| Lat / long: | 43.86576, -103.40726 | 
| Tertiary: | Niobium (Columbium), Tantalum | 
| Operation type: | Surface-Underground | 
| Development status: | Past Producer | 
| MAS | 461030078 | 
| DEP | 10202375 | 
| Reference | USBM STAFF,1955,REG V,IC 7707 P 69 | 
| Reporter | South Dakota School of Mines |