Mason City, IA Clays Mines
Clays Mines in Mason City, Iowa
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Faught Pit | Northwestern States Portland Cement Co. | Unknown | Clays | |
| Kirk Pit | Northwestern States Portland Cement Co. | Unknown | Clays | |
| Lehigh Quarry | Private | Clays | ||
| Mason City Brick and Tile | Unknown | Clays | ||
| Northwestern States Qry Cemt Plnt | Northwestern State | Private | Clays | |
| Oswald Clay Pit | Northwestern States Portland Cement Co. | Unknown | Clays | |
| Unknown | Unknown | Clays | ||
| Willowbrook Shale Pit | Northwestern States Portland Cement Co. | Unknown | Clays |