Property, plant, and equipment, net, consisted of the following: 
December 31,
 20252024
Plant and mining equipment$1,050,261 $1,024,467 
Mine development241,154 199,419 
Land33,089 33,180 
Office equipment, software and other5,861 5,603 
Construction in progress65,602 39,462 
Total property, equipment and mine development costs$1,395,967 $1,302,131 
Less accumulated depreciation and amortization(774,101)(667,260)
Total property, plant, and equipment, net$621,866 $634,871 

Historical Timeline

Fiscal YearFiled
2025Feb 27, 2026Showing above
2024Feb 28, 2025
2023Feb 26, 2024
2022Feb 23, 2023
2021Mar 7, 2022
2020Mar 15, 2021
2019Mar 18, 2020
2018Apr 1, 2019

About PP&E Disclosures

The PP&E disclosure details a company's physical asset base — land, buildings, machinery, and equipment — along with the depreciation methods and useful life assumptions that determine how these costs flow through the income statement. Capitalization policy thresholds reveal management's judgment on the boundary between expense and asset, directly affecting both reported earnings and asset values.

Key signals: changes in estimated useful lives or depreciation methods can materially shift reported earnings without any operational change. Compare capital expenditures against depreciation expense — when capex consistently trails depreciation, the asset base may be aging and underinvested. Watch for large asset impairments or write-downs that signal overvalued carrying amounts. Asset retirement obligations reveal future environmental or decommissioning costs that are often underappreciated. Compare PP&E intensity (PP&E-to-revenue) against industry peers to assess capital efficiency and competitive positioning.