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Property, Plant, and Equipment, Net
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment, Net Property, Plant, and Equipment, Net
The following table provides the components of property, plant, and equipment, net (in thousands):
Depreciation Life
or Method		Year Ended December 31,
20242023
Production leach padsUnits-of-production$11,190 $11,190 
Test leach pads18 months6,241 6,241 
Process equipment
5 - 15 years
18,030 17,556 
Buildings and leasehold improvements
10 years
9,446 9,419 
Mine equipment
5 - 7 years
5,050 4,732 
Vehicles
3 - 5 years
1,854 1,700 
Furniture and office equipment
7 years
713 713 
Mineral propertiesUnits-of-production50 50 
Construction in progress and other35,287 35,504 
87,861 87,105 
Less, accumulated depreciation and amortization(36,273)(34,014)
Total$51,588 $53,091 
Depreciation expense related to Property, plant, and equipment, net was $2.2 million and $2.8 million for the years ended December 31, 2024 and December 31, 2023, respectively.
Construction in progress and other
The primary project included in construction in progress at December 31, 2024 and December 31, 2023, was construction of a new larger leach pad. Construction on this project commenced in 2020 and continued until February 2021 when it was temporarily suspended. As of December 31, 2024, the value of the construction costs for the new, larger leach pad were $32.6 million. This was a $0.4 million decrease from December 31, 2023 due to an asset disposal.