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SIGNIFICANT ACCOUNTING POLICIES (Details)
 12 Months Ended
Dec. 31, 2017
Office equipment, furniture, and fixtures [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation rates and methods of plant and equipment 20% declining balance
Computer equipment [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation rates and methods of plant and equipment 30% declining balance
Mine machinery and transportation equipment [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation rates and methods of plant and equipment 20% declining balance
Mill machinery and processing equipment [Member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation rates and methods of plant and equipment 20 years straight line
Buildings [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Depreciation rates and methods of plant and equipment 20 years straight line