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MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2021
MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT |
MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT | NOTE 8 MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT The cost and carrying value of mineral property interests and plant and equipment at December 31, 2021 and 2020 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2021 |  | December 31, 2020
Mineral property interests, cost | ​ | $ | 344,529 | ​ | $ | 314,719
Less: accumulated depletion | ​ | ​ | (47,197) | ​ | ​ | (34,601)
Mineral property interests, carrying value | ​ | $ | 297,332 | ​ | $ | 280,118
​ | ​ | ​ | ​ | ​ | ​ | ​
Plant and equipment, cost | ​ | ​ | ​ | ​ | ​ | ​
Land | ​ | $ | 8,949 | ​ | $ | 8,804
Construction in progress | ​ | ​ | 4,078 | ​ | ​ | 2,945
Plant and equipment | ​ | ​ | 76,887 | ​ | ​ | 72,188
Subtotal | ​ | $ | 89,914 | ​ | $ | 83,937
Less: accumulated depreciation | ​ |  | (44,942) | ​ | ​ | (34,943)
Plant and equipment, carrying value | ​ | $ | 44,972 | ​ | $ | 48,994
​ | ​ | ​ | ​ | ​ | ​ | ​
Mineral property interests and plant and equipment, carrying value | ​ | $ | 342,303 | ​ | $ | 329,112
​ Mineral property interest carrying value at December 31, 2021 and 2020 includes the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Name of Property/Complex |  | State/Province |  | Country |  | 2021 |  | 2020 |
Fox Complex | ​ | Ontario | ​ | Canada | ​ | $ | 37,678 | ​ | $ | 17,580 | ​
Lexam | ​ | Ontario | ​ | Canada | ​ | ​ | 41,595 | ​ | ​ | 41,595 | ​
Los Azules Copper Project |  | San Juan |  | Argentina | ​ | ​ | 191,490 | ​ | ​ | 191,490 | ​
Tonkin Properties |  | Nevada |  | United States | ​ |  | 4,833 | ​ |  | 4,833 | ​
Gold Bar Project |  | Nevada |  | United States | ​ |  | 11,790 | ​ |  | 14,675 | ​
Battle Mountain Complex |  | Nevada |  | United States | ​ |  | 785 | ​ |  | 785 | ​
El Gallo Project |  | Sinaloa |  | Mexico | ​ |  | 3,353 | ​ |  | 3,353 | ​
Fenix Project Properties |  | Sinaloa |  | Mexico | ​ |  | 5,807 | ​ |  | 5,807 | ​
Total mineral property interests | ​ | ​ | ​ | ​ | ​ | $ | 297,332 | ​ | $ | 280,118 | ​
​ Black Fox and Gold Bar mineral property interest are depleted based on the units of production method from production commencement date over the estimated proven and probable reserves. The El Gallo Project is depleted and depreciated using the straight line or units-of-production method over the stated mine life, as the project does not have proven and probable reserves compliant with S-K 1300. The definition of proven and probable reserves is set forth in the S-K 1300. If proven and probable reserves exist at the Company’s properties, the relevant capitalized mineral property interests and asset retirement costs are charged to expense based on the units of production method upon commencement of production. The Company’s Gold Bar, Black Fox and San José properties have proven and probable reserves estimated in accordance with SEC Industry S-K 1300. The Company conducts a review of potential triggering events for impairment for all its mineral projects on a quarterly basis or when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. During the year ended December 31, 2021, no indicators of impairment have been noted for any of the Company’s mineral property interests. The Company’s evaluation resulted in an impairment charge of $83.8 million for the year ended December 31, 2020.

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