date of $44,682 to common shares. For U.S. GAAP purposes, the conversion has been accounted for as a combination of entities under common control as all of the shareholders of the NAEPI Series B preferred shares are also common shareholders of the Company resulting in the reclassification of the carrying value of the minority interest on the exercise date of $48,140 to common shares.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

The Company has determined that the joint venture in which it participates is a VIE and that the Company is the primary beneficiary. Accordingly the joint venture has been consolidated on a prospective basis effective January 1, 2005. Prior to its consolidation, the joint venture was accounted for using the proportionate consolidation method under Canadian GAAP. Under U.S. GAAP, investments in joint ventures are accounted for using the equity method. The different accounting treatment affects only the display and classification of financial statement items and not net earnings or shareholders’ equity. Rules prescribed by the Securities and Exchange Commission of the United States permit the use of the proportionate consolidation method in the reconciliation to U.S. GAAP provided the joint venture is an operating entity and the significant financial operating policies are, by contractual agreement, jointly controlled by all parties having an interest in the joint venture. In addition, the Company disclosed in note 19(c) the major components of its financial statements resulting from the use of the proportionate consolidation method to account for its interest in the joint venture prior to its consolidation.

The tax effects of temporary differences under Canadian GAAP are described as future income taxes in these financial statements whereas such amounts are described as deferred income taxes under U.S. GAAP.

Statement on Financial Accounting Standards No. 150 “Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity” was issued in May 2003. This Statement establishes standards for the classification and measurement of certain financial instruments with characteristics of both liabilities and equity. The Statement also includes required disclosures for financial instruments within its scope. For the Company, the Statement was adopted as of January 1, 2004, except for certain mandatorily redeemable financial instruments. For certain mandatorily redeemable financial instruments, the Statement was adopted by the Company on January 1, 2005. The adoption of the standard required the Company to reclassify the carrying value of the NACG Preferred Corp. Series A preferred shares from minority interest to redeemable preferred shares. After the adoption of the standard, the Company issued other mandatorily redeemable preferred shares that were within the scope of the standard, which have been disclosed in note 17(a) to the consolidated financial statements.

In November 2004, the FASB issued Statement on Financial Accounting Standards No. 151, “Inventory Costs”. This standard requires the allocation of fixed production overhead costs be based on the normal capacity of the production facilities and unallocated overhead costs recognized as an expense in the period incurred. In addition, other items such as abnormal freight, handling costs and wasted materials require treatment as current period charges rather than being considered an inventory cost. This standard was effective for fiscal 2006 for the Company. The adoption of this standard did not have a material impact on the Company’s financial statements.

In March 2005, the FASB issued FASB Interpretation No. 47, “Accounting for Conditional Asset Retirement Obligations, an interpretation of FASB Statement No. 143” (“FIN 47”), which requires an entity to recognize a liability for the fair value of a conditional asset retirement obligation when incurred if the liability’s fair value can be reasonably estimated. FIN 47 is effective for fiscal years ending after December 15, 2005. The adoption of this standard did not have a material impact on the Company’s financial statements.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

Statement on Financial Accounting Standards No. 153, “Exchanges of Non-monetary Assets – an Amendment of APB Opinion 29” (“SFAS 153”), was issued in December 2004. Accounting Principles Board (“APB”) Opinion 29 is based on the principle that exchanges of non-monetary assets should be measured based on the fair value of assets exchanged. SFAS 153 amends APB Opinion 29 to eliminate the exception for non-monetary exchanges of similar productive assets and replaces it with a general exception for exchanges of non-monetary assets that do not have commercial substance. The standard is effective for the Company for non-monetary asset exchanges occurring in fiscal periods beginning after June 15, 2005, being July 1, 2005 for the Company. The adoption of this standard did not have a material impact on the Company’s financial statements.

In March 2005, FASB Staff Position FIN 46R-5, “Implicit Variable Interests under FASB Interpretation No. 46(R), Consolidation of Variable Interest Entities”, to address whether a company has an implicit variable interest in a VIE or potential VIE when specific conditions exist. The guidance describes an implicit variable interest as an implied financial interest in an entity that changes with changes in the fair value of the entity’s net assets exclusive of variable interests. An implicit variable interest acts the same as an explicit variable interest except that it involves the absorbing and/or receiving of variability indirectly from the entity (rather than directly). This guidance was adopted in 2006 and did not have a material impact on the Company’s consolidated financial statements.

