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PROPERTY, PLANT AND EQUIPMENT (Tables)
3 Months Ended
Mar. 31, 2025
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, 2025

(thousands of dollars)

    

Alabama

    

Corporate

    

Total

Mineral rights and properties

$

8,972

$

$

8,972

Buildings

3,213

3,213

Other property, plant and equipment

 

4,105

 

12

 

4,117

Construction in progress

122,794

122,794

Total

$

139,084

$

12

$

139,096

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