Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Information

Summarized financial information by reportable segment

	For the years ended December 31,
	2011			2010			2009
Revenues:
U.S. Operations	$	1,871,182		$	1,584,734		$	964,358
Canadian and U.K. Operations		698,054			—			—
Other		2,122			2,996			2,469
Total Revenues(a)	$	2,571,358		$	1,587,730		$	966,827
Segment operating income (loss):(b)
U.S. Operations	$	565,731		$	634,442		$	231,256
Canadian and U.K. Operations		67,349			—			—
Other		(74,477	)		(40,380	)		(29,086	)
Operating income		558,603			594,062			202,170
Less interest expense, net		(96,214	)		(16,466	)		(18,176	)
Other income, net		17,606			—			—
Income from continuing operations before income tax expense		479,995			577,596			183,994
Income tax expense		(130,819	)		(188,171	)		(42,144	)
Income from continuing operations	$	349,176		$	389,425		$	141,850

	For the years ended December 31
	2011		2010		2009
Depreciation and depletion:
U.S. Operations	$	151,341	$	98,170	$	72,533
Canadian and U.K. Operations		93,392		—		—
Other		776		532		406
Total	$	245,509	$	98,702	$	72,939
Capital expenditures:
U.S. Operations	$	149,996	$	152,299	$	95,672
Canadian and U.K. Operations		264,476		—		—
Other		94		5,177		626
Total	$	414,566	$	157,476	$	96,298

	As of December 31,
	2011		2010		2009
Identifiable assets by segment:
U.S. Operations	$	1,087,430	$	1,021,534	$	800,238
Canadian and U.K. Operations		5,008,237		—		—
Other		716,536		630,319		443,920
Assets of discontinued operations		—		5,912		15,198
Total	$	6,812,203	$	1,657,765	$	1,259,356
Long-lived assets by country:
U.S.	$	1,069,863	$	790,001	$	522,931
Canada		3,191,615		—		—
U.K.		321,817		—		—
Total	$	4,583,295	$	790,001	$	522,931

(a)

Export sales were $2.0 billion, $1.2 billion and $728.4 million for the years ended December 31, 2011, 2010 and 2009, respectively. Export sales to customers in foreign countries in excess of 10% of consolidated revenues for the years ended December 31, 2011, 2010 and 2009 were as follows:

	Percent of Consolidated Revenues For the years ended December 31,
Country	2011			2010			2009
Brazil		10.5	%		24.9	%		20.2	%
U.K.		6.2	%		10.3	%		12.6	%
Germany		9.8	%		13.7	%		14.0	%

(b)

Segment operating income (loss) amounts include expenses for postretirement benefits. A breakdown by segment of postretirement benefits (income) expense is as follows (in thousands):

	For the years ended December 31,
	2011			2010			2009
U.S. Operations	$	41,745		$	43,228		$	31,902
Canadian and U.K. Operations		—			—			—
Other		(1,360	)		(1,750	)		(1,069	)
	$	40,385		$	41,478		$	30,833

Schedule of export sales to customers in foreign countries in excess of 10% of consolidated revenues

	Percent of Consolidated Revenues For the years ended December 31,
Country	2011			2010			2009
Brazil		10.5	%		24.9	%		20.2	%
U.K.		6.2	%		10.3	%		12.6	%
Germany		9.8	%		13.7	%		14.0	%

Schedule of breakdown by segment of postretirement benefits (income) expense

	For the years ended December 31,
	2011			2010			2009
U.S. Operations	$	41,745		$	43,228		$	31,902
Canadian and U.K. Operations		—			—			—
Other		(1,360	)		(1,750	)		(1,069	)
	$	40,385		$	41,478		$	30,833