XML 61 R47.htm IDEA: XBRL DOCUMENT v3.3.1.900
5. PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Abstract]    
Mineral rights $ 6,131,230 $ 6,506,668
Buildings 68,510,164 53,231,127
Plant and machinery 195,295,877 177,485,689
Motor vehicles 8,847 9,389
Furniture, fixtures and office equipment 4,864,619 $ 4,884,991
Construction in progress 57,596
Total 274,868,333 $ 242,117,864
Less: Accumulated depreciation and amortization (146,997,010) (117,767,083)
Net book value $ 127,871,323 $ 124,350,781