CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
CASH (USED IN) PROVIDED BY: OPERATING ACTIVITIES
Net loss for the period	$ (19,755,935)	$ (16,785,878)
Adjustments to reconcile net loss to net cash from operating activities
Stock-based compensation	984,841	809,627
Depletion, depreciation, amortization and accretion	3,093,795	2,064,954
Impairment loss on mineral properties	457,055	0
Loss (gain) on disposition of assets	2,553	(4,249)
Loss on fair value of variable share forward contract	557,037	0
Gain on settlement of accounts payable	0	(10,909)
(Gain) loss on settlement of asset retirement obligations	(9,831)	32,389
Changes in operating assets and liabilities
Accounts and interest receivable	(8,088)	204,329
Inventories	(630,548)	638,939
Prepaid expenses and deposits	112,525	(172,454)
Accounts payable and accrued liabilities	(1,530,860)	(1,800,132)
Settlement of asset retirement obligations	(13,551)	(112,388)
NET CASH FLOWS USED IN OPERATING ACTIVITIES	(16,741,007)	(15,135,772)
FINANCING ACTIVITIES
Shares issuance for cash, net of issuance costs	6,562,076	43,564
Net proceeds from debt financing	9,554,467	0
Due to related parties	(868)	(22,151)
NET CASH FLOWS PROVIDED BY FINANCING ACTIVITIES	16,115,675	21,413
INVESTING ACTIVITIES
Investment in mineral rights and properties	(161,800)	(271,833)
Purchase of property, plant and equipment	(77,813)	(156,432)
Proceeds from disposition of assets	600	5,000
Reclamation deposits	(1,152)	(497,119)
NET CASH FLOWS USED IN INVESTING ACTIVITIES	(240,165)	(920,384)
NET CASH FLOWS	(865,497)	(16,034,743)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	14,171,807	25,015,284
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 13,306,310	$ 8,980,541