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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET | 9 Months Ended
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Sep. 30, 2025
Property, Plant and Equipment [Abstract] |
MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET | MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET The components of Mineral properties, plant and equipment, net are as follows (in thousands):
| September 30, 2025 |  | December 31, 2024
Plant and equipment (1) | $ | 2,074,930 |  |  | $ | 1,883,193 |
Construction in process |  | 210,997 |  |  |  | 135,594 |
Mineral properties subject to depletion |  | 2,315,871 |  |  |  | 2,114,765 |
Mineral properties not yet subject to depletion |  | 895,409 |  |  |  | 884,029 |
Exploration and evaluation assets |  | 247,164 |  |  |  | 254,146 |
Total mineral properties, plant, and equipment |  | 5,744,371 |  |  |  | 5,271,727 |
Accumulated depreciation, plant and equipment |  | (898,877) |  |  |  | (804,411) |
Accumulated depletion, mineral properties |  | (729,424) |  |  |  | (684,449) |
Mineral properties, plant, and equipment, net | $ | 4,116,070 |  |  | $ | 3,782,867 |
(1)As of September 30, 2025 and December 31, 2024, plant and equipment includes finance lease right-of-use assets with a carrying amount of $74.3 million and $78.9 million, respectively. No impairment was recognized during the three and nine months ended September 30, 2025. During the three months ended September 30, 2024, the Company concluded that certain plant and equipment at Seabee was impaired and recorded a non-cash impairment of $0.4 million as a result of damage from the forest fires to remote equipment, including power poles, piping, and exploration equipment. During the nine months ended September 30, 2024, the Company concluded that certain mineral properties, plant and equipment at Seabee and Çöpler were impaired and recorded non-cash impairments of $0.4 million and $114.2 million, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477798/958-360-50-7 + Details
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