Keystone Mine
Past ProducerGoldUndergroundUSGS MRDS
Location
| State | South Dakota |
| County | Pennington |
| Coordinates | 43.89856, -103.37836 |
Commodities
| Primary | Gold |
| Tertiary | Silver |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10129376 |