Old Mike Mine
Past ProducerSurface-UndergroundUSGS MRDS
Location
| State | South Dakota |
| County | Custer |
| Coordinates | 43.81826, -103.61696 |
Commodities
| Tertiary | Tantalum, Niobium (Columbium), Feldspar |
Mine Details
| Status | Past Producer |
| Type | Surface-Underground |
| Data Source | USGS MRDS |
| Source ID | 10250921 |