| Lat / long: | 38.04161, -120.4352 |
| Primary: | Graphite |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| MRDS | W025984 |
| MAS | 61090237 |
| DEP | 10287656 |
| Reference | {Deposit:: CALIF JOUR MINES AND GEOL V45 NO1 JAN 1949 P75 CLAIM LOCATED}{Deposit:: PATENTED BLACK HAWK PLUMBAGO PLACER MINE} |
| Reporter | Western Field Operations Center (WFOC) |