Hartford Mine
Past ProducerCopperUndergroundUSGS MRDS
Location
| State | Michigan |
| County | Ontonagon |
| Coordinates | 46.68472, -89.32230 |
Commodities
| Primary | Copper |
Mine Details
| Status | Past Producer |
| Type | Underground |
| First Production | 1864 |
| Data Source | USGS MRDS |
| Source ID | 10310136 |