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PROPERTY, PLANT AND EQUIPMENT (Tables) | 12 Months Ended
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Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT. |
Net Book Value of Property, Plant and Equipment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Book Value of Property Plant and Equipment at December 31, 2021
(thousands of dollars) |  | Alabama |  | Corporate |  | Total
Mineral rights and properties | ​ | $ | 8,972 | ​ | $ | — | ​ | $ | 8,972
Other property, plant and equipment | ​ |  | 4,462 | ​ |  | 28 | ​ |  | 4,490
Construction in progress | ​ | ​ | 1,017 | ​ | ​ | — | ​ | ​ | 1,017
Total | ​ | $ | 14,451 | ​ | $ | 28 | ​ | $ | 14,479
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Net Book Value of Property Plant and Equipment at December 31, 2020
(thousands of dollars) |  | Alabama |  | Corporate |  | Total
Mineral rights and properties | ​ | $ | 8,972 | ​ | $ | — | ​ | $ | 8,972
Other property, plant and equipment | ​ |  | — | ​ |  | 13 | ​ |  | 13
Construction in progress | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 8,972 | ​ | $ | 13 | ​ | $ | 8,985
Impairment Charges | ​
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | For the year ended December 31,
​ |  |  | 2020
​ | ​ | ​ | (thousands of dollars)
Kingsville Dome project | ​ | ​ | $ | 101
Rosita project | ​ | ​ |  | 1,161
Cebolleta/Juan Tafoya project | ​ | ​ |  | 3,938
Total Impairment | ​ | ​ | $ | 5,200

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- Definition Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.CC) -URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742 + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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