| Mineral Property |
Mineral Properties |
|
Lost Creek
Property
|
|
|
Pathfinder
Mines
|
|
|
Other U.S.
Properties
|
|
|
Total |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2018 |
|
|
12,644 |
|
|
|
19,964 |
|
|
|
13,197 |
|
|
|
45,805 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Acquisition costs |
|
|
- |
|
|
|
- |
|
|
|
8 |
|
|
|
8 |
|
Change in estimated reclamation costs |
|
|
125 |
|
|
|
(114 |
) |
|
|
- |
|
|
|
11 |
|
Property write-offs |
|
|
16 |
|
|
|
- |
|
|
|
(27 |
) |
|
|
(11 |
) |
Depletion and amortization |
|
|
(2,601 |
) |
|
|
- |
|
|
|
- |
|
|
|
(2,601 |
) |
December 31, 2019 |
|
|
10,184 |
|
|
|
19,850 |
|
|
|
13,178 |
|
|
|
43,212 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Change in estimated reclamation costs |
|
|
(1,463 |
) |
|
|
(120 |
) |
|
|
- |
|
|
|
(1,583 |
) |
Depletion and amortization |
|
|
(2,445 |
) |
|
|
- |
|
|
|
- |
|
|
|
(2,445 |
) |
December 31, 2020 |
|
|
6,276 |
|
|
|
19,730 |
|
|
|
13,178 |
|
|
|
39,184 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reclassify assets held for sale (note 4) |
|
|
- |
|
|
|
(1,536 |
) |
|
|
- |
|
|
|
(1,536 |
) |
Change in estimated reclamation costs |
|
|
296 |
|
|
|
(832 |
) |
|
|
- |
|
|
|
(536 |
) |
Depletion and amortization |
|
|
(2,045 |
) |
|
|
- |
|
|
|
- |
|
|
|
(2,045 |
) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
December 31, 2021 |
|
|
4,527 |
|
|
|
17,362 |
|
|
|
13,178 |
|
|
|
35,067 |
|
|