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Schedule of Inventory, Current (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Concentrates and work-in-progress | $ 11,293 | $ 19,900
Inventory of ore in stockpiles | 8,798 | 7,767
Raw materials and consumables | 2,990 | 3,004
Inventory, Net | 23,081 | 30,671
Inventories | $ 23,081 | $ 30,671

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