| Lat / long: | 42.24751, -90.41821 |
| Primary: | Clay |
| Operation type: | Surface |
| Development status: | Past Producer |
| MAS | 190970019 |
| DEP | 10145671 |
| Reference | {Deposit:: MAQUOKETA SHALE}{Deposit:: IOWA GEOLOGICAL SURVEY, ANNUAL REPORTS 1940-1941, VOL. 38, P. 286} |
| Reporter | Igs / Dh |