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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET (Tables) | 3 Months Ended
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Mar. 31, 2022
Property, Plant and Equipment [Abstract] |
Mineral Properties, Plant and Equipment | The components of Mineral properties, plant and equipment, net are as follows (in thousands):
| March 31, 2022 |  | December 31, 2021
Plant and equipment (1) | $ | 1,745,105 |  |  | $ | 1,762,833 |
Construction in process |  | 51,832 |  |  |  | 36,841 |
Mineral properties subject to depletion |  | 1,393,722 |  |  |  | 1,331,615 |
Mineral properties not yet subject to depletion |  | 658,637 |  |  |  | 141,629 |
Exploration and evaluation assets |  | 318,762 |  |  |  | 927,176 |
Total mineral properties, plant, and equipment | $ | 4,168,058 |  |  | $ | 4,200,094 |
Accumulated depreciation, plant and equipment |  | (553,257) |  |  |  | (529,635) |
Accumulated depreciation, mineral properties |  | (451,070) |  |  |  | (420,695) |
Mineral properties, plant, and equipment, net | $ | 3,163,731 |  |  | $ | 3,249,764 |
(1) As of March 31, 2022 and December 31, 2021, plant and equipment includes finance lease right-of-use assets with a carrying amount of $105.7 million and $114.9 million, respectively.

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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