CAPITAL STOCK (Tables)

12 Months Ended

Jul. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The expected life of these stock options was estimated using the simplified method, being the mid-point of the average vesting date and the end of the contractual term. The fair value of these options were estimated at the date of grant, using the Black-Scholes Option Valuation Model, with the following weighted average assumptions:

	Year Ended July 31,
	2018			2017			2016
Expected Risk Free Interest Rate		2.24	%		1.28	%		0.84	%
Expected Volatility		67.60	%		82.40	%		80.46	%
Expected Life in Years		3.1			2.9			2.9
Expected Dividend Yield		0	%		0	%		0	%
Contratual Term in Years		5.0			5.0			5.0
Weighted-Average Grant Date Fair Value	$	0.68		$	0.77		$	0.51

Schedule Of Share Transactions [Table Text Block]

A summary of the Company’s share transactions for Fiscal 2018, Fiscal 2017, and Fiscal 2016 are as follows:

	Common		Value per Share				Issuance
Period / Description	Shares Issued		Low		High		Value
Balance, July 31, 2015		97,834,087
Equity Financing		12,364,704	$	0.85	$	0.85	$	9,984,517
Credit Facility		1,711,933		0.83		1.20		1,700,000
Asset Acquisition		1,333,560		0.92		0.92		1,226,875
Settlement of Liabilities		487,574		0.93		0.93		453,444
Consulting Services		1,429,650		0.72		1.38		1,372,381
Options Exercised		682,167		0.33		0.33		225,115
Shares Issued Under Stock Incentive Plan		826,782		0.73		1.08		726,244
Balance, July 31, 2016		116,670,457
Equity Financing		17,330,836		1.50		1.50		25,996,254
Credit Facility		738,503		1.49		1.49		1,100,000
Asset Acquisition		61,939		1.35		1.43		87,617
Advance Royalty Payment		46,800		1.04		1.04		48,672
Settlement of Liabilities		1,015,940		1.03		1.54		1,524,650
Consulting Services		865,386		0.86		1.64		1,107,937
Warrants Exercised		1,989,717		1.20		1.20		2,387,660
Options Exercised (1)		264,727		0.45		1.32		146,448
Shares Issued Under Stock Incentive Plan		830,819		0.88		1.61		946,252
Balance, July 31, 2017		139,815,124
Credit Facility		641,574		1.40		1.40		900,000
Reno Creek Acquisitions		14,852,450		1.30		1.37		20,332,617
North Reno Creek Acquisition		1,691,215		1.61		1.61		2,722,856
Reimbursable Expenses for Reno Creek Acquisition		353,160		1.37		1.37		483,829
Diabase Acquisition		164,767		1.41		1.41		232,321
Consulting Services		225,168		1.19		1.84		349,834
Advance Royalty Payment		46,134		1.34		1.34		61,820
Warrants Exercised		61,799		1.20		1.20		74,159
Options Exercised (2)		1,094,589		0.45		1.32		710,410
Settlement of Liabilities		565,499		1.33		1.72		845,824
Shares Issued Under Stock Incentive Plan		1,664,285		1.06		1.77		2,349,721
Balance, July 31, 2018		161,175,764

(1)	309,634 options were exercised on a forfeiture basis resulting in 162,227 net shares issued.
(2)	580,624 options were exercised on a forfeiture basis resulting in 309,590 net shares issued.

Schedule Of Share based Compensation Warrants Activity [Table Text Block]

A continuity schedule of outstanding share purchase warrants is as follows:

	Number of			Weighted Average
	Warrants			Exercise Price
Balance, July 31, 2015		7,859,524			2.38
Issued		6,594,348			1.20
Expired		(500,000	)		1.00
Balance, July 31, 2016		13,953,872			1.65
Issued		9,571,929			2.00
Exercised		(1,989,717	)		1.20
Expired		(1,859,524	)		2.60
Balance, July 31, 2017		19,676,560			1.78
Issued		11,358,728			2.30
Exercised		(61,799	)		1.20
Expired		(50,000	)		1.95
Balance, July 31, 2018		30,923,489		$	1.97

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

A summary of share purchase warrants outstanding and exercisable at July 31, 2018 are as follows:

Weighted					Weighted Average
Average		Number of Warrants			Remaining Contractual
Exercise Price		Outstanding		Expiry Date	Life (Years)
$	1.20		4,542,832	March 10, 2019		0.61
	1.35		2,600,000	January 30, 2020		1.50
	1.64		50,000	May 21, 2023		4.80
	2.00		9,571,929	January 20, 2020		1.47
	2.30		11,308,728	August 9, 2022		4.02
	2.35		2,850,000	September 24, 2018		0.15
$	1.97		30,923,489			2.16

Share-based Compensation, Stock Options, Activity [Table Text Block]

A continuity schedule of outstanding stock options at July 31, 2018, and the changes during the periods, is as follows:

