| Lat / long: | 39.37443, -77.7405 |
| Tertiary: | Manganese |
| Discovery year: | 1908 |
| Operation type: | Underground |
| Development status: | Past Producer |
| First production started: | 1908 |
| MAS | 240430001 |
| DEP | 10194353 |
| Reference | {Deposit:: U.S.G.S. BULLETIN 640-C, P. 69}{Deposit:: EXAMINATIONS REPORT 91.303} |
| Reporter | Eastern Field Operations Center (EFOC) |