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RECLAMATION AND REMEDIATION LIABILITIES | 9 Months Ended
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Sep. 30, 2025
Asset Retirement Obligation Disclosure [Abstract] |
RECLAMATION AND REMEDIATION LIABILITIES | RECLAMATION AND REMEDIATION LIABILITIES The Company is subject to various domestic and international laws and regulations governing the protection of the environment. These laws and regulations are continually changing and are generally becoming more restrictive. Estimated future reclamation costs are based principally on current legal and regulatory requirements. Çöpler Reclamation and Remediation During the first quarter of 2024, the Company estimated total reclamation and remediation costs of $250.0 million to $300.0 million related to the Çöpler Incident, in addition to the approximately $22.5 million incurred during the first quarter of 2024. The Company accrued the low end of the estimated cost range, recording total reclamation and remediation costs of $272.9 million inclusive of the $22.5 million incurred during the first quarter of 2024. During the second quarter of 2025, the Company recorded an adjustment of $62.9 million, comprising of $9.4 million related to reclamation costs and $53.5 million related to remediation costs. The revised estimate reflects an increase of $12.9 million above the previously disclosed estimated reclamation and remediation cost range. The revision in estimate reflects the Company's advancement of the engineering and construction design of the permanent storage facility and the advancement of the studies for the permanent closure of the heap leach pad. As part of the heap leach pad closure planning, the Company will conduct further field investigations to confirm the integrity of the heap leach pad liner. This will entail exposing and inspecting sections of the heap leach pad liner. Following completion of the liner inspection, the Company will use the findings to refine and update the closure plan for the heap leach pad. These studies and inspections may result in revisions to the scope of work, estimated costs, and overall timelines related to the heap leach pad closure. The Company did not record any adjustments during the third quarter of 2025. Changes in Reclamation and remediation liabilities during the nine months ended September 30, 2025 and 2024, were as follows (in thousands):
| Nine Months Ended September 30, 2025 |  | Nine Months Ended September 30, 2024
| Reclamation |  | Remediation |  | Total |  | Reclamation |  | Remediation |  | Total
Balance as of January 1 | $ | 209,923 |  |  | $ | 135,914 |  |  | $ | 345,837 |  |  | $ | 173,819 |  |  | $ | — |  |  | $ | 173,819 |
Additions (1) |  | 220,974 |  |  |  | — |  |  |  | 220,974 |  |  |  | — |  |  |  | 261,674 |  |  |  | 261,674 |
Changes in estimate and other (2) |  | 11,856 |  |  |  | 53,507 |  |  |  | 65,363 |  |  |  | 11,054 |  |  |  | — |  |  |  | 11,054 |
Expenditures |  | (4,259) |  |  |  | (13,032) |  |  |  | (17,291) |  |  |  | (1,913) |  |  |  | (125,306) |  |  |  | (127,219) |
Accretion expense |  | 18,249 |  |  |  | — |  |  |  | 18,249 |  |  |  | 7,243 |  |  |  | — |  |  |  | 7,243 |
Balance as of September 30 | $ | 456,743 |  |  | $ | 176,389 |  |  | $ | 633,132 |  |  | $ | 190,203 |  |  | $ | 136,368 |  |  | $ | 326,571 |
Less: current portion |  | (13,228) |  |  |  | (15,079) |  |  |  | (28,307) |  |  |  | (11,765) |  |  |  | (82,345) |  |  |  | (94,110) |
Non-current reclamation and remediation liabilities | $ | 443,515 |  |  | $ | 161,310 |  |  | $ | 604,825 |  |  | $ | 178,438 |  |  | $ | 54,023 |  |  | $ | 232,461 |
(1)During the nine months ended September 30, 2025, reclamation changes were primarily comprised of an increase of $221.0 million as a result of the acquisition of CC&V. During the nine months ended September 30, 2024, the Company recorded a remediation liability of $261.7 million as a result of the Çöpler Incident. The remediation activities include movement of the displaced heap leach material out of the Sabırlı Valley and Manganese pit, sloping and stabilization of the heap leach pad in preparation for permanent closure, construction of a permanent storage facility for the displaced heap leach material, and management of surface and ground water in the Sabırlı Valley. (2)During the nine months ended September 30, 2025, reclamation and remediation at Çöpler increased $9.4 million and $53.5 million, respectively, due to the revised estimate related to the closure of the Çöpler heap leach pad and construction estimate for the permanent storage facility during the second quarter of 2025. At Marigold, reclamation increased by $2.5 million during the nine months ended September 30, 2025, primarily due to additional disturbance and an increase in labor unit cost rates. During the nine months ended September 30, 2024, reclamation changes were comprised of an $11.1 million revision in the timing primarily related to the closure of the heap leach pad as a result of the Çöpler Incident. The following table includes the components of Reclamation and remediation costs for the three and nine months ended September 30, 2025 and 2024 (in thousands):
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024
Reclamation adjustments and other |  | $ | — |  |  | $ | — |  |  | $ | 9,419 |  |  | $ | 11,229 |
Reclamation accretion |  |  | 7,059 |  |  |  | 2,414 |  |  |  | 18,249 |  |  |  | 7,243 |
Total reclamation costs |  |  | 7,059 |  |  |  | 2,414 |  |  |  | 27,668 |  |  |  | 18,472 |
Remediation adjustments and other |  |  | 76 |  |  |  | — |  |  |  | 53,637 |  |  |  | 261,674 |
Total remediation costs |  |  | 76 |  |  |  | — |  |  |  | 53,637 |  |  |  | 261,674 |
Total reclamation and remediation costs |  | $ | 7,135 |  |  | $ | 2,414 |  |  | $ | 81,305 |  |  | $ | 280,146 |

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/410-20/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 20 -Topic 410 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-2 + Details
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