| Lat / long: | 40.41955, -123.17551 |
| Tertiary: | Silica, Calcium, Manganese |
| Discovery year: | 1937 |
| Operation type: | Surface |
| Development status: | Past Producer |
| First production started: | 1942 |
| MRDS | M020339 |
| MAS | 61050051 |
| DEP | 10214163 |
| Reference | {Deposit:: TRASK-GEO DESCRIPT MN DEPS OF CAL-CAL DIV.OF.MINES BUL.152-A}{Deposit:: *RIEN-MINES AND MIN RES TRINITYCO-CAL.DIV.MINES GEO.CO.RPT}{Deposit:: TRENGROVE,R.R.,USBM. R.I.5579} |
| Reporter | Deino, Al |