Riddle Mine
Past ProducerUndergroundUSGS MRDS
Location
| State | New Jersey |
| County | Warren |
| Coordinates | 40.81360, -75.02100 |
Commodities
| Tertiary | Iron |
Mine Details
| Status | Past Producer |
| Type | Underground |
| First Production | 1871 |
| Data Source | USGS MRDS |
| Source ID | 10150550 |