Helmke
UnknownChromiumUndergroundUSGS MRDS
Location
| State | California |
| County | Butte |
| Coordinates | 39.80547, -121.62496 |
Commodities
| Primary | Chromium |
Mine Details
| Status | Unknown |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10138215 |
| State | California |
| County | Butte |
| Coordinates | 39.80547, -121.62496 |
| Primary | Chromium |
| Status | Unknown |
| Type | Underground |
| Data Source | USGS MRDS |
| Source ID | 10138215 |