Summary of Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Summary of quarterly results of operations

The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2012 and 2011 (In thousands, except per share data):



	Q1		Q2		Q3			Q4
2012
Sales of metals	$	204,564	$	254,406	$	230,593		$	205,929
Income (loss) from continuing operations	3,975		22,973		(15,821		)	37,550
Net income (loss)	3,975		22,973		(15,821		)	37,550
Depreciation, depletion, and amortization	52,592		61,024		52,844			52,397
Production costs	92,554		131,823		124,967			107,413
Exploration expenses	6,567		6,305		6,957			6,441
Other operating expenses (general and administrative, pre-development, and loss on impairment)	8,664		13,680		11,836			5,883
Cash provided by operating activities	17,002		113,203		79,735			61,694
Capital expenditures	31,647		32,238		29,972			21,784
Basic net income (loss) per share:
Income (loss) from continuing operations	0.04		0.26		(0.18		)	0.42
Net income (loss)	$	0.04	$	0.26	$	(0.18	)	$	0.42
Diluted net income (loss) per share:
Income (loss) from continuing operations	0.04		0.26		(0.18		)	0.42
Net income (loss)	$	0.04	$	0.26	$	(0.18	)	$	0.42



	Q1		Q2		Q3		Q4
2011
Sales of metals	$	199,624	$	231,090	$	343,575	$	246,911
Income from continuing operations	12,464		38,611		31,060		11,364
Net income	12,464		38,611		31,060		11,364
Depreciation, depletion, and amortization	50,041		57,641		58,652		58,166
Production costs	92,474		77,102		141,253		109,127
Exploration expenses	2,762		4,077		4,772		7,517
Other operating expenses	15,805		12,931		11,507		10,577
Cash provided by operating activities	35,786		111,065		181,911		87,411
Capital expenditures	15,918		25,764		38,099		40,207
Basic net income per share:
Income from continuing operations	0.14		0.43		0.35		0.13
Net income	$	0.14	$	0.43	$	0.35	$	0.13
Diluted net income per share:
Income from continuing operations	0.14		0.43		0.35		0.13
Net Income	$	0.14	$	0.43	$	0.35	$	0.13