Olin, IA Mines
Mines in Olin, Iowa
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Fleming-Jensen Pit | Unknown | Sand and Gravel | ||
| Freeman Quarry | Dewees, C. B. | Stone, Crushed | ||
| Holtz Pit | Sand and Gravel | |||
| Knapp Sand Pit | B. L. Anderson Inc. | Sand and Gravel | ||
| Olin Quarry | Alpha Crushed Stone Inc. | Stone, Crushed |