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5. PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Mineral rights	$ 6,512,242	$ 6,506,668
Buildings	72,909,702	53,231,127
Plant and machinery	186,178,788	177,485,689
Motor vehicles	9,397	9,389
Furniture, fixtures and office equipment	5,166,920	4,884,991
Total	270,777,049	242,117,864
Less: Accumulated depreciation and amortization	(143,126,756)	(117,767,083)
Net book value	$ 127,650,293	$ 124,350,781

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Vehicles Gross

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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