Riddle Mine
ProducerNickel, Iron, CobaltUSGS MRDS
Location
| State | Oregon |
| County | Douglas |
| Coordinates | 42.96371, -123.44338 |
Commodities
| Primary | Nickel, Iron, Cobalt |
Mine Details
| Status | Producer |
| First Production | 1954 |
| Last Production | 1983 |
| Discovery Year | 1864 |
| Data Source | USGS MRDS |
| Source ID | 10024510 |