CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
CASH (USED IN) PROVIDED BY: OPERATING ACTIVITIES
Net loss for the period	$ (7,297,623)	$ (5,558,311)
Adjustments to reconcile net loss to net cash from operating activities
Stock-based compensation	433,643	1,593,911
Depletion, depreciation, amortization and accretion	700,658	493,483
Loss on fair value of convertible debentures	0	25,955
Loss on settlement of convertible debentures	0	330,208
Gain on settlement of accounts payable	(10,909)	0
Loss on settlement of asset retirement obligations	8,572	0
Changes in operating assets and liabilities
Accounts and interest receivable	(52,276)	(14,620)
Inventories	278,474	(571,768)
Prepaid expenses and deposits	(136,436)	(186,077)
Accounts payable and accrued liabilities	(1,601,224)	(504,388)
Settlement of asset retirement obligations	(44,713)	(371,790)
NET CASH FLOWS USED IN OPERATING ACTIVITIES	(7,721,834)	(4,763,397)
FINANCING ACTIVITIES
Issuance of shares for cash	39,748	0
Settlement of convertible debentures	0	(1,051,854)
Due to related parties	(33,446)	61,752
NET CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES	6,302	(990,102)
INVESTING ACTIVITIES
Investment in mineral rights and properties	(7,396)	(685,044)
Purchase of property, plant and equipment	(103,190)	(340,543)
Reclamation deposits	(2,048)	(239,653)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(112,634)	(1,265,240)
NET CASH FLOWS	(7,828,166)	(7,018,739)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	25,015,284	30,724,051
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 17,187,118	$ 23,705,312