Potomac Refining Co. Mine
Past ProducerManganeseUSGS MRDS
Location
| State | Maryland |
| County | Washington |
| Coordinates | 39.36947, -77.73859 |
Commodities
| Primary | Manganese |
Mine Details
| Status | Past Producer |
| Deposit Type | Residual |
| Data Source | USGS MRDS |
| Source ID | 10084500 |