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Property, Plant and Mine Development, net (Tables)
12 Months Ended
Dec. 31, 2022
Property, Plant and Mine Development, net  
Schedule of property, plant and mine development

As of

As of

December 31, 

December 31, 

2022

2021

(in thousands)

Asset retirement costs

$

7,449

$

1,065

Construction-in-progress

351

15,854

Furniture and office equipment

1,732

1,685

Land

9,033

9,230

Mineral interest

79,543

79,964

Light vehicles and other mobile equipment

2,327

2,224

Machinery and equipment

41,343

33,213

Mill facilities and infrastructure

35,917

24,973

Mine Development

105,263

92,138

Software and licenses

1,552

1,592

Subtotal (1)

284,510

261,938

Accumulated depreciation and amortization

(131,947)

(105,167)

Total

$

152,563

$

156,771

(1)Includes capital expenditures in accounts payable and accruals of $1.3 million and $1.7 million at December 31, 2022 and 2021, respectively.