| Lat / long: | 39.72942, -76.10574 |
| Tertiary: | Aluminum, Calcium, Chromium, Iron, Magnesite, Silica, Titanium |
| Other material: | Antigorite, Brucite, Calcite, Clinochlore, Dolomite, Magnesite, Magnetite, Olivine, Penninite, Uvarovite |
| Operation type: | Underground |
| Development status: | Past Producer |
| First production started: | 1828 |
| MAS | 420710009 |
| DEP | 10201993 |
| Reference | {Deposit:: MCINTOSH F MOSIER M USBM R I 4383 PGS 2 3 1948}{Deposit:: LAPHAM D PA GEO SUR PROG REPT 153 PG 1 1958}{Deposit:: PEARRE N ALLEN H PA GEOL SUR I C 14 PG 3 1959}{Deposit:: PEARRE N HEYL A USGS B 1082K PG 719 737 & 775 779 1960}{Deposit:: KNOPF E USGS B 725B P 97 1921} |
| Reporter | Harrison |