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5. PROPERTY, PLANT AND EQUIPMENT, NET (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Mineral rights	$ 6,471,632	$ 6,530,158
Buildings	52,865,338	53,343,419
Plant and machinery	171,332,909	172,842,611
Motor vehicles	9,339	9,423
Furniture, fixtures and office equipment	4,858,688	4,902,627
Total	235,537,906	237,628,238
Less: Accumulated depreciation and amortization	(97,221,803)	(91,227,802)
Net book value	$ 138,316,103	$ 146,400,436

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Vehicles Gross

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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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Carrying amount at the balance sheet date of mineral properties, gross of adjustments.

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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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