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SIGNIFICANT ACCOUNTING POLICIES (Details Textual)
12 Months Ended
May 31, 2016
USD ($)
shares
May 31, 2015
USD ($)
shares
May 31, 2016
CAD
May 31, 2015
CAD
SIGNIFICANT ACCOUNTING POLICIES [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 7,981,000 7,396,334    
Asset Retirement Obligations, Noncurrent $ 224,000 $ 107,000 CAD 293,578 CAD 132,579
Computer Equipment [Member]        
SIGNIFICANT ACCOUNTING POLICIES [Line Items]        
Property, Plant and Equipment, Depreciation Methods 30% declining balance      
Vehicles [Member]        
SIGNIFICANT ACCOUNTING POLICIES [Line Items]        
Property, Plant and Equipment, Depreciation Methods 30% declining balance      
Tent [Member]        
SIGNIFICANT ACCOUNTING POLICIES [Line Items]        
Property, Plant and Equipment, Depreciation Methods 20% declining balance