Grummett-knox Mine Group
Past ProducerSurface-UndergroundUSGS MRDS
Location
| State | California |
| County | Stanislaus |
| Coordinates | 37.52522, -121.34822 |
Commodities
| Tertiary | Manganese, Silica |
Mine Details
| Status | Past Producer |
| Type | Surface-Underground |
| First Production | 1918 |
| Discovery Year | 1918 |
| Data Source | USGS MRDS |
| Source ID | 10117875 |