| Lat / long: | 39.43817, -122.56638 |
| Tertiary: | Manganese |
| Discovery year: | 1918 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | M008635 |
| MAS | 60210010 |
| DEP | 10115051 |
| Reference | DOM BULL 152, P 62-63 |
| Reporter | Western Field Operations Center (WFOC) |