Note 5 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($)	Oct. 31, 2020	Jul. 31, 2020
Cost	$ 12,574,836	$ 12,571,933
Accumulated Depreciation	(5,599,837)	(5,552,116)
Net Book Value	6,974,999	7,019,817
Hobson Processing Facility [Member]
Cost	6,642,835	6,642,835
Accumulated Depreciation	(793,218)	(773,933)
Net Book Value	5,849,617	5,868,902
Mining Equipment [Member]
Cost	2,393,579	2,393,579
Accumulated Depreciation	(2,346,194)	(2,342,518)
Net Book Value	47,385	51,061
Logging Equipment and Vehicles [Member]
Cost	1,924,969	1,924,969
Accumulated Depreciation	(1,749,674)	(1,736,806)
Net Book Value	175,295	188,163
Computer Equipment [Member]
Cost	553,146	550,243
Accumulated Depreciation	(494,497)	(486,467)
Net Book Value	58,649	63,776
Furniture and Fixtures [Member]
Cost	170,701	170,701
Accumulated Depreciation	(170,089)	(169,946)
Net Book Value	612	755
Land and Building [Member]
Cost	889,606	889,606
Accumulated Depreciation	(46,165)	(42,446)
Net Book Value	$ 843,441	$ 847,160

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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