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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]  
Property Plant And Equipment Estimated Useful Lives [Table Text Block]
Property and equipment are carried at cost net of accumulated depreciation and amortization. Depreciation and amortization are computed on the straight-line method over the estimated useful lives of the assets, or the life of the lease, whichever is shorter, as follows:
 
  
Estimated
 
  
Useful Life
(years)
 
Building and Building Improvements
 
5 – 40
 
Mining Equipment
 
2 – 7
 
Office and Shop Furniture and Equipment
 
3 – 7
 
Vehicles
 5