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Inventories and Ore on Leach Pads (Tables)
 3 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Schedule of inventory The following table provides the components of Inventories and the estimated recoverable gold ounces therein (dollars in thousands):
March 31, 2022December 31, 2021
AmountGold OuncesAmountGold Ounces
Inventories:
Materials and supplies$4,158 — $4,376 — 
Merrill-Crowe process plant— — 11 6 
Carbon-in-column6,028 3,174 3,493 2,044 
Finished goods (doré and off-site carbon)948 695 3,189 1,799 
Total$11,134 3,869 $11,069 3,849 
Schedule of inventory, Ore on leach pads
The following table summarizes Ore on leach pads and the estimated recoverable gold ounces therein (dollars in thousands):
March 31, 2022December 31, 2021
AmountGold OuncesAmountGold Ounces
Ore on leach pads$3,680 2,693 $10,106 7,130 
Total$3,680 2,693 $10,106 7,130