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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET | 12 Months Ended
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Dec. 31, 2021
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 were as follows (in thousands):
|  | December 31,
|  | 2021 |  | 2020
Plant and equipment (1) |  | $ | 1,762,833 |  |  | $ | 1,640,705 |
Construction in process |  |  | 36,841 |  |  |  | 40,290 |
Mineral properties subject to depletion |  |  | 1,331,615 |  |  |  | 1,282,208 |
Mineral properties not yet subject to depletion |  |  | 141,629 |  |  |  | 222,938 |
Exploration and evaluation assets |  |  | 927,176 |  |  |  | 930,606 |
Total mineral properties, plant, and equipment |  |  | 4,200,094 |  |  |  | 4,116,747 |
Accumulated depreciation, plant and equipment |  |  | (529,635) |  |  |  | (423,326) |
Accumulated depreciation, mineral properties |  |  | (420,695) |  |  |  | (223,682) |
Mineral properties, plant, and equipment, net |  | $ | 3,249,764 |  |  | $ | 3,469,739 |
(1)As of December 31, 2021 and 2020, plant and equipment includes finance lease right-of-use assets with a carrying amount of $114.9 million and $112.8 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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