In May 2005, the FASB issued Statement of Financial Accounting Standards No. 154, “Accounting Changes and Error Corrections” (“SFAS 154”) which replaces Accounting Principles Board Opinion No. 20 “Accounting Changes” and Statement of Financial Accounting Standards No. 3, “Reporting Accounting Changes in Interim Financial Statements—An Amendment of APB Opinion No. 28.” SFAS 154 provides guidance on the accounting for and reporting of accounting changes and error corrections. It establishes retrospective application, or the latest practicable date, as the required method for reporting a change in accounting principle and the reporting of a correction of an error. SFAS 154 was effective for the Company for accounting changes and corrections of errors made by the Company in its fiscal year beginning on April 1, 2006. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

In September 2006, the U.S. Securities and Exchange Commission issued Staff Accounting Bulletin No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” (“SAB 108”). SAB 108 provides interpretive guidance on how the effects of the carryover or reversal of prior year misstatements should be considered in quantifying a current year misstatement. It establishes an approach that requires quantification of financial statements misstatements based on the effects of the misstatements on each of the Company’s financial statements and the related financial statement disclosures. SAB 108 was effective for the Company’s annual financial statements for the fiscal year ending March 31, 2007. The adoption of this standard did not have a material impact on the Company’s consolidated financial statements.

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

after September 15, 2006. The fair value election provided for in paragraph 4(c) of this Statement may also be applied upon adoption of this Statement for hybrid financial instruments that had been bifurcated under paragraph 12 of Statement 133 prior to the adoption of this Statement. This states that an entity that initially recognizes a host contract and a derivative instrument may irrevocably elect to initially and subsequently measure that hybrid financial instrument, in its entirety, at fair value with changes in fair value recognized in earnings. SFAS 155 is applicable for all financial instruments acquired or issued in the Company’s 2008 fiscal year although early adoption is permitted. The Company is currently reviewing the impact of this statement.

In June 2006, the FASB issued Interpretation No. 48, “Accounting for Uncertainty in Income Taxes – An Interpretation of FASB Statement No. 109” (“FIN 48”) which clarifies the accounting for uncertainty in income taxes recognized in an enterprise’s financial statements in accordance with FASB Statement No. 109, “Accounting for Income Taxes”. FIN 48 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. This Interpretation also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition requirements. FIN 48 is effective for the Company’s 2008 fiscal year. The Company is currently reviewing the impact of this Interpretation.

In May 2007, the FASB issued FASB Staff Position No. FIN 48-1, “Definition of Settlement in FASB Interpretation No. 48”, which provides guidance on how an enterprise should determine whether a tax position is effectively settled for the purpose of recognizing previously unrecognized tax benefits. This FASB Staff Position is effective upon the initial adoption of FIN 48 and the Company is currently assessing the impact of this guidance.

Statement of Financial Accounting Standards No. 157, “Fair Value Measurement” (“SFAS 157”) was issued September 2006. The Statement provides guidance for using fair value to measure assets and liabilities. The Statement also expands disclosures about the extent to which companies measure assets and liabilities at fair value, the information used to measure fair value, and the effect of fair value measurement on earnings. This Statement applies under other accounting pronouncements that require or permit fair value measurements. This Statement does not expand the use of fair value measurements in any new circumstances. Under this Statement, fair value refers to the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants in the market in which the entity transacts. SFAS 157 is effective for the Company for fair value measurements and disclosures made by the Company in its fiscal year beginning on April 1, 2008. The Company is currently reviewing the impact of this statement.

Statement of Financial Accounting Standards No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities” (“SFAS 159”) was issued in February 2007. The statement permits entities to choose to measure many financial instruments and certain other items at fair value, providing the opportunity to mitigate volatility in reported earnings caused by measuring related assets and liabilities differently without the need to apply hedge accounting provisions. SFAS 159 is effective for fiscal years beginning after November 15, 2007, specifically April 1, 2008 for the Company, with earlier adoption permitted. The Company is currently reviewing the impact of this pronouncement.

a) On June 7, 2007, the Company modified its amended and restated credit agreement to provide for borrowings of up to $125 million (previously $55.0 million) under which revolving loans and letters of credit

Index to Financial Statements

(Amounts in thousands of Canadian dollars, except per share amounts or unless otherwise specified)

may be issued. At the current credit rating, prime rate and swing line revolving loans under the agreement will bear interest at the Canadian prime rate plus 0.5% per annum. At the current credit rating, Canadian bankers’ acceptances have stamping fees equal to 2.0% per annum and letters of credit are subject to a fee of 1.5% per annum.

