| Lat / long: | 38.4166, -120.62771 |
| Tertiary: | Manganese |
| Discovery year: | 1917 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | M005241 |
| MAS | 60050010 |
| DEP | 10211729 |
| Reference | CAL JRN MNG & GEOL V 50 NO 1 1954 P 202 269 PL 1 V39 JUL 194 |
| Reporter | Western Field Operations Center (WFOC) |