CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Apr. 30, 2012	Apr. 30, 2011
CASH (USED IN) PROVIDED BY: OPERATING ACTIVITIES
Net loss for the period	$ (20,329,907)	$ (21,794,585)
Adjustments to reconcile net loss to net cash from operating activities
Stock based compensation	2,734,675	5,765,512
Impairment loss on mineral properties	0	128,339
Depreciation, amortization, depletion and accretion	1,526,110	768,329
Loss on disposition of assets	501	5,267
Gain on sale of investments	0	(8,652)
Loss on fair value of convertible debentures	49,681	0
Loss on settlement of convertible debentures	312,207	0
Gain on settlement of accounts payable	(144,285)	0
Changes in operating assets and liabilities
Accounts and interest receivable	(88,508)	(23,133)
Inventories	(1,505,455)	(1,062,766)
Prepaid expenses and deposits	(317,349)	(257,061)
Accounts payable and accrued liabilities	(150,510)	(1,823,267)
Settlement of asset retirement obligations	(737,130)	(870,504)
NET CASH FLOWS USED IN OPERATING ACTIVITIES	(18,649,970)	(19,172,521)
FINANCING ACTIVITIES
Issuance of shares for cash, net of issuance costs	21,499,668	34,304,984
Settlement of convertible debentures	(1,370,486)	0
Advances from (repayment) to related parties	2,089	(76,824)
NET CASH FLOWS PROVIDED BY FINANCING ACTIVITIES	20,131,271	34,228,160
INVESTING ACTIVITIES
Investment in mineral rights and properties	(3,878,707)	(457,861)
Purchase of property, plant and equipment	(947,560)	(282,294)
Loan associated with acquisition of Concentric Energy Corp.	0	(300,000)
Settlement of loan assumed from acquistion of Cue Resources Ltd.	(260,650)	0
Proceeds from disposition of assets	0	700
Proceeds from sale of investments	0	29,035
Reclamation deposit	(917,836)	(1,872,623)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(6,004,753)	(2,883,043)
NET CASH FLOWS	(4,523,452)	12,172,596
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	30,724,051	21,067,662
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 26,200,599	$ 33,240,258