The credit facility is secured by a first priority lien on substantially all the Company’s existing and after-acquired property and contains certain restrictive covenants including, but not limited to, incurring additional debt, transferring or selling assets, making investments including acquisitions or to pay dividends or redeem shares of capital stock. The Company is also required to meet certain financial covenants under the new credit agreement.

b) On June 13, 2007, the Company secured financing of $22.3 million for a new piece of heavy equipment. Progress draws under the agreement commenced on June 13, 2007 and the 7.5 year operating lease will be fully funded when the equipment is commissioned, which is expected to be December 31, 2007. During the progress funding period, interest will accrue at the Canadian prime rate plus 1.25% per annum and will be capitalized into the lease. Once fully funded, the Company will choose between a fixed rate (determined as the June 2015 Government of Canada Bond rate plus 3.0% per annum) and a variable rate, being the one-month Canadian bankers’ acceptance rate plus 2.85% per annum.


	Price to Public	Underwriting Discounts and Commissions	Proceeds to the Selling Shareholders
Per Share	US$17.00	US$0.765	US$16.235
Total	US$123,561,967	US$5,560,289	US$118,001,678


		Page
DESCRIPTION OF SHARE CAPITAL		94
SHARES ELIGIBLE FOR FUTURE SALE		99
INCOME TAX CONSIDERATIONS		101
UNDERWRITING		105
SELLING RESTRICTIONS		109
LEGAL MATTERS		111
EXPERTS		111
WHERE YOU CAN FIND MORE INFORMATION		111
ENFORCEABILITY OF CIVIL LIABILITIES AGAINST FOREIGN PERSONS		112
INDUSTRY DATA AND FORECASTS		112
NON-GAAP FINANCIAL MEASURES		113
EXCHANGE RATE DATA		114
GLOSSARY OF TERMS		115
INDEX TO FINANCIAL STATEMENTS		F-1


	New York Stock Exchange				Toronto Stock Exchange
	High		Low		High		Low
2006
November (beginning November 22, 2006)	US$	17.33	US$	15.40	C$	19.75	C$	17.40
December		18.15		15.40		20.75		18.24
2007
January		17.30		15.01		20.49		17.65
February		19.38		16.55		22.42		19.51
March		21.39		18.81		26.00		22.06
April		22.80		18.60		25.76		21.87
May		23.72		20.68		26.15		22.01
June		21.98		19.51		23.30		21.24
July		21.43		17.13		22.29		18.33


	Year ended March 31,
	2007					2006				2005
	(Dollars in thousands)
Revenue by operating segment:
Mining and site preparation	$	473,179		75.2	%	$	366,721	74.5	%	$	264,835	74.1	%
Piling		109,266		17.3			91,434	18.6			61,006	17.1
Pipeline		47,001		7.5			34,082	6.9			31,482	8.8

Total	$	629,446		100.0	%	$	492,237	100.0	%	$	357,323	100.0	%

Segment profit:
Mining and site preparation	$	71,062		74.9	%	$	50,730	61.7	%	$	11,617	38.9	%
Piling		34,395		36.2			22,586	27.4			13,319	44.6
Pipeline		(10,539	)	(11.1	)		8,996	10.9			4,902	16.5

Total	$	94,918		100.0	%	$	82,312	100.0	%	$	29,838	100.0	%

Equipment hours by operating segment:
Mining and site preparation		909,361		91.6	%		811,891	93.0	%		673,613	88.2	%
Piling		47,965		4.8			37,300	4.3			56,460	7.4
Pipeline		35,588		3.6			24,197	2.8			33,847	4.4

Total		992,914		100.0	%		873,388	100.0	%		763,920	100.0	%


	Fiscal Year 2007									Fiscal Year 2006
	Q4		Q3		Q2			Q1		Q4		Q3		Q2		Q1
	(Dollars in millions, except per share amounts)
Revenue	$	205.3	$	155.9	$	130.1		$	138.1	$	142.3	$	121.5	$	124.0	$	104.4
Gross profit		13.6		26.0		20.2			32.6		31.7		13.8		21.9		12.9
Operating income		4.5		13.8		9.7			23.1		22.4		5.9		15.9		5.2
Net income (loss)		1.4		6.6		(4.8	)		17.9		13.7		2.1		11.5		(49.2	)
EPS—basic(1)		0.04		0.27		(0.26	)		0.96		0.73		0.11		0.62		(2.65	)
EPS—diluted(1)		0.04		0.26		(0.26	)		0.71		0.73		0.11		0.47		(2.65	)
Equipment hours		268,565		239,341		236,711			248,297		231,633		221,355		234,649		185,751


