Acquisitions (Tables)

12 Months Ended

Dec. 31, 2011

Western Coal Corp

Acquisitions

Purchase consideration

Purchase consideration:
Cash	$	2,173,080
Fair value of shares of common stock issued		1,224,126
Fair value of stock options issued and warrants		34,765
Fair value of consideration transferred		3,431,971
Fair value of equity interest in Western Coal held before the acquisition		314,231
Total consideration	$	3,746,202

Fair value of assets acquired and liabilities assumed

	Preliminary September 30, 2011		Adjustments			Preliminary December 31, 2011
Fair value of assets acquired and liabilities assumed:
Cash and cash equivalents	$	34,065	$	—		$	34,065
Receivables		163,668		—			163,668
Inventories		122,012		(783	)		121,229
Other current assets		65,606		20,869			86,475
Mineral interests		4,399,000		(1,407,000	)		2,992,000
Property, plant and equipment		565,228		(4,334	)		560,894
Goodwill		277,404		845,480			1,122,884
Other long-term assets		54,150		—			54,150
Total assets		5,681,133		(545,768	)		5,135,365
Accounts payable and accrued liabilities		180,157		4,826			184,983
Other current liabilities		75,824		6,351			82,175
Deferred tax liability		1,576,896		(555,735	)		1,021,161
Other long-term liabilities		102,054		(1,210	)		100,844
Total liabilities		1,934,931		(545,768	)		1,389,163
Net assets acquired	$	3,746,202	$	—		$	3,746,202

Schedule of revenues and earnings from acquisition date

	For the year ended December 31, 2011
Revenues	$	846,682
Net income	$	60,538

Schedule of unaudited pro forma financial information

	For the years ended December 31,
	2011		2010
Revenues	$	2,795,566	$	2,358,040
Net income	$	403,945	$	325,196

HighMount Exploration and Production Alabama, LLC

Acquisitions

Fair value of assets acquired and liabilities assumed

Fair value of assets acquired and liabilities assumed:
Receivables	$	5,439
Other current assets		340
Property, plant and equipment		210,323
Identifiable intangible asset		1,505
Total assets		217,607
Accounts payable & accrued liabilities		(4,282	)
Asset retirement obligations		(3,361	)
Total liabilities		(7,643	)
Net assets acquired	$	209,964