PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following:

	As of December 31,
	2015		2014
	($ in thousands)
Machinery and equipment (1)	$	160,203	$	146,951
Buildings and improvements (1)	58,036		51,027
Land and improvements (1)	47,901		37,461
Mineral reserves	30,181		30,181
Construction in progress	9,555		24,172
Capitalized reclamation costs	2,445		2,332
Total cost	308,321		292,124
Accumulated depreciation and depletion	74,691		53,467
Net property, plant and equipment	$	233,630	$	238,657

(1) Includes assets under capital lease