Consolidated Balance Sheets (Unaudited) - USD ($)	Apr. 30, 2019	Jul. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 6,093,098	$ 6,926,523
Short-term investments	14,858,126
Inventories	211,662	211,662
Prepaid expenses and deposits	1,609,769	1,023,183
Other current assets	197,042	179,360
	22,969,697	8,340,728
MINERAL RIGHTS AND PROPERTIES	63,753,971	71,122,576
PROPERTY, PLANT AND EQUIPMENT	7,121,828	7,101,552
RESTRICTED CASH	1,812,843	1,789,899
EQUITY-ACCOUNTED INVESTMENT	9,058,803	693,502
OTHER LONG-TERM ASSETS	338,770	563,052
	105,055,912	89,611,309
CURRENT LIABILITIES
Accounts payable and accrued liabilities	1,445,201	2,314,763
Due to a related party	48,545	807
Current portion of long-term debt		10,000,000
	1,493,746	12,315,570
LONG-TERM DEBT	19,185,645	9,534,974
ASSET RETIREMENT OBLIGATIONS	4,192,304	4,020,282
DEFERRED TAX LIABILITIES	551,652	564,923
	25,423,347	26,435,749
STOCKHOLDERS' EQUITY
Common stock $0.001 par value: 750,000,000 shares authorized, 180,562,286 shares issued and outstanding (July 31, 2018 - 161,175,764)	180,562	161,176
Additional paid-in capital	335,440,377	308,062,379
Accumulated deficit	(255,866,652)	(245,151,636)
Accumulated other comprehensive income	(121,722)	103,641
	79,632,565	63,175,560
	105,055,912	89,611,309
COMMITMENTS AND CONTINGENCIES

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e681-108580