| Lat / long: | 37.46462, -121.50662 |
| Tertiary: | Manganese |
| Discovery year: | 1918 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | W025109 |
| MAS | 60850033 |
| DEP | 10140448 |
| Reference | CALIF. JOUR. MINES & GEO. V. 50,NO2, APR. 1954, P.415. D.O.M |
| Reporter | Western Field Operations Center (WFOC) |