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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - CAD
12 Months Ended
May 31, 2016
May 31, 2015
Supplemental cash flow information    
Interest paid (received) CAD 5,113 CAD (11,661)
Income taxes paid (received) 0 0
Non-cash financing and investing transactions    
Shares issued to acquire mineral properties 11,250 64,600
Change in asset retirement obligations included in capitalized acquisition costs 153,825 132,579
Reclassification of contributed surplus on exercise of stock options CAD 95,748 CAD 7,376