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v2.4.1.9

Reclamation (Tables) | 3 Months Ended
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Mar. 31, 2015
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligation |
| Three months ended March 31,
In thousands | 2015 |  | 2014
Asset retirement obligation - Beginning | $ | 67,214 |  |  | $ | 57,454 |
Accretion | 1,412 |  |  | 1,317 |
Additions and changes in estimates | 18,292 |  |  | — |
Settlements | (859 | ) |  | (311 | )
Asset retirement obligation - Ending | $ | 86,059 |  |  | $ | 58,460 |

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