| Lat / long: | 37.48632, -121.34852 |
| Tertiary: | Manganese |
| Discovery year: | 1918 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MAS | 60990005 |
| DEP | 10287359 |
| Reference | DOM BULL 125 P 189; BULL 76 P 87, 96; BULL 152 P 290 |
| Reporter | Western Field Operations Center (WFOC) |