| Lat / long: | 38.85048, -123.08798 |
| Tertiary: | Manganese |
| Discovery year: | 1918 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | M009983 |
| MAS | 60450020 |
| DEP | 10285676 |
| Reference | CALIF JOUR MINES AND GEOL V49 NO4 OCT 1953 P390 |
| Reporter | Western Field Operations Center (WFOC) |