Riddle Mine
Past ProducerIronUSGS MRDS
Location
| State | New Jersey |
| County | Warren |
| Coordinates | 40.81528, -75.01849 |
Commodities
| Primary | Iron |
Mine Details
| Status | Past Producer |
| Deposit Type | Unknown |
| First Production | 1872 |
| Last Production | 1891 |
| Data Source | USGS MRDS |
| Source ID | 10082285 |