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Impairment of Non-Current Assetes (Tables) | 12 Months Ended
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Dec. 31, 2019
Impairment and Reversal of Impairment and Goodwill [Abstract] |
Sensitivity analysis of metal prices | Metal prices used at December 31, 2019:
Metal Prices | 2020-2022 average
Silver price - $/oz. | $17.94
Gold price - $/oz. | $1,474
Metal prices used at December 31, 2018:
Metal Prices | 2019-2022 average
Silver price - $/oz. | $17.07
Gold price - $/oz. | $1,300

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