Twain Harte, CA Copper Mines
Copper Mines in Twain Harte, California
| Mine |
Owner |
Land Status |
Work Type |
Minerals |
| Hazel Dell |
|
Private |
|
Copper |
| Henning |
|
National Forest |
|
Copper |
| Mildred Lloyd |
|
Unknown |
|
Copper |
| Star |
|
National Forest |
|
Copper |
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