Dewey Tunnels
Past ProducerManganeseUndergroundUSGS MRDS
Location
| State | Montana |
| County | Jefferson |
| Coordinates | 46.37160, -112.16088 |
Commodities
| Primary | Manganese |
| Tertiary | Silver, Lead |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10294448 |