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INVENTORY (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of operating segments [line items] |  |
Write-downs (reversals of write-downs) of inventories | $ 0 | $ (5,710)
Finished goods | 23,433 | 19,262
Stockpiled ore | 18,195 | 6,806
Leach pad inventory | 162,335 | 128,783
Materials and supplies | 28,785 | 27,730
Current inventories | 232,748 | 182,581
Non-current materials and supplies (note 8) | 2,006 | 3,973
Inventories | 234,754 | 186,554
Inventory write-down | $ 3,436 | 7,250
Puna Operations |  |
Disclosure of operating segments [line items] |  |
Write-downs (reversals of write-downs) of inventories |  | $ (6,342)

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- Definition A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 2 -IssueDate 2018-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=2&date=2018-03-01&anchor=para_37&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78_c&doctype=Standard -URIDate 2018-03-16 + Details
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