Optimo No.3 Mine
Past ProducerUndergroundUSGS MRDS
Location
| State | Wisconsin |
| County | Iowa |
| Coordinates | 42.92811, -90.27791 |
Commodities
| Tertiary | Zinc |
Mine Details
| Status | Past Producer |
| Type | Underground |
| First Production | 1915 |
| Data Source | USGS MRDS |
| Source ID | 10253785 |