Consolidated Statement of Cash Flows (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
OPERATING ACTIVITIES
Net loss for the period	$ (5,017,557)	$ (4,146,646)	$ (10,818,657)	$ (13,056,299)
Adjustments to reconcile net loss to cash flows in operating activities
Stock-based compensation	554,732	518,585	2,143,598	2,133,359
Depreciation, amortization and accretion			259,970	268,066
Amortization of long-term debt discount	384,551	277,502	1,050,671	883,333
(Gain) loss on disposition of assets			(1,591,362)	1,696
Deferred tax benefits	(1,305)	(11,952)	(13,271)	(268,237)
Loss (income) from equity-accounted investment	872,851	10,134	590,819	(91,099)
Realized loss on available-for-sale securities			799
Reimbursable Expenses for Reno Creek Acquisition				483,829
Changes in operating assets and liabilities
Prepaid expenses and deposits			(408,301)	(265,985)
Other current assets			(18,481)	445
Accounts payable and accrued liabilities			(869,562)	(477,222)
Due to a related party			47,738	167
NET CASH FLOWS USED IN OPERATING ACTIVITIES			(9,626,039)	(10,387,947)
FINANCING ACTIVITIES
Proceeds from share issuance, net of issuance costs			23,843,995	328,300
NET CASH FLOWS PROVIDED BY FINANCING ACTIVITIES			23,843,995	328,300
INVESTING ACTIVITIES
Net cash and restricted cash received from asset acquisition				289,038
Investment in mineral rights and properties			(105,000)	(309,120)
Purchase of property, plant and equipment			(77,809)	(11,242)
Increase in other long-term assets				(188,400)
Purchase of short-term investments			(29,858,126)	(21,771,253)
Redemption of short-term investments			15,000,000	30,771,253
Proceeds from disposition of assets			12,498
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES			(15,028,437)	8,780,276
NET CASH FLOWS			(810,481)	(1,279,371)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD			8,716,422	14,282,001
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	$ 7,905,941	$ 13,002,630	$ 7,905,941	$ 13,002,630