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MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT | 9 Months Ended
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Sep. 30, 2019
MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT |
MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT | NOTE 7 MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT The definition of proven and probable reserves is set forth in the SEC Industry Guide 7. 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 compliant with SEC Industry Guide 7. The Company conducts a review of potential triggering events for impairment on all its mineral projects on a quarterly basis. When events or changes in circumstances indicate that the related carrying amounts may not be recoverable, the Company carries out a review and evaluation of these assets for impairment, in accordance with its accounting policy. During the nine months ended September 30, 2019, no such triggering events were identified with respect to the carrying values of the Company’s properties. The following table summarizes mineral property interests and plant and equipment at September 30, 2019 and December 31, 2018: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2019 |  | December 31, 2018
Mineral property interests | ​ | $ | 338,085 | ​ | $ | 326,086
Land | ​ |  | 8,745 | ​ |  | 8,699
Construction in progress | ​ | ​ | 3,520 | ​ | ​ | 74,643
Plant and equipment | ​ | ​ | 131,803 | ​ | ​ | 49,578
Subtotal | ​ | $ | 482,153 | ​ | $ | 459,006
Less: accumulated depreciation | ​ |  | (57,316) | ​ | ​ | (35,127)
Net carrying value | ​ | $ | 424,837 | ​ | $ | 423,879
​ Plant and equipment at September 30, 2019 includes $1.4 million of capitalized interest related to the Gold Bar mine (December 31, 2018 – $0.8 million). As at February 16, 2019, first production occurred at the Gold Bar mine and related construction-in-progress costs were transferred into the appropriate category of plant and equipment and mineral property interests and amortized. The Company’s leased assets include equipment, vehicles and office space; the assets are amortized on a straight-line basis over their estimated useful lives (see note 9 Leases). Leased assets at September 30, 2019 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2019
​ |  | Operating lease |  | Finance leases
Leased assets, cost | ​ | $ | 1,167 | ​ | $ | 8,048
Accumulated amortization | ​ | ​ | (441) | ​ | ​ | (864)
Net book value | ​ | $ | 726 | ​ | $ | 7,184
​

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