SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	12 Months Ended
	Jul. 31, 2018
Computer Equipment [Member]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Furniture and Fixtures [Member]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Estimated Useful Lives	Term of lease
Building [Member]
Property, Plant and Equipment, Estimated Useful Lives	20 years
Hobson processing facility [Member]
Property, Plant and Equipment, Estimated Useful Lives	17 years
Mining and logging equipment and vehicles [Member] | Maximum [Member]
Property, Plant and Equipment, Estimated Useful Lives	10 years
Mining and logging equipment and vehicles [Member] | Minimum [Member]
Property, Plant and Equipment, Estimated Useful Lives	5 years