| Lat / long: | 39.48922, -76.87717 |
| Tertiary: | Cobalt, Copper, Iron, Nickel |
| Other material: | Actinolite, Bornite, Carrollite, Chalcocite, Chalcopyrite, Chlorite, Epidote, Gahnite, Magnetite, Pyrite, Quartz, Serpentine, Siegenite, Steatite, Talc |
| Operation type: | Underground |
| Development status: | Past Producer |
| First production started: | 1849 |
| MRDS | W000713 |
| MAS | 240130005 |
| DEP | 10145484 |
| Reference | {Deposit:: CONFIDENTIAL UNPUBLISHED WAR MINERAL REPT FILES, PATAPSCO MI}{Deposit:: CARROLL CO., MD., MISC REPTS INCLUDING REGIONAL FILE NO 290}{Deposit:: ESPENSHADE, GILBERT K., REPT. ON MD COPPER MINES AND PROSPEC}{Deposit:: USGS UNPUBLISHED REPT, AUG 13, 1942 P 5}{Deposit:: HEYL, ALLEN V., AND PEARRE, NANCY C., MD GEOL. SURV. BULL 28} |
| Reporter | Sapakoff |