Credit Suisse		UBS Investment Bank		CIBC World Markets


		Page
PROSPECTUS SUMMARY		1
RISK FACTORS		14
CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS		27
USE OF PROCEEDS		29
PRICE RANGE OF COMMON SHARES		29
DIVIDEND POLICY		29
CAPITALIZATION		30
SELECTED HISTORICAL FINANCIAL DATA		31
MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS		38
BUSINESS		59
MANAGEMENT		78
RELATED PARTY TRANSACTIONS		84
PRINCIPAL AND SELLING SHAREHOLDERS		88
DESCRIPTION OF CERTAIN INDEBTEDNESS		92


	March 31, 2007
	(Dollars in thousands)
Cash and cash equivalents	$	7,895

Total debt (including current portion):
Revolving credit facility (a)	$	20,500
Obligations under capital leases		9,709
8³/4% senior notes due 2011 (b)		230,580

Total debt, including current portion		260,789
Derivative financial instruments		60,863
Shareholders’ equity (c):
Common shares (35,192,260 voting common shares and 412,400 non-voting common shares)		296,198
Contributed surplus		3,606
Deficit		(55,526	)

Total shareholders’ equity		244,278

Total capitalization	$	565,930


										November 26, 2003 to March 31, 2004			Predecessor (a)
	Year Ended March 31,												April 1, 2003 to November 25, 2003			Year Ended March 31, 2003
	2007			2006			2005						April 1, 2003 to November 25, 2003			Year Ended March 31, 2003
	(Dollars in thousands except per share amounts)
Statement of operations data:
Revenue (b)	$	629,446		$	492,237		$	357,323		$	127,611		$	250,652		$	344,186
Project costs		363,930			308,949			240,919			83,256			156,976			219,979
Equipment costs		122,306			64,832			52,831			13,686			43,484			55,871
Equipment operating lease expense		19,740			16,405			6,645			1,430			10,502			16,357
Depreciation		31,034			21,725			20,762			6,674			6,566			10,974

Gross profit		92,436			80,326			36,166			22,565			33,124			41,005
General and administrative costs		39,769			30,903			22,873			6,065			7,783			12,233
Loss (gain) on sale of plant and equipment		959			(733	)		494			131			(49	)		(2,265	)
Amortization of intangible assets		582			730			3,368			12,928			—			—

Operating income before the undernoted		51,126			49,426			9,431			3,441			25,390			31,037
Management fee (c)		—			—			—			—			41,070			8,000
Interest expense (d)		37,249			68,776			31,141			10,079			2,457			4,162
Foreign exchange gain		(5,044	)		(13,953	)		(19,815	)		(661	)		(7	)		(234	)
Gain on repurchase of NACG Preferred Corp. Series A preferred shares (e)		(9,400	)		—			—			—			—			—
Loss on extinguishment of debt (e)		10,935			2,095			—			—			—			—
Other income		(904	)		(977	)		(421	)		(230	)		(367	)		—
Realized and unrealized (gain) loss on derivative financial instruments		(196	)		14,689			43,113			12,205			—			—

Income (loss) before income taxes		18,486			(21,204	)		(44,587	)		(17,952	)		(17,763	)		19,109
Income taxes (benefit)		(2,593	)		737			(2,264	)		(5,670	)		(6,622	)		6,620

Net income (loss) (f)	$	21,079		$	(21,941	)	$	(42,323	)	$	(12,282	)	$	(11,141	)	$	12,489

Earnings Per Share
Basic	$	0.87		$	(1.18	)	$	(2.28	)	$	(0.66	)		N/A			N/A
Diluted	$	0.83		$	(1.18	)	$	(2.28	)	$	(0.66	)		N/A			N/A

Weighted average number of common shares
Basic		24,352,156			18,574,800			18,539,720			18,500,000			N/A			N/A
Diluted		25,443,907			18,574,800			18,539,720			18,500,000			N/A			N/A

Balance sheet data (end of period):
Cash	$	7,895		$	42,804		$	17,924		$	36,595					$	651
Plant and equipment, net		255,963			184,562			177,089			167,905						76,234
Total assets		710,736			568,682			540,155			489,674						158,584
Total debt (g)		260,789			314,959			310,402			313,798						63,401
Other long-term financial liabilities (g)		60,863			141,179			86,723			46,266						—
Total long-term financial liabilities (g)		297,957			453,092			395,354			352,027						40,342
NACG Preferred Corp. Series A preferred shares (e)		—			35,000			35,000			35,000						—
Pre-amalgamated North American Energy Partners Inc. Series A preferred shares (e)		—			375			—			—						—
Pre-amalgamated North American Energy Partners Inc. Series B preferred shares (e)		—			42,193			—			—						—
Total shareholders’ equity (e)		244,278			18,111			38,829			80,355						29,818


