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Inventories and Ore on Leach Pads
 9 Months Ended
Sep. 30, 2022
Inventory Disclosure [Abstract]  
Inventories and Ore on Leach Pads Inventories and Ore on Leach Pads
The following table provides the components of Inventories and the estimated recoverable gold ounces therein (dollars in thousands):
September 30, 2022December 31, 2021
AmountGold OuncesAmountGold Ounces
Inventories:
Materials and supplies$3,800 — $4,376 — 
Merrill-Crowe process plant— — 11 6 
Carbon-in-column (on-site)7,388 6,142 3,493 2,044 
Finished goods (doré and off-site carbon)907 565 3,189 1,799 
Total$12,095 6,707 $11,069 3,849 
As of September 30, 2022 and December 31, 2021, in-process inventories and finished goods inventories included $0.8 million and $0.4 million, respectively of capitalized depreciation and amortization costs. As of September 30, 2022, there were no indicators of impairment that would necessitate a write-down of the Company’s Inventories.
The following table summarizes Ore on leach pads and the estimated recoverable gold ounces therein (dollars in thousands):
September 30, 2022December 31, 2021
AmountGold OuncesAmountGold Ounces
Ore on leach pads$— — $10,106 7,130 
As of September 30, 2022, the Company recovered all previously estimated gold ounces from the leach pad inventory. The Company continues to recover ounces in excess of previous estimates during the drain down period. As of December 31, 2021, Ore on leach pads included $0.6 million of capitalized depreciation and amortization costs.