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v3.23.3

Reclamation (Tables) | 9 Months Ended
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Sep. 30, 2023
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligation |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
In thousands | 2023 |  | 2022 |  | 2023 |  | 2022
Asset retirement obligation - Beginning | $ | 207,960 |  |  | $ | 184,606 |  |  | $ | 202,431 |  |  | $ | 180,156 |
Accretion | 4,153 |  |  | 3,564 |  |  | 12,219 |  |  | 10,482 |
Additions and changes to estimates | (2,682) |  |  | — |  |  | (2,682) |  |  | — |
Settlements | (1,415) |  |  | (1,507) |  |  | (3,952) |  |  | (3,975) |
Asset retirement obligation - Ending | $ | 208,016 |  |  | $ | 186,663 |  |  | $ | 208,016 |  |  | $ | 186,663 |
The commencement of production from the new leach pad and process plant at Rochester in the third quarter of 2023 resulted in an update to the estimated reclamation and mine closure costs. The estimated reclamation and mine closure costs was discounted using a credit adjusted, risk-free interest rate of 8.4%.

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