Note 5 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($)	Jan. 31, 2021	Jul. 31, 2020
Cost	$ 13,062,538	$ 12,571,933
Accumulated Depreciation	(5,616,239)	(5,552,116)
Net Book Value	7,446,299	7,019,817
Hobson Processing Facility [Member]
Cost	6,642,835	6,642,835
Accumulated Depreciation	(812,504)	(773,933)
Net Book Value	5,830,331	5,868,902
Mining Equipment [Member]
Cost	2,393,579	2,393,579
Accumulated Depreciation	(2,349,914)	(2,342,518)
Net Book Value	43,665	51,061
Logging Equipment and Vehicles [Member]
Cost	1,935,469	1,924,969
Accumulated Depreciation	(1,760,511)	(1,736,806)
Net Book Value	174,958	188,163
Computer Equipment [Member]
Cost	528,113	550,243
Accumulated Depreciation	(472,803)	(486,467)
Net Book Value	55,310	63,776
Furniture and Fixtures [Member]
Cost	184,941	170,701
Accumulated Depreciation	(170,623)	(169,946)
Net Book Value	14,318	755
Land and Building [Member]
Cost	1,377,601	889,606
Accumulated Depreciation	(49,884)	(42,446)
Net Book Value	$ 1,327,717	$ 847,160