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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operating activities: |  |  |
Net loss | $ (19,360,853) | $ (11,065,842) | $ (11,803,719)
Reconciliation of net loss to cash used in operations: |  |  |
Accretion/amortization of asset retirement obligations | 85,181 | 121,183 | 155,943
Depreciation and depletion | 556,993 | 727,245 | 899,738
Impairment of uranium properties | 1,737,359 | 1,460,170 | 961,278
Decrease in restoration and reclamation accrual | (1,767,289) | (1,530,303) | (1,373,228)
Stock compensation expense | 427,292 | 883,941 | 1,032,308
Other non-cash items, net | 73,932 | 2,289 | 19,700
Effect of changes in operating working capital items: |  |  |
(Increase) decrease in receivables | (148,465) | (77,092) | 17,646
(Increase) decrease in prepaid and other current assets | (88,578) | 13,722 | (53,831)
Increase (decrease) in payables, accrued liabilities and deferred credits | (116,223) | (802,560) | 1,334,939
Net cash used in operating activities | (18,600,651) | (10,267,247) | (8,809,226)
Cash flows from investing activities: |  |  |
(Increase) decrease in certificates of deposit, restricted | 161,834 | (2,042,428) | (551,366)
Additions to uranium properties | (1,278,745) | (455,850) | (365,385)
Acquisition of Neutron Energy, Inc. | (3,677,133) |  |
Net cash used in investing activities | (4,794,044) | (2,498,278) | (916,751)
Cash flows from financing activities: |  |  |
Proceeds from notes payable | 5,000,000 |  |
Payments on borrowings | (95,664) | (83,539) | (117,710)
Issuance of common stock, net | 20,264,692 | 352,855 | 19,138,091
Net cash provided by financing activities | 25,169,028 | 269,316 | 19,020,381
Net increase (decrease) in cash and cash equivalents | 1,774,333 | (12,496,209) | 9,294,404
Cash and cash equivalents, beginning of year | 2,890,263 | 15,386,472 | 6,092,068
Cash and cash equivalents, end of year | 4,664,596 | 2,890,263 | 15,386,472
Cash paid during the year for : |  |  |
Interest | 14,100 | 19,000 | 25,400
Non-cash transactions: |  |  |
Common stock issued to acquire Neutron Energy, Inc. | 16,577,000 |  |
Common stock issuance for loan origination fees | 160,000 |  |
Capital lease additions | 106,200 |  |
Common stock issuance for deferred compensation |  | 697,027 |
Restricted stock issued for services | 39 | 17 | 28
Restricted stock issuance for cash conservation plan |  |  | $ 106,500

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