| Lat / long: | 42.33171, -87.83692 |
| Primary: | Tantalum |
| Tertiary: | Niobium (Columbium), Tungsten |
| Operation type: | Processing Plant |
| Development status: | Producer |
| MAS | 170979002 |
| DEP | 10193257 |
| Reference | {Deposit:: ILL MFG DIR 1980 P1185; PLANT IS ROLLING & DRAWING MILL}{Deposit:: LOC IN NORTH CHICAGO, ILL.} |
| Reporter | Eastern Field Operations Center (EFOC) |