Cost Of Sales

3 Months Ended

Mar. 31, 2012

Cost of Goods Sold [Abstract]

Cost Of Sales

COST OF SALES

	For the three months ended March 31,
	2012			2011
Mining operations costs	$	100,849		$	88,479
Operations costs to metal inventory	(3,450		)	(2,690		)
Mining related depreciation and amortization	19,043			21,029
Accretion of asset retirement obligations	703			933
Total cost of sales	$	117,145		$	107,751