v3.26.1
PROPERTY, PLANT AND EQUIPMENT (Tables)
6 Months Ended
Jun. 30, 2026
PROPERTY, PLANT AND EQUIPMENT  
Schedule of net book value of property, plant and equipment

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Net Book Value of Property, Plant and Equipment at June 30, 2026

(thousands of dollars)

  ​ ​ ​

Alabama

  ​ ​ ​

Corporate

  ​ ​ ​

Total

Mineral rights and properties

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$

8,972

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$

—

​

$

8,972

Buildings

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​

3,063

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—

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​

3,063

Other property, plant and equipment

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4,041

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8

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4,049

Construction in progress

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​

128,462

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—

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​

128,462

Total

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$

144,538

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$

8

​

$

144,546

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

(thousands of dollars)

  ​ ​ ​

Alabama

  ​ ​ ​

Corporate

  ​ ​ ​

Total

Mineral rights and properties

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$

8,972

​

$

—

​

$

8,972

Buildings

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​

3,122

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—

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3,122

Other property, plant and equipment

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4,360

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10

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4,370

Construction in progress

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126,729

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—

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126,729

Total

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$

143,183

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$

10

​

$

143,193