| Lat / long: | 41.53531, -93.0927 |
| Primary: | Flagstone |
| Operation type: | Surface |
| Development status: | Past Producer |
| MAS | 190990084 |
| DEP | 10145706 |
| Reference | {Deposit:: QUARRIED FROM RAILROAD CUT}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORT 1906, VOL. 17, P. 471.} |
| Reporter | Igs / Dh |