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Note 18 - Inventories - Components of Inventory (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Statement Line Items [Line Items] |  |
Consumable stores | $ 9,210 | $ 8,776
Gold in process | 217 | 399
Inventories | $ 9,427 | $ 9,175

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