Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jan. 31, 2021	Jul. 31, 2020
CURRENT ASSETS
Cash and cash equivalents	$ 8,713,193	$ 5,147,703
Term deposits	4,000,000
Inventories	211,662	211,662
Prepaid expenses and deposits	1,399,645	1,111,152
Other current assets	113,370	119,362
TOTAL CURRENT ASSETS	14,437,870	6,589,879
MINERAL RIGHTS AND PROPERTIES	63,734,753	63,655,503
PROPERTY, PLANT AND EQUIPMENT	7,446,299	7,019,817
RESTRICTED CASH	1,839,300	1,839,216
EQUITY-ACCOUNTED INVESTMENT	11,961,434	11,515,327
OTHER NON-CURRENT ASSETS	722,963	769,875
TOTAL ASSETS	100,142,619	91,389,617
CURRENT LIABILITIES
Accounts payable and accrued liabilities	1,576,236	1,858,499
Due to a related party	16,520	31,334
Other current liabilities	131,466	147,569
TOTAL CURRENT LIABILITIES	19,467,523	2,037,402
ASSET RETIREMENT OBLIGATIONS	3,836,484	3,734,314
OTHER NON-CURRENT LIABILITIES	485,687	479,714
DEFERRED TAX LIABILITIES	543,143	545,000
TOTAL LIABILITIES	24,495,776	26,972,999
STOCKHOLDERS' EQUITY
Common stock $0.001 par value: 750,000,000 shares authorized, 200,142,556 shares issued and outstanding (July 31, 2020 - 184,635,870)	200,142	184,636
Additional paid-in capital	360,110,479	341,059,972
Share issuance obligation	143,563	103,554
Accumulated deficit	(285,235,896)	(276,811,300)
Accumulated other comprehensive loss	428,555	(120,244)
TOTAL EQUITY	75,646,843	64,416,618
TOTAL LIABILITIES AND EQUITY	100,142,619	91,389,617
Other Loans Payable [Member]
CURRENT LIABILITIES
Current portion of long-term debt	218,129
Other Loans Payable, Noncurrent	162,939	307,092
Credit Agreement [Member]
CURRENT LIABILITIES
Current portion of long-term debt	17,525,172
Other Loans Payable, Noncurrent		$ 19,869,477