Properties, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment, Net

Depreciation is computed using the straight-line method over estimated useful lives as follows:

Building	7 to 15 years
Vehicles and equipment	3 to 7 years
Processing and laboratory	5 to 15 years
Furniture and fixtures	2 to 3 years

Properties, plant and equipment at December 31, 2015 and 2014 consisted of the following:

	2015			2014
Land and building	$	11,652,436		$	6,307,771
Vehicle and equipment	10,531,451			11,496,105
Processing and laboratory	21,049,497			19,274,195
Furniture and fixtures	901,425			901,425
	44,134,809			37,979,496
Less accumulated depreciation	(17,537,950		)	(11,772,434		)
Total properties, plant and equipment	$	26,596,859		$	26,207,062