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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Cash flows from operating activities: |  |  |
Net loss | $ (15,624,373) | $ (11,199,397) | $ (10,354,567)
Reconciliation of net loss to cash used in operations- |  |  |
Accretion/amortization of restoration reserve | 85,181 | 121,183 | 155,943
Depreciation and depletion | 556,993 | 727,245 | 899,738
Writedown of uranium properties and exploration expenses | 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 and accrued liabilities and deferred credits | (116,223) | (802,560) | 1,334,939
Net cash used in operating activities | (14,864,171) | (10,400,802) | (7,360,074)
Cash flows from investing activities: |  |  |
(Increase) decrease in certificate of deposit, restricted | 161,834 | (2,042,428) | (551,366)
Additions to property, plant and equipment- |  |  |
Proceeds from Joint Venture agreement |  | 300,000 |
Acquisition of Neutron Energy, Inc. | (3,677,133) |  |
Net cash used in investing activities | (8,530,524) | (2,364,723) | (2,365,903)
Cash flows from financing activities: |  |  |
Proceeds from note payable | 5,000,000 |  |
Payments of 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
Kingsville Dome |  |  |
Reconciliation of net loss to cash used in operations- |  |  |
Writedown of uranium properties and exploration expenses | 919,000 | 851,000 | 590,000
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (690,108) | (141,137) | (149,652)
Rosita |  |  |
Reconciliation of net loss to cash used in operations- |  |  |
Writedown of uranium properties and exploration expenses | 139,000 | 126,000 | 58,000
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (68,454) | (125,693) | (58,504)
Vasquez |  |  |
Reconciliation of net loss to cash used in operations- |  |  |
Writedown of uranium properties and exploration expenses | 679,000 | 483,000 | 313,000
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (101,874) | (97,200) | (77,500)
Rosita South |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (9,447) | (40,959) | (78,813)
Los Finados/Tecolote project |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (5,950) | (88,236) | (1,168,780)
Churchrock |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (2,770,833) | (58,838) | (138,541)
Crownpoint/Section 13 Drilling |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (283,625) | (34,921) | (119,624)
Other property |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | (519,690) | (35,311) | (23,123)
Juan Tefoya |  |  |
Additions to property, plant and equipment- |  |  |
Additions to property, plant and equipment | $ (565,244) |  |

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- Definition The cash outflow from temporary investment with specific maturity and interest rate that are prohibited for current use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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- Definition The net cash inflow or outflow in aggregate debt due to repayments and proceeds from additional borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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