v3.26.1
PROPERTY, PLANT AND EQUIPMENT (Tables)
3 Months Ended
Mar. 31, 2026
PROPERTY, PLANT AND EQUIPMENT  
Schedule of net book value of property, plant and equipment

Net Book Value of Property, Plant and Equipment at March 31, 2026

(thousands of dollars)

  ​ ​ ​

Alabama

  ​ ​ ​

Corporate

  ​ ​ ​

Total

Mineral rights and properties

$

8,972

$

$

8,972

Buildings

3,093

3,093

Other property, plant and equipment

 

4,202

 

9

 

4,211

Construction in progress

128,151

128,151

Total

$

144,418

$

9

$

144,427

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