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Mineral Property Expenditures (Tables)
 6 Months Ended
Jun. 30, 2017
Mineral Property Expenditures  
Schedule of Mineral Property Expenditures

Mineral property expenditures by geographical location for the three and six months ended June 30, 2017 and 2016 are as follows:

 

    For the Three Months Ended June 30,   For the Six Months Ended June 30,
    2017   2016   2017   2016
    (thousands of dollars)
Temrezli project, Turkey    $                    24    $                  180    $                  123    $                  421
     Total Turkey projects                          24                        180                        123                        421
                 
Kingsville Dome project, Texas                        155                        176                        418                        410
Rosita project, Texas                        172                          92                        284                        160
Vasquez project, Texas                        114                        102                        283                        260
Other projects, Texas                            1                          48                            2                          70
     Total Texas projects                        442                        418                        987                        900
                 
Cebolleta project, New Mexico                        538                        537                        538                        537
Juan Tafoya project, New Mexico                        310                            3                        316                          11
Other projects, New Mexico                            2                              -                               2                            -   
     Total New Mexico projects                        850                        540                        856                        548
                 
Columbus Basin project, Nevada                          72                             -                           188                            -   
Railroad Valley project, Nevada    155                             -                           158                            -   
Other projects, Nevada                            2                             -                               3                            -   
     Total Nevada projects                        229                             -                           349                            -   
                 
Sal Rica project, Utah                            7                             -                               6                            -   
     Total Utah projects                            7                             -                               6                            -   
                 
Total expense for the period    $              1,552                        1,138    $              2,321    $              1,869