Big Four
ProspectSilverUndergroundUSGS MRDS
Location
| State | California |
| County | San Bernardino |
| Coordinates | 35.35529, -117.61199 |
Commodities
| Primary | Silver |
Mine Details
| Status | Prospect |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10189950 |
| State | California |
| County | San Bernardino |
| Coordinates | 35.35529, -117.61199 |
| Primary | Silver |
| Status | Prospect |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10189950 |