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INVENTORIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Classes of current inventories [abstract] |
Disclosure of Inventories [Table Text Block] |
|  | As at December 31, |
|  | 2020 |  |  | 2019 |
Ore stockpiles |  | 21,946 |  |  | 6,657 |
Copper contained in concentrate |  | 7,948 |  |  | 9,055 |
Molybdenum concentrate |  | 398 |  |  | 230 |
Materials and supplies |  | 28,549 |  |  | 27,678 |
|  | 58,841 |  |  | 43,620 |

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