									Predecessor
	Year Ended March 31,						November 26, 2003 to March 31, 2004		April 1, 2003 to November 25, 2003
	2007		2006		2005		November 26, 2003 to March 31, 2004		April 1, 2003 to November 25, 2003
	(Dollars in thousands)
Interest on senior notes	$	27,417	$	28,838	$	23,189	$	8,096	$	—
Interest on capital lease obligations		725		457		230		—		—
Interest on senior secured credit facility		—		564		3,274		1,089		599
Interest on NACG Preferred Corp. Series A preferred shares		1,400		—		—		—		—
Accretion and change in redemption value of pre-amalgamated North American Energy Partners Inc. Series B preferred shares		2,489		34,668		—		—		—
Accretion of pre-amalgamated North American Energy Partners Inc. Series A preferred shares		625		54		—		—		—

Interest on long-term debt		32,656		64,581		26,693		9,185		599
Amortization of deferred financing costs		3,436		3,338		2,554		814		—
Other interest		1,157		857		1,894		80		1,858

Interest expense	$	37,249	$	68,776	$	31,141	$	10,079	$	2,457


	March 31, 2007			March 31, 2006			% Change
	(Dollars in thousands)
Current assets	$	229,061		$	161,628		41.7	%
Current liabilities		(148,789	)		(92,096	)	61.6
Working capital		80,272			69,532		15.4
Plant and equipment		255,963			184,562		38.7
Total assets		710,736			568,682		25.0
Capital lease obligations (including current portion)		(9,709	)		(10,952	)	(11.3	)
Total long-term financial liabilities		(297,957	)		(453,092	)	(34.2	)


By Segment			By Contract Type
Mining & Site Preparation	$	732.0	Unit-Price	$	778.0
Piling		40.0	Lump-Sum		10.0
Pipeline		16.0	Time-and-Materials, Cost-Plus		—

Total	$	788.0	Total	$	788.0


	Payments Due by Fiscal Year
	Total		2008		2009		2010		2011		2012 and After
	(In millions)
Senior notes (a)	$	230.6	$	—	$	—	$	—	$	—	$	230.6
Capital leases (including interest)		10.7		3.9		3.1		2.1		1.4		0.2
Operating leases		40.6		13.9		13.3		10.3		3.0		0.1

Total contractual obligations	$	281.9	$	17.8	$	16.4	$	12.4	$	4.4	$	230.9


Company	Project Name	Status	Startup Date	Bitumen Capacity (bpd)
Athabasca Oil Sands Project (Albian)	Muskeg River Mine Expansion and Debottleneck	Application	2010	115,000
	Jackpine Mine	Approved	2010	100,000
	Scotford Upgrader Debottleneck	Application	2007	45,000
	Scotford Upgrader Expansion	Application	2009	90,000
CNRL	Horizon Mine and Upgrader	Construction	2008	135,000
Husky	Lloydminster Upgrader Debottleneck	Construction	2006	12,000
Imperial/ExxonMobil	Kearl Mine	Application	2010	100,000
OPTI/Nexen	Long Lake Upgrader	Construction	2007	72,000
Suncor	Steepbank Debottleneck	Construction	2006	25,000
	Millennium Mine Debottleneck	Construction	2008	23,000
	Millennium Coker Unit	Construction	2008	116,000
	Voyageur Upgrader	Application	2010	156,000
Syncrude	Stage 3 Expansion	Construction	2006	116,300
Synenco	Northern Lights Mine	Disclosure	2009	50,000
	Northern Lights Upgrader	Disclosure	2010	50,000
Total E&P	Joslyn Mine	Application	2010	50,000
	Joslyn/Surmont Upgrader	Announced	2010	50,000
BA Energy	Heartland Upgrader Phase 1	Construction	2008	54,400
	Heartland Upgrader Phase 2	Approved	2010	54,400
North West Upgrading	North West Upgrader	Application	2010	50,000
Peace River Oil Upgrading	Bluesky Upgrader	Announced	2010	25,000


Category	Capacity Range	Horsepower Range	Number in Fleet	Number Leased
Mining and site preparation:
Articulating trucks	30-42 tons	305-460	54	—
Mining trucks	50-330 tons	650-2,700	128	13
Shovels	36-58 cubic yards	2,600-3,760	5	2
Excavators	1-20 cubic yards	94-1,350	135	3
Crawler tractors	N/A	120-1,350	113	8
Graders	14-24 feet	150-500	25	3
Scrapers	28-31 cubic yards	450	14	—
Loaders	1.5-16 cubic yards	110-690	52	—
Skidsteer loaders	1-2.25 cubic yards	70-150	47	—
Packers	44,175-68,796 lbs	216-315	25	—
Pipeline:
Snow cats	N/A	175	4	—
Trenchers	N/A	165	2	—
Pipelayers	16,000-140,000 lbs	78-265	35	—
Piling:
Drill rigs	60-135 feet (drill depth)	210-1,500	37	—
Cranes	25-100 tons	200-263	14	—

