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MINERAL PROPERTY EXPENDITURES (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
MINERAL PROPERTY EXPENDITURES    
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