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PROPERTY, PLANT AND EQUIPMENT (Tables)

9 Months Ended

Sep. 30, 2025

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 September 30, 2025
(thousands of dollars)		Alabama			Corporate			Total
Mineral rights and properties	​	$	8,972	​	$	—	​	$	8,972
Buildings	​	​	3,153	​	​	—	​	​	3,153
Other property, plant and equipment	​		4,360	​		11	​		4,371
Construction in progress	​	​	123,721	​	​	—	​	​	123,721
Total	​	$	140,206	​	$	11	​	$	140,217

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​	​	​	​	​	​	​	​	​	​
​	​	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

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- References

No definition available.

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- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 360
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

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