Portland Brownstone Quarries
Past ProducerFlagstoneSurfaceUSGS MRDS
Location
| State | Connecticut |
| County | Middlesex |
| Coordinates | 41.57559, -72.64092 |
Commodities
| Primary | Flagstone |
Mine Details
| Status | Past Producer |
| Type | Surface |
| Data Source | USGS MRDS |
| Source ID | 10264675 |