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INVENTORIES (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
INVENTORIES |  |
Ore in stockpiles and on leach pads | $ 108,161 | $ 90,536
Concentrates and dore bars | 123,047 | 108,193
Supplies | 269,768 | 244,985
Total current inventories | 500,976 | 443,714
Non-current ore in stockpiles and on leach pads | 69,587 | 62,780
Total inventories | 570,563 | 506,494
Inventory write-down | $ 2,500 | $ 6,600

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- Definition The amount of assets: (a) held for sale in the ordinary course of business; (b) in the process of production for such sale; or (c) in the form of materials or supplies to be consumed in the production process or in the rendering of services. Inventories encompass goods purchased and held for resale including, for example, merchandise purchased by a retailer and held for resale, or land and other property held for resale. Inventories also encompass finished goods produced, or work in progress being produced, by the entity and include materials and supplies awaiting use in the production process. [Refer: Current finished goods; Current merchandise; Current work in progress; Land] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_g&doctype=Standard -URIDate 2017-03-09 + Details
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