Delta, IA Mines
Mines in Delta, Iowa
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Delta Quarry | Martin Marietta Aggregates Co. | Stone, Crushed | ||
| Knowler Quarry | Martin Marietta Aggregates Co. | Private | Stone, Crushed | |
| Kreise Quarry | Stone, Crushed | |||
| Unknown | Stone, Crushed |