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INVENTORIES (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Dec. 31, 2018
Inventories |  |
Material on leach pads | $ 21,122 | $ 10,370
In-process inventory | 3,919 | 3,446
Stockpiles | 1,839 | 1,272
Precious metals | 2,404 | 3,421
Materials and supplies | 3,703 | 3,530
Current Inventories | 32,987 | 22,039
Other assets |  |
Inventories |  |
Non-current portion of ore on leach pads | $ 1,800 | $ 4,600

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