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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2023
COMMITMENTS AND CONTINGENCIES |
Schedule of minimum commitments and related payments due | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Payments due by period
​ | ​ | 2024 | ​ | 2025 | ​ | 2026 | ​ | 2027 | ​ | Thereafter | ​ | ​ | Total
Mining and surface rights | ​ | $ | 2,082 | ​ | $ | 1,002 | ​ | $ | 673 | ​ | $ | 660 | ​ | $ | 35 | ​ | $ | 4,452
Reclamation costs(1) | ​ | ​ | 9,608 | ​ | ​ | 3,152 | ​ | ​ | 4,220 | ​ | ​ | 8,473 | ​ | ​ | 27,002 | ​ | ​ | 52,455
Long-term debt (Note 11) | ​ | ​ | — | ​ | ​ | 12,000 | ​ | ​ | 28,000 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 40,000
Lease obligations (Note 10) | ​ | ​ | 1,073 | ​ | ​ | 330 | ​ | ​ | 207 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,610
Total | ​ | $ | 12,763 | ​ | $ | 16,484 | ​ | $ | 33,100 | ​ | $ | 9,133 | ​ | $ | 27,037 | ​ | $ | 98,517
(1) | Amounts presented represent the undiscounted uninflated future payments.

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (S-X 210.12-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 + Details
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