Note 5 - Property, Plant and Equipment - Property, Plant and Equipment Consisted (Details) - USD ($)	Jan. 31, 2019	Jul. 31, 2018
Cost	$ 12,729,581	$ 12,897,160
Accumulated Depreciation	(5,646,150)	(5,795,608)
Net Book Value	7,083,431	7,101,552
Hobson Processing Facility [Member]
Cost	6,819,088	6,819,088
Accumulated Depreciation	(773,933)	(773,933)
Net Book Value	6,045,155	6,045,155
Mining Equipment [Member]
Cost	2,413,783	2,438,681
Accumulated Depreciation	(2,390,990)	(2,412,277)
Net Book Value	22,793	26,404
Logging Equipment and Vehicles [Member]
Cost	1,851,883	1,971,742
Accumulated Depreciation	(1,736,309)	(1,850,306)
Net Book Value	115,574	121,436
Computer Equipment [Member]
Cost	584,520	607,342
Accumulated Depreciation	(555,690)	(577,584)
Net Book Value	28,830	29,758
Furniture and Fixtures [Member]
Cost	170,701	170,701
Accumulated Depreciation	(169,096)	(168,814)
Net Book Value	1,605	1,887
Land and Building [Member]
Cost	889,606	889,606
Accumulated Depreciation	(20,132)	(12,694)
Net Book Value	$ 869,474	$ 876,912