Total			690	29


Name		State or Other Jurisdiction of Incorporation or Organization
North American Construction Group Inc.(1)		Canada
North American Caisson Ltd.		Alberta, Canada
North American Construction Ltd.		Canada
North American Engineering Inc.		Alberta, Canada
North American Enterprises Ltd.		Alberta, Canada
North American Industries Inc.		Alberta, Canada
North American Maintenance Ltd.		Alberta, Canada
North American Mining Inc.		Alberta, Canada
North American Pipeline Inc.		Alberta, Canada
North American Road Inc.		Alberta, Canada
North American Services Inc.		Alberta, Canada
North American Site Development Ltd.		Alberta, Canada
North American Site Services Inc.		Alberta, Canada
Griffiths Pile Driving Inc.		Alberta, Canada
NACG Finance LLC(2)		Delaware


Location	Function	Owned or Leased
Acheson, Alberta	Corporate headquarters and major equipment repair facility	Leased (a)

Calgary, Alberta	Regional office and equipment repair facility—piling operations	Building Owned Land Leased (b)

Syncrude Mine Site, South End Fort McMurray, Alberta	Regional office and major equipment repair facility—earthworks and mining operations	Building Owned Land Provided

Syncrude Plant Site Fort McMurray, Alberta	Satellite office and minor repair facility—all operations	Building Owned Land Leased (c)

CNRL Plant Site Fort McMurray, Alberta	Site office and maintenance facility	Facility Owned Land Provided

Aurora Mine Site Fort McMurray, Alberta	Satellite office and equipment repair facility—all operations	Building Leased (d) Land Provided

Albian Sands Mine Site Fort McMurray, Alberta	Satellite office and equipment repair facility—all operations	Building Leased (d) Land Provided

New Westminster, British Columbia	Regional office and equipment repair facility—piling operations	Building Owned Land Leased (e)

Fort Nelson, British Columbia	Satellite office—pipeline operations	Leased (f)

Regina, Saskatchewan	Regional office and equipment repair facility—piling operations	Leased (g)

Martensville, Saskachewan	Regional office and equipment repair facility—piling operations	Leased (h)

Calgary, Alberta	Satellite office and shop for micropile division	Leased (d)

Edmonton, Alberta	Satellite office and warehouse storage facility	Leased (i)

Edmonton, Alberta	Termporary satellite office	Leased (d)


Name and Municipality of Residence	Age	Position
Rodney J. Ruston	56	Director, President and Chief Executive Officer
Edmonton, Alberta

Douglas A. Wilkes	52	Vice President, Finance and Chief Financial Officer
Surrey, British Columbia		Vice President, Finance and Chief Financial Officer

Robert G. Harris	59	Vice President, Human Resources, Health, Safety & Environment
Edmonton, Alberta

Christopher J. Hayman	44	Vice President, Supply Chain
St. Albert, Alberta

William M. Koehn(1)	45	Vice President, Operations and Chief Operating Officer
Spruce Grove, Alberta		Vice President, Operations and Chief Operating Officer

Miles W. Safranovich	42	Vice President, Business Development and Estimating
Spruce Grove, Alberta		Vice President, Business Development and Estimating

Ronald A. McIntosh	65	Chairman of the Board
Calgary, Alberta

George R. Brokaw	39	Director
Southampton, New York

John A. Brussa	50	Director
Calgary, Alberta

John D. Hawkins	43	Director
Houston, Texas

William C. Oehmig	57	Director
Houston, Texas

Richard D. Paterson	64	Director
San Francisco, California

Allen R. Sello	67	Director
West Vancouver, British Columbia

Peter W. Tomsett	49	Director
West Vancouver, British Columbia

K. Rick Turner	49	Director
Little Rock, Arkansas


The Sterling Group, L.P.		2,278,500
Genstar Capital, L.P.		1,650,000
Perry Strategic Capital Inc.		1,650,000
SF Holding Corp.		1,099,700


	Common Shares Beneficially Owned Prior to the Offering			Common Shares Offered Hereby	Common Shares Beneficially Owned After the Offering		Common Shares Beneficially Owned After the Offering Assuming Full Exercise of Over-Allotment Option
Name and Address of Beneficial Owner	Number		%	Number	Number	%	Number	%
George R. Brokaw	16,656	(a)	*	—	16,656	*	16,656	*

