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Note 16 - Inventories - Components of Inventory (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Statement Line Items [Line Items] |  |
Consumable stores | $ 8,776 | $ 6,884
Gold in process | 399 | 338
Inventories | $ 9,175 | $ 7,222

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