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Property, Plant and Equipment (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
PROPERTY, PLANT AND EQUIPMENT |  |
Schedule of Property, Plant and Equipment |
|  | Net Book Value of Property, Plant and Equipment at March 31, 2019
(thousands of dollars) |  | Turkey |  | Texas |  | Alabama |  | New Mexico |  | Corporate |  | Total
Uranium plant |  | $ | — |  | $ | 3,143 |  | $ | — |  | $ | — |  | $ | — |  | $ | 3,143
Mineral rights and properties |  |  | — |  |  | — |  |  | 8,972 |  |  | 7,806 |  |  | — |  |  | 16,778
Other property, plant and equipment |  |  | 7 |  |  | 451 |  |  | — |  |  | — |  |  | 150 |  |  | 608
Total |  | $ | 7 |  | $ | 3,594 |  | $ | 8,972 |  | $ | 7,806 |  | $ | 150 |  | $ | 20,529
|  | Net Book Value of Property, Plant and Equipment at December 31, 2018
(thousands of dollars) |  | Turkey |  | Texas |  | Alabama |  | New Mexico |  | Corporate |  | Total
Uranium plant |  | $ | — |  | $ | 3,256 |  | $ | — |  | $ | — |  | $ | — |  | $ | 3,256
Mineral rights and properties |  |  | — |  |  | — |  |  | 8,973 |  |  | 7,806 |  |  | — |  |  | 16,779
Other property, plant and equipment |  |  | 8 |  |  | 348 |  |  | — |  |  | — |  |  | 162 |  |  | 518
Total |  | $ | 8 |  | $ | 3,604 |  | $ | 8,973 |  | $ | 7,806 |  | $ | 162 |  | $ | 20,553
|  | Net Book Value of Property, Plant and Equipment at December 31, 2018 |
(thousands of dollars) |  | Turkey |  |  | Texas |  |  | Alabama |  |  | New Mexico |  |  | Corporate |  |  | Total |
Uranium plant |  | $ | - |  |  | $ | 3,256 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 3,256 |
Mineral rights and properties |  |  | - |  |  |  | - |  |  |  | 8,973 |  |  |  | 7,806 |  |  |  | - |  |  |  | 16,779 |
Other property, plant and equipment |  |  | 8 |  |  |  | 348 |  |  |  | - |  |  |  | - |  |  |  | 162 |  |  |  | 518 |
Total |  | $ | 8 |  |  | $ | 3,604 |  |  | $ | 8,973 |  |  | $ | 7,806 |  |  | $ | 162 |  |  | $ | 20,553 |
|  | Net Book Value of Property, Plant and Equipment at December 31, 2017 |
(thousands of dollars) |  | Turkey |  |  | Texas |  |  | Alabama |  |  | New Mexico |  |  | Corporate |  |  | Total |
Uranium plant |  | $ | - |  |  | $ | 8,304 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 8,304 |
Mineral rights and properties |  |  | 17,968 |  |  |  | - |  |  |  | - |  |  |  | 7,806 |  |  |  | - |  |  |  | 25,774 |
Other property, plant and equipment |  |  | 11 |  |  |  | 1,109 |  |  |  | - |  |  |  | - |  |  |  | 211 |  |  |  | 1,331 |
Total |  | $ | 17,979 |  |  | $ | 9,413 |  |  | $ | - |  |  | $ | 7,806 |  |  | $ | 211 |  |  | $ | 35,409 |
(Note: Acreage amounts are unaudited.)
Summary of Impairment Expense by Project |  | The Company recorded the following impairment charges for 2018 and 2017 related to its uranium projects and processing facilities:
|  | For the years ended December 31, |
|  | 2018 |  |  | 2017 |
|  | (thousands of dollars) |
Kingsville Dome project |  | $ | 2,978 |  |  | $ | 140 |
Rosita project |  |  | 2,545 |  |  |  | - |
Vasquez project |  |  | 221 |  |  |  | - |
Temrezli project |  |  | 17,968 |  |  |  | - |
Cebolleta/Juan Tafoya project |  |  | - |  |  |  | 11,296 |
Total Impairment |  | $ | 23,712 |  |  | $ | 11,436 |
Schedule of Mineral Property Expenses | Mineral property expenditures by geographical location for the three months ended March 31, 2019 and 2018 are as follows:
|  | For the Three Months Ended Mar 31, |
--- | --- | --- | ---
|  | 2019 |  | 2018 |
|  | (thousands of dollars) |
Temrezli project, Turkey |  | $ | — |  | $ | 79 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Turkey projects |  |  | — |  |  | 79 |
Kingsville Dome project, Texas |  |  | 244 |  |  | 251 |
Rosita project, Texas |  |  | 117 |  |  | 197 |
Vasquez project, Texas |  |  | 186 |  |  | 235 |
Other projects, Texas |  |  | — |  |  | 6 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Texas projects |  |  | 547 |  |  | 689 |
Cebolleta project, New Mexico |  |  | — |  |  | — |
Juan Tafoya project, New Mexico |  |  | 6 |  |  | 6 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total New Mexico projects |  |  | 6 |  |  | 6 |
Columbus Basin project, Nevada |  |  | — |  |  | 2 |
Railroad Valley project, Nevada |  |  | — |  |  | 4 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Nevada projects |  |  | — |  |  | 6 |
Sal Rica project, Utah |  |  | 1 |  |  | 2 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Utah projects |  |  | 1 |  |  | 2 |
Coosa project, Alabama |  |  | 80 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total Alabama Projects |  |  | 80 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total expense for the period |  | $ | 634 |  |  | 782 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
| The Company spent the following amounts for each of its material properties:
|  | For the year ended December 31, |
|  | 2018 |  |  | 2017 |
|  | (thousands of dollars) |
Temrezli project, Turkey |  | $ | 117 |  |  | $ | 261 |
Total Turkey projects |  |  | 117 |  |  |  | 261 |
Kingsville Dome project, Texas |  |  | 800 |  |  |  | 810 |
Rosita project, Texas |  |  | 738 |  |  |  | 590 |
Vasquez project, Texas |  |  | 631 |  |  |  | 572 |
Other projects, Texas |  |  | 20 |  |  |  | 71 |
Total Texas projects |  |  | 2,189 |  |  |  | 2,043 |
Cebolleta project, New Mexico |  |  | 389 |  |  |  | 538 |
Juan Tafoya project, New Mexico |  |  | 223 |  |  |  | 542 |
Total New Mexico projects |  |  | 612 |  |  |  | 1,080 |
Columbus Basin project, Nevada |  |  | 249 |  |  |  | 866 |
Railroad Valley, Nevada |  |  | 90 |  |  |  | 241 |
Total Nevada projects |  |  | 339 |  |  |  | 1,107 |
Sal Rica project, Utah |  |  | 141 |  |  |  | 93 |
Total Utah projects |  |  | 141 |  |  |  | 93 |
Coosa project, Alabama |  |  | 140 |  |  |  | - |
Total Alabama projects |  |  | 140 |  |  |  | - |
Total expense for the period |  | $ | 3,538 |  |  | $ | 4,584 |

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