Portland Mine
Past ProducerIronSurfaceUSGS MRDS
Location
| State | Michigan |
| County | Baraga |
| Coordinates | 46.53472, -88.15226 |
Commodities
| Primary | Iron |
Mine Details
| Status | Past Producer |
| Type | Surface |
| Deposit Type | Secondary Enrichment |
| First Production | 1909 |
| Last Production | 1915 |
| Data Source | USGS MRDS |
| Source ID | 10079316 |