| Lat / long: | 42.04061, -90.86953 |
| Primary: | Flagstone |
| Operation type: | Surface |
| Development status: | Past Producer |
| MAS | 190970050 |
| DEP | 10169861 |
| Reference | {Deposit:: PENNSYLVANIAN SANDSTONE OUTLIER IN SECS. 31, 32, 33}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORT 1905, VOL. 16, P. 644} |
| Reporter | Igs / Dh |