CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
CASH (USED IN) PROVIDED BY: OPERATING ACTIVITIES
Net loss for the period	$ (13,058,828)	$ (12,885,833)
Adjustments to reconcile net loss to net cash from operating activities
Stock-based compensation	752,136	729,440
Depletion, depreciation, amortization and accretion	2,269,063	1,343,285
Impairment loss on mineral property	28,891	0
Loss (gain) on disposition of assets	2,553	(4,963)
Loss on fair value of variable share forward contract	268,601	0
Gain on settlement of accounts payable	0	(10,909)
Loss on settlement of asset retirement obligations	1,037	30,511
Changes in operating assets and liabilities
Accounts and interest receivable	(4,602)	(29,994)
Inventories	(605,266)	571,146
Prepaid expenses and deposits	(109,086)	(173,234)
Accounts payable and accrued liabilities	(804,376)	(1,306,848)
Settlement of asset retirement obligations	(13,183)	(83,935)
NET CASH FLOWS USED IN OPERATING ACTIVITIES	(11,273,060)	(11,821,334)
FINANCING ACTIVITIES
Shares issuance for cash, net of issuance costs	6,633,077	41,648
Debt financing costs	(357,497)	0
Due to related parties	(960)	(44,443)
NET CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES	6,274,620	(2,795)
INVESTING ACTIVITIES
Investment in mineral rights and properties	(111,800)	(243,989)
Purchase of property, plant and equipment	(27,369)	(142,462)
Proceeds from disposition of assets	600	5,000
Reclamation deposits	(852)	(495,889)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(139,421)	(877,340)
NET CASH FLOWS	(5,137,861)	(12,701,469)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	14,171,807	25,015,284
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 9,033,946	$ 12,313,815