Dubuque County, IA Phosphorus Mines
Phosphorus Mines in Dubuque County, IA
| Mine | Owner | Land Status | Work Type | Minerals |
|---|---|---|---|---|
| Composite Section | Phosphorus | |||
| Creek Bank | Phosphorus | |||
| Creek Bank | Phosphorus | |||
| Creek Bank | Phosphorus | |||
| Excavation | Phosphorus | |||
| Occurrence | Phosphorus | |||
| Occurrence | Phosphorus | |||
| Roadcut | Phosphorus | |||
| Roadcut | Phosphorus | |||
| Roadcut | Phosphorus | |||
| Stream Bank | Phosphorus | |||
| Twin Springs Quarry | Phosphorus |