| Lat / long: | 37.42571, -121.78273 |
| Tertiary: | Manganese |
| Discovery year: | 1917 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | W025124 |
| MAS | 60850024 |
| DEP | 10164984 |
| Reference | CALIF. JOUR. MINES &GEO.V.50,NO.2, APR. 1954,P.414, D.O.M. |
| Reporter | Western Field Operations Center (WFOC) |