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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Significant Accounting Policies [Abstract] |
Plant and equipment | The major categories of plant and equipment are depreciated on a straight-line basis using the estimated lives indicated below:
Computer equipment | 3 - 7 years
Furniture and fixtures | 7 years
Vehicles | 2 - 5 years
Mining equipment | 5 - 9 years
Mobile equipment components | 2 - 9 years
Buildings | LOM
Mine plant equipment | LOM
Underground infrastructure | LOM
Leasehold improvements | Lease term

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