Consolidated Statements of Cash Flows (Unaudited) (Under Creditor Protection Proceedings as of November 29, 2011 - note 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended		163 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2011
Operating Activities
Net loss	$ (10,303)	$ (25,115)	$ (729,432)
Non-cash adjustments to net loss
Stock-based compensation	68	967	148,187
Deferred income tax expense (benefit)	0	(3,024)	(133,386)
Depreciation and accretion	2,650	2,221	12,725
Asset retirement obligation expensed	537	8,087	25,408
Impairment of property and equipment	40	2,243	346,703
Other non-cash items	633	0	2,418
Asset retirement expenditures	0	(4,431)	(4,585)
Net lease expenditures	(71)	0	(71)
Changes in Non-Cash Working Capital
Accounts receivable and prepaid expenses	(417)	876	(1,088)
Accounts payable and accrued liabilities	1,704	3,262	8,508
Changes in non-cash working capital related to assets held for sale	(3,200)	108	532
Cash Used in Operating Activities	(8,359)	(14,806)	(324,081)
Investing Activities
Property and equipment expenditures	(1,886)	(2,960)	(86,096)
Proceeds on sale of equipment	80	0	80
Restricted cash	(974)	(922)	(2,836)
Other investments	0	0	(548)
Cash Used in Investing Activities	(2,780)	(3,882)	(89,400)
Financing Activities
Issuance of shares for cash, net of issue costs	0	17,942	398,396
Shares issued on exercise of subsidiary options and warrants		212	4,505
Shares issued by subsidiary to non-controlling interest	0	0	7,664
Convertible debentures	0	0	8,384
Cash Provided by Financing Activities	0	18,154	418,949
Inflow (Outflow) of cash and cash equivalents	(11,139)	(534)	5,468
Effects of exchange rate changes on cash and cash equivalents	(313)	(345)	(936)
Cash and cash equivalents, Beginning of Period	15,984	18,642	0
Cash and cash equivalents, End of Period	4,532	17,763	4,532
Non-Cash Financing Activities
Common stock issued for properties	0	0	10,848
Warrants issued for properties	0	0	1,764
Common stock issued for services	0	0	10,505
Common stock issued for debt settlement	$ 0	$ 0	$ 28,401