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PLANT AND EQUIPMENT AND MINERAL PROPERTIES (Narrative) (Details) - Roca Honda $ in Thousands | May 27, 2016 USD ($) shares
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Property, Plant and Equipment [Line Items] |
Number of shares issued (in shares) | shares | 1,212,173
Percentage of voting interests acquired | 40.00%
Value assigned of equity interest issued | $ 2,630
Cash payable | $ 4,500

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