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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET
 12 Months Ended
Dec. 31, 2023
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,
20232022
Plant and equipment (1)
$1,889,634 $1,793,914 
Construction in process
 86,304  58,704 
Mineral properties subject to depletion

2,085,678 1,452,850 
Mineral properties not yet subject to depletion
 878,712  848,281 
Exploration and evaluation assets

253,842 515,070 
Total mineral properties, plant, and equipment 5,194,170  4,668,819 
Accumulated depreciation, plant and equipment

(714,579)(621,323)
Accumulated depreciation, mineral properties(606,705)(498,050)
Mineral properties, plant, and equipment, net$3,872,886 $3,549,446 
(1)As of December 31, 2023 and 2022, plant and equipment includes finance lease right-of-use assets with a carrying amount of $84.7 million and $101.7, respectively.
During the year ended December 31, 2023, the Company concluded that mineral properties, plant and equipment was impaired and recorded a non-cash impairment. See Note 7 for further information relating to impairment of mineral properties, plant and equipment. No impairment was recognized for the year ended December 31, 2022.