Washington County, MD Manganese Mines
Manganese Mines in Washington County, MD
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Dargan Mine | Shinhan, O. J. | Manganese | ||
| Potomac Refining Co. Mine | Manganese | |||
| Potomac Refining Company Deposit | Private | Manganese |
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Dargan Mine | Shinhan, O. J. | Manganese | ||
| Potomac Refining Co. Mine | Manganese | |||
| Potomac Refining Company Deposit | Private | Manganese |