Net Book Value of Property, Plant and Equipment at December 31, 2025

(thousands of dollars)

  ​ ​ ​

Alabama

  ​ ​ ​

Corporate

  ​ ​ ​

Total

Mineral rights and properties

$

8,972

$

$

8,972

Buildings

3,122

3,122

Other property, plant and equipment

 

4,360

 

10

 

4,370

Construction in progress

126,729

126,729

Total

$

143,183

$

10

$

143,193

Net Book Value of Property, Plant and Equipment at December 31, 2024

(thousands of dollars)

  ​ ​ ​

Alabama

  ​ ​ ​

Corporate

  ​ ​ ​

Total

Mineral rights and properties

$

8,972

$

$

8,972

Buildings

3,243

3,243

Other property, plant and equipment

 

2,364

 

13

 

2,377

Construction in progress

123,276

123,276

Total

$

137,855

$

13

$

137,868

Historical Timeline

Fiscal YearFiled
2025Mar 19, 2026Showing above
2024Mar 20, 2025
2023Mar 19, 2024
2022Mar 6, 2023
2021Feb 11, 2022
2020Feb 16, 2021
2019Feb 14, 2020
2018Feb 15, 2019
2017Mar 1, 2018
2016Mar 2, 2017
2015Mar 18, 2016

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.