	Number of Stock			Weighted Average
	Options			Exercise Price
Balance, July 31, 2015		10,581,975		$	1.38
Granted		3,033,000			1.02
Exercised		(682,167	)		0.33
Expired		(1,950	)		5.90
Forfeited		(825,000	)		1.48
Balance, July 31, 2016		12,105,858			1.34
Granted		672,500			1.11
Exercised		(412,134	)		0.56
Expired		(100,724	)		4.35
Forfeited		(5,000	)		0.93
Balance, July 31, 2017		12,260,500		$	1.33
Granted		4,083,000			1.40
Exercised		(1,365,625	)		0.70
Forfeited		(66,250	)		1.24
Balance, July 31, 2018		14,911,625		$	1.41

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

A continuity schedule of outstanding non-vested stock options at July 31, 2018, and the changes during the periods, is as follows:

	Number of Unvested			Weighted Average
	Stock Options			Grant-Date Fair Value
Balance, July 31, 2015		3,820,000		$	0.51
Granted		3,033,000			0.51
Vested		(4,350,000	)		0.51
Forfeited		(180,000	)		0.50
Balance, July 31, 2016		2,323,000			0.51
Granted		672,500			0.77
Vested		(2,224,750	)		0.56
Forfeited		(5,000	)		0.49
Balance, July 31, 2017		765,750			0.58
Granted		4,083,000			0.68
Vested		(1,303,000	)		0.65
Forfeited		(66,250	)		0.62
Balance, July 31, 2018		3,479,500		$	0.68

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

A summary of stock options outstanding and exercisable at July 31, 2018 is as follows:

	Options Outstanding						Options Exercisable
Range of ‎Exercise Prices	Outstanding at ‎July 31, 2018		Weighted ‎ Average Exercise Price		Weighted Average ‎Remaining ‎Contractual Term ‎(Years)		Exercisable at ‎July 31, 2018		Weighted ‎Average ‎Exercise Price		Weighted Average ‎ Remaining Contractual Term (Years)
$0.45 to $0.99		1,860,500	$	0.93		2.87		1,860,500	$	0.93		2.87
$1.00 to $1.65		11,778,625		1.33		2.47		8,299,125		1.28		1.57
$1.66 to $3.86		1,272,500		2.89		2.33		1,272,500		2.89		2.33
		14,911,625	$	1.41		2.51		11,432,125	$	1.41		1.87

Schedule Of Stock based Compensation Expense [Table Text Block]

A summary of stock-based compensation expense for Fiscal 2018, Fiscal 2017, and Fiscal 2016 is as follows:

	Year Ended July 31,
	2018			2017		2016
Stock-Based Compensation for Consultants
Common stock issued for consulting services	$	740,640		$	1,184,660	$	1,630,635
Amortization of stock option expense		582,842			469,815		78,014
		1,323,482			1,654,475		1,708,649
Stock-Based Compensation for Management
Common stock issued to management		702,505			686,584		262,130
Amortization of stock option expense		284,556			473,811		735,991
		987,061			1,160,395		998,121
Stock-Based Compensation for Employees
Common stock issued to employees		773,899			584,837		205,860
Amortization of stock option expense		547,231			369,663		171,533
		1,321,130			954,500		377,393
Settlement of share issuance obligation		(127,615	)		-		-
	$	3,504,058		$	3,769,370	$	3,084,163

2017 Offering Warrant [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The shares were valued at the Company’s closing price of $1.54 per share at January 20, 2017. The share purchase warrants were valued using the Black-Scholes option pricing model with the following assumptions:

Expected Risk Free Interest Rate	1.50	%
Expected Annual Volatility	76.96	%
Expected Contractual Life in Years	3.00
Expected Annual Dividend Yield	0.00	%

Schedule of Stockholders Equity [Table Text Block]

The net proceeds from the January 2017 Offering were allocated to the fair values of the shares and share purchase warrants as presented below:

Fair Value of Shares	$	26,689,487
Fair Value of Share Purchase Warrants		5,873,932
Total Fair Value Before Allocation to Net Proceeds	$	32,563,419
Gross Proceeds	$	25,996,254
Share Issuance Costs - Cash		(1,550,843	)
Net Cash Proceeds Received	$	24,445,411
Relative Fair Value Allocation to:
Shares	$	20,035,841
Share Purchase Warrants		4,409,570
	$	24,445,411

2016 Offering Warrant [Member]

Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The shares were valued at the Company’s closing price of $0.81 per share at March 10, 2016. The share purchase warrants were valued using the Black-Scholes option pricing model with the following assumptions:

Expected Risk Free Interest Rate	1.11	%
Expected Annual Volatility	74.34	%
Expected Contractual Life in Years	3.00
Expected Annual Dividend Yield	0.00	%

Schedule of Stockholders Equity [Table Text Block]

The net proceeds from the March 2016 Offering were allocated to the fair value of the shares and share purchase warrants as presented below:

Fair Value of Shares	$	10,015,410
Fair Value of Share Purchase Warrants		1,938,995
Total Fair Value Before Allocation to Net Proceeds	$	11,954,405
Gross Proceeds	$	10,510,000
Share Issuance Costs - Cash		(525,483	)
Net Cash Proceeds Received	$	9,984,517
Relative Fair Value Allocation to:
Shares	$	8,365,037
Share Purchase Warrants		1,619,480
	$	9,984,517