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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
The components of Inventories were as follows (in thousands):
December 31,
20212020
Materials and supplies$79,372 
$
85,766 
Stockpiled ore 27,589 25,582 
Leach pad inventory243,627 282,793 
Work-in-process 4,951 4,368 
Finished goods33,877 38,525 
Total current inventories
$389,416 
$
437,034 
  
Stockpiled ore 220,324 133,500 
Materials and supplies1,293 1,700 
Total non-current inventories 
$221,617 
$
135,200 
Schedule of Inventory, Noncurrent
The components of Inventories were as follows (in thousands):
December 31,
20212020
Materials and supplies$79,372 
$
85,766 
Stockpiled ore 27,589 25,582 
Leach pad inventory243,627 282,793 
Work-in-process 4,951 4,368 
Finished goods33,877 38,525 
Total current inventories
$389,416 
$
437,034 
  
Stockpiled ore 220,324 133,500 
Materials and supplies1,293 1,700 
Total non-current inventories 
$221,617 
$
135,200