Winthrop Mine
Past ProducerCopperUndergroundUSGS MRDS
Location
| State | Michigan |
| County | Keweenaw |
| Coordinates | 47.40750, -88.20643 |
Commodities
| Primary | Copper |
Mine Details
| Status | Past Producer |
| Type | Underground |
| Deposit Type | Fissure Copper Veins |
| First Production | 1863 |
| Last Production | 1865 |
| Data Source | USGS MRDS |
| Source ID | 10310098 |