John A. Brussa	129,056	(a)	*	—	129,056	*	129,056	*

Robert G. Harris	—		—	—	—	—	—	—

John D. Hawkins	16,656	(a)(h)	*	—	16,656	*	16,656	*

Christopher J. Hayman	52,100	(b)	*	—	52,100	*	52,100	*

William M. Koehn	160,000	(c)	*	—	160,000	*	160,000	*

Ronald A. McIntosh	84,200	(d)	*	—	84,200	*	84,200	*

William C. Oehmig	205,460	(e)(h)	*	—	205,460	*	205,460	*

Richard D. Paterson	16,656	(a)(j)	*	—	16,656	*	16,656	*

Rodney J. Ruston	126,700	(f)	*	—	126,700	*	126,700	*

Allen R. Sello	33,652		*	—	33,652	*	33,652	*

Miles W. Safranovich	46,100	(b)	*	—	46,100	*	46,100	*

Peter W. Tomsett	—		—	—	—	—	—	—

K. Rick Turner	16,656	(a)	*	—	16,656	*	16,656	*

Douglas A. Wilkes	7,500		*	—	7,500	*	7,500	*

Directors and executive officers as a group (15 persons)	911,392	(g)	2.55	—	911,392	2.55	911,392	2.55

Sterling Group Partners I, L.P. Eight Greenway Plaza, Suite 702 Houston, Texas 77046	6,351,265	(h)	17.76	1,500,000	4,851,265	13.57	4,626,265	12.94

Perry Luxco S.A.R.L. Carré Bonn 20, Rue de la Poste L-2346 Luxembourg	1,718,443	(i)	4.81	—	1,718,443	4.81	1,718,443	4.81

Perry Partners, L.P. 767 Fifth Avenue 19th Floor New York, New York 10153	2,161,361	(i)	6.05	—	2,161,361	6.05	2,161,361	6.05

Perry Partners International, Inc. 767 Fifth Avenue 19th Floor New York, New York 10153	718,662	(i)	2.01	—	718,662	2.01	718,662	2.01

Richard Perry 767 Fifth Avenue 19th Floor New York, New York 10153	4,598,466	(i)	12.86	—	4,598,466	12.86	4,598,466	12.86


Underwriter		Number of Shares
Credit Suisse Securities (USA) LLC		2,616,606
UBS Securities LLC		2,253,189
CIBC World Markets Corp.		1,490,012
Jefferies & Company, Inc.		908,544

Total		7,268,351


	2007
	June	May	April	March	February	January
High for period	0.9453	0.9345	0.9035	0.8673	0.8631	0.8586
Low for period	0.9322	0.8980	0.8633	0.8467	0.8437	0.8457



Report of Independent Registered Public Accounting Firm		F-2

Consolidated Balance Sheets as at March 31, 2007 and 2006		F-3

Consolidated Statements of Operations and Deficit for the years ended March 31, 2007, 2006 and 2005		F-4

Consolidated Statements of Cash Flows for the years ended March 31, 2007, 2006 and 2005		F-5

Notes to the Consolidated Financial Statements		F-6


	2007			2006
Assets
Current assets:
Cash and cash equivalents	$	7,895		$	42,804
Accounts receivable (note 5)		93,220			67,235
Unbilled revenue (note 6)		82,833			43,494
Inventory		156			57
Asset held for sale (note 8)		8,268			—
Prepaid expenses and deposits (note 7)		11,932			1,796
Other assets		10,164			1,004
Future income taxes (note 16)		14,593			5,238

		229,061			161,628
Future income taxes (note 16)		14,364			5,383
Plant and equipment (note 9)		255,963			184,562
Goodwill (note 4)		199,392			198,549
Intangible assets, net of accumulated amortization of $17,608 (March 31, 2006 – $17,026) (note 10)		600			772
Deferred financing costs, net of accumulated amortization of $7,595 (March 31, 2006 – $6,004) (notes 2 and 11)		11,356			17,788

	$	710,736		$	568,682

Liabilities and Shareholders’ Equity
Current liabilities:
Revolving credit facility (notes 12 and 28)	$	20,500		$	—
Accounts payable		94,548			54,085
Accrued liabilities (note 13)		23,393			24,603
Billings in excess of costs incurred and estimated earnings on uncompleted contracts (note 6)		2,999			5,124
Current portion of capital lease obligations (note 14)		3,195			3,046
Future income taxes (note 16)		4,154			5,238

