| Lat / long: | 38.20754, -75.47213 |
| Primary: | Iron |
| Operation type: | Surface |
| Development status: | Past Producer |
| MAS | 240470002 |
| DEP | 10218173 |
| Reference | {Deposit:: SINGEWALD, JR, J T, 1911, MD.G.S. VOL 9, PART 3, PP. 230-231}{Deposit:: FOR LOCATION SEE MAP ATTACHED TO FEDERALSBURG MINE,CAROLINE}{Deposit:: LISTED AS NO.88.}{Deposit:: PEARRE, NANCY C, 1961, USGS MIN INV RES MAP MR-12.} |
| Reporter | Eastern Field Operations Center (EFOC) |