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PRODUCTION COSTS (Tables)
 12 Months Ended
Dec. 31, 2020
Analysis of income and expense [abstract]  
Disclosure of cost of good sold, production costs
Years ended December 31 2020 2019
Labour $ 120,306  $ 110,022 
Raw materials and consumables 137,215  130,007 
Contractors 58,068  42,715 
Royalties 57,496  33,771 
Change in inventory and capitalized costs (340,437) (33,022)
Acquired inventories (note 4(a)) 349,767  — 
Other 36,237  46,317 
$ 418,652  $ 329,810