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ACCOUNTS RECEIVABLE (Tables)
12 Months Ended
May 31, 2020
Trade and other receivables [Abstract]  
Schedule of detailed information about trade and other receivables
  May 31  May 31 
  2020  2019 

Royalty and stream receivables

$ — $ 129,960 

GST and other tax recoverable

 180,943  195,350 

Other receivables

 51,099   
 $ 232,042 $ 325,310