Granite Mines in New Hampshire
9Total Sites
4Active
Granite Mining in New Hampshire
New Hampshire has 9 granite-related mine and mineral deposit locations recorded in federal databases. Of these, 4 are currently active operations. Data comes from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records.
By County
| County | Sites |
|---|---|
| Hillsborough County | 4 |
| Merrimack County | 2 |
| Belknap County | 1 |
| Coos County | 1 |
| Grafton County | 1 |
Granite Mines
| Mine | County | Type | Status |
|---|---|---|---|
| Concord Gray Quarry | Merrimack | Surface | Producer |
| Gumb Quarry | Coos | Surface | Producer |
| Kitledge Quarry | Hillsborough | Surface | Producer |
| Mason Quarry | Hillsborough | Surface | Producer |
| Barretto Granite Corp | Hillsborough | Past Producer | |
| John Swenson Granite Co | Merrimack | Past Producer | |
| Maine New Hampshire Granite Corp | Hillsborough | Past Producer | |
| Milliken Hill Quarry | Belknap | Surface | Past Producer |
| Prescott Mica Prospect | Grafton | Surface | Prospect |
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