		148,789			92,096
Capital lease obligations (note 14)		6,514			7,906
Senior notes (note 15)		230,580			304,007
Derivative financial instruments (note 22(b))		60,863			63,611
Redeemable preferred shares (notes 2 and 17(a))		—			77,568
Future income taxes (note 16)		19,712			5,383

		466,458			550,571

Shareholders’ equity:
Common shares (authorized—unlimited number of voting and non-voting common shares; issued and outstanding—March 31, 2007 – 35,192,260 voting common shares and 412,400 non-voting common shares (March 31, 2006 – 18,207,600 voting common shares and 412,400 non-voting common shares)) (notes 2 and 17(b))		296,198			93,100
Contributed surplus (notes 17(c) and 25)		3,606			1,557
Deficit		(55,526	)		(76,546	)

		244,278			18,111

Commitments (note 23)
United States generally accepted accounting principles (note 27)
Subsequent events (note 28)

	$	710,736		$	568,682


• North American Caisson Ltd.		• North American Pipeline Inc.

• North American Construction Ltd.		• North American Road Inc.

• North American Engineering Ltd.		• North American Services Inc.

• North American Enterprises Ltd.		• North American Site Development Ltd.

• North American Industries Inc.		• North American Site Services Inc.

• North American Mining Inc.		• Griffiths Pile Driving Inc.

• North American Maintenance Ltd.		• Midwest Foundation Technologies Ltd.


Asset	Basis	Rate
Heavy equipment	Straight-line	Operating hours
Major component parts in use	Straight-line	Operating hours
Other equipment	Straight-line	10-20%
Licensed motor vehicles	Declining balance	30%
Office and computer equipment	Straight-line	25%
Buildings	Straight-line	10%
Leasehold improvements	Straight-line	Over shorter of estimated useful life and lease term
Assets under construction	N/A	N/A


Net assets acquired at fair values:
Working capital (including cash of $129)	$	170
Plant and equipment		554
Intangible assets
Customer relationships		210
Non-competition agreement		200
Goodwill (assigned to the Piling segment)		843
Future income tax liability		(194	)
Capital lease obligations		(137	)

	$	1,646


	March 31, 2007			March 31, 2006
Accounts receivable—trade	$	69,320		$	55,666
Accounts receivable—holdbacks		19,496			10,748
Income and other taxes receivable		3,034			—
Accounts receivable—other		1,458			891
Allowance for doubtful accounts		(88	)		(70	)

	$	93,220		$	67,235


	March 31, 2007			March 31, 2006
Costs incurred and estimated earnings on uncompleted contracts	$	742,186		$	610,006
Less: billings to date		(662,352	)		(571,636	)

	$	79,834		$	38,370


	March 31, 2007			March 31, 2006
Unbilled revenue	$	82,833		$	43,494
Billings in excess of costs incurred and estimated earnings on uncompleted contracts		(2,999	)		(5,124	)

	$	79,834		$	38,370


	March 31, 2007		March 31, 2006
Prepaid insurance and property taxes	$	916	$	345
Prepaid lease payments		3,934		—
Deposits for tires		7,082		1,451

	$	11,932	$	1,796


March 31, 2007	Cost		Accumulated depreciation		Net book value
Heavy equipment	$	254,107	$	46,609	$	207,498
Major component parts in use		7,884		2,489		5,395
Other equipment		16,001		5,651		10,350
Licensed motor vehicles		23,345		12,121		11,224
Office and computer equipment		4,841		2,249		2,592
Buildings		16,443		716		15,727
Leasehold improvements		2,992		664		2,328
Assets under construction		849		—		849

	$	326,462	$	70,499	$	255,963


March 31, 2006	Cost		Accumulated depreciation		Net book value
Heavy equipment	$	174,042	$	31,347	$	142,695
Major component parts in use		5,088		2,091		2,997
Other equipment		13,074		4,186		8,888
Licensed motor vehicles		18,223		8,410		9,813
Office and computer equipment		3,362		1,493		1,869
Leasehold improvements		2,959		247		2,712
Assets under construction		15,588		—		15,588

	$	232,336	$	47,774	$	184,562


March 31, 2007	Cost		Accumulated amortization		Net book value
Customer contracts in progress and related relationships	$	15,533	$	15,360	$	173
Other intangible assets		2,675		2,248		427

	$	18,208	$	17,608	$	600


For the year ending March 31,
2008	$	156
2009		134
2010		78
2011		49
2012 and thereafter		183

	$	600


	March 31, 2007		March 31, 2006
Accrued interest payable	$	8,669	$	10,878
Payroll liabilities		7,484		7,423
Liabilities related to equipment leases		7,039		5,061
Income and other taxes payable		201		1,241

	$	23,393	$	24,603