PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2012

PROPERTY, PLANT AND EQUIPMENT

Schedule of Property, Plant and Equipment

        Property, plant and equipment consist of the following at December 31, (in thousands):

	2012			2011
Mining equipment and processing facilities	$	1,434,674		$	1,213,458
Land and mineral rights		303,725			176,357
Buildings, office equipment and improvements		208,351			183,712
Construction in progress		129,720			171,957
Mine development costs		285,393			229,036
Property, plant and equipment, at cost		2,361,863			1,974,520
Less accumulated depreciation, depletion and amortization		(832,293	)		(793,200	)
Total property, plant and equipment, net	$	1,529,570		$	1,181,320