| Lat / long: | 39.30157, -123.17029 |
| Tertiary: | Manganese, Silica |
| Other material: | Chert, Psilomelane, Pyrolusite |
| Discovery year: | 1915 |
| Operation type: | Surface-Underground |
| Development status: | Past Producer |
| First production started: | 1916 |
| MRDS | M010043 |
| MAS | 60450022 |
| DEP | 10261495 |
| Reference | {Deposit:: CDMG,BULL.152,1950,P.137-139}{Deposit:: CDMG,BULL.#76,P16,46-48,93,1918}{Deposit:: TRENGROVE,R.R.,USBM REPT.INV.5579,P.10-11}{Deposit:: USGS FILE OF WWI}{Deposit:: CJMG V.49, #4 PG.363 (1953)} |
| Reporter | Deino, Al |