Abandoned Mines in New Hampshire

383Abandoned & Historical

Abandoned Mining in New Hampshire

Federal databases record 383 abandoned, sealed, and historically closed mine locations in New Hampshire. These include mines officially abandoned under MSHA oversight and past producers documented in the USGS Mineral Resources Data System. Abandoned mines are a legacy of centuries of mineral extraction and can pose ongoing environmental and safety concerns for nearby communities.

Safety Warning: Abandoned mines are extremely dangerous. Hazards include cave-ins, toxic gases, flooded shafts, unstable ground, and hidden vertical drops. Never enter an abandoned mine. Many are on private property. If you discover an unsecured abandoned mine, report it to your state mining agency.

Top Counties

County	Abandoned/Historical
Grafton County	105
Carroll County	47
Cheshire County	46
Rockingham County	43
Merrimack County	37
Hillsborough County	24
Coos County	23
Sullivan County	22
Belknap County	20
Strafford County	16

Abandoned Mine Sites

Mine	County	Commodity	Status	Source
49 Pit	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Adam Rock Mine	Cheshire	Graphite	Past Producer	MRDS
Advanced Aggregate Materials Corp	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Alger Mine	Grafton	Stone, Crushed/Broken	Past Producer	MRDS
Alger No. 1 Mine	Grafton	Mica	Past Producer	MRDS
Allen Feldspar Quarry	Cheshire	Feldspar	Past Producer	MRDS
Allenstown Materials Llc	Merrimack	Construction Sand and Gravel	Abandoned	MSHA
Alvin J Coleman and Son Inc	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Ambrose Bros Inc	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Amos Locke Pit	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Arrowhead Archeology North, Llc	Merrimack	Construction Sand and Gravel	Abandoned	MSHA
Ashland Pit	Grafton	Sand and Gravel, Construction	Past Producer	MRDS
Ashland Sand and Gravel	Grafton	Sand and Gravel, Construction	Past Producer	MRDS
Atwood Au Mine	Grafton	Gold	Past Producer	MRDS
Atwood Mica Mine	Grafton	Mica	Past Producer	MRDS
Bald Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Barretto Granite Corp	Hillsborough	Granite	Past Producer	MRDS
Beryl Mountain Pegmatites	Sullivan	Feldspar	Past Producer	MRDS
Beryl Mt. Mine	Sullivan	Beryllium	Past Producer	MRDS
Big Green	Rockingham	Common Shale	Abandoned	MSHA
Big Mine	Cheshire	Mica, Feldspar	Past Producer	MRDS
Blaisdell Sand & Gravel	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Blake Mine	Cheshire	Mica	Past Producer	MRDS
Blake Mine	Rockingham	Feldspar	Past Producer	MRDS
Blister Mine	Cheshire	Feldspar	Past Producer	MRDS
Boardman Mine	Grafton	Beryllium, Mica, Feldspar	Past Producer	MRDS
Bodge Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Bog Rd Pit	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Boscawen Sand & Gravel North	Merrimack	Construction Sand and Gravel	Abandoned	MSHA
Boston Lead Mine	Merrimack	Graphite	Past Producer	MRDS
Bow Pit	Merrimack	Sand and Gravel, Construction	Past Producer	MRDS
Braun Sand Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Brier Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Brookline Pit 1	Hillsborough	Construction Sand and Gravel	Abandoned	MSHA
Brown Company	Coos	Sand and Gravel, Construction	Past Producer	MRDS
Brown Lenox Portable Jaw	Merrimack	Crushed, Broken Stone NEC	Abandoned	MSHA
Brown Lenox S/n 9106kk	Coos	Construction Sand and Gravel	Abandoned	MSHA
Buswell's Mine	Merrimack	Lead	Past Producer	MRDS
Cec Roadrunner 400 Series Portable Jaw	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Conway Sand & Gravel C622	Carroll	Construction Sand and Gravel	Abandoned	MSHA
Caleponia Inc	Grafton	Sand and Gravel, Construction	Past Producer	MRDS
Callahan Stone Co.	Sullivan	Construction Sand and Gravel	Abandoned	MSHA
Campton Sand & Gravel C616	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Campton Sand and Gravel Inc	Grafton	Sand and Gravel, Construction	Past Producer	MRDS
Caron Mine	Cheshire	Feldspar	Past Producer	MRDS
Carpenter Mica Mine	Grafton	Mica	Past Producer	MRDS
Chandler Mine	Rockingham	Feldspar	Past Producer	MRDS
Charles Davis Mica Mine	Grafton	Mica	Past Producer	MRDS
Chester Bearce Excavating Cont.	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
Chickering Mine	Cheshire	Feldspar	Past Producer	MRDS
Clark Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Cleaveland Mine?	Grafton	Copper	Past Producer	MRDS
Clermont Trucking Inc	Coos	Construction Sand and Gravel	Abandoned	MSHA
Coakley Pit	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
Cold River Materials, Westmoreland	Cheshire	Construction Sand and Gravel	Abandoned	MSHA
Colony Feldspar Mine	Cheshire	Feldspar	Past Producer	MRDS
Columbia Quarry	Coos	Dimension Stone NEC	Abandoned	MSHA
Columbia Sand & Gravel-Wash Plant	Coos	Construction Sand and Gravel	Abandoned	MSHA
Commercial Street Plant	Merrimack	Construction Sand and Gravel	Abandoned	MSHA
Concord Brick Co. Yard	Merrimack	Clay	Past Producer	MRDS
Continental Paving-Portable	Rockingham	Crushed, Broken Stone NEC	Abandoned	MSHA
Conway Sand and Gravel Inc	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Copper Mine	Grafton	Copper	Past Producer	MRDS
Copper Mine	Grafton	Copper	Past Producer	MRDS
Copper Mine	Grafton	Copper	Past Producer	MRDS
Copperville Sand & Gravel	Coos	Construction Sand and Gravel	Abandoned	MSHA
Copps Pond Pit	Carroll	Sand and Gravel, Construction	Past Producer	MRDS
Corson Mine	Rockingham	Beryllium	Past Producer	MRDS
Corson Mine	Rockingham	Feldspar	Past Producer	MRDS
Cottonstone Mountain Quarry	Grafton	Talc-Soapstone	Past Producer	MRDS
Cross Hill Mine	Grafton	Iron	Past Producer	MRDS
Croydon Pyrite Mines	Sullivan	Copper, Zinc	Past Producer	MRDS
Croydon-Corbin Park	Sullivan	Zinc, Copper, Lead	Past Producer	MRDS
Dalton Au Mine	Coos	Copper	Past Producer	MRDS
Dalton Mine	Coos	Gold	Past Producer	MRDS
Danbury Mica Mine	Merrimack	Mica	Past Producer	MRDS
Danville Pit	Rockingham	Construction Sand and Gravel	Abandoned	MSHA
Deerfield Sand & Gravel	Rockingham	Construction Sand and Gravel	Abandoned	MSHA
Derry Sand and Gravel Inc	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
Dockham Sand Pit	Belknap	Sand and Gravel, Construction	Past Producer	MRDS
Dover Sand and Gravel Inc.	Strafford	Construction Sand and Gravel	Abandoned	MSHA
Dover Sand and Gravel Inc	Strafford	Sand and Gravel, Construction	Past Producer	MRDS
Dow Sand & Gravel	Carroll	Construction Sand and Gravel	Abandoned	MSHA
Ducharme Sand and Gravel	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
E. E. Smith Mica Mines	Grafton	Mica	Past Producer	MRDS
East Pond Diatomite	Grafton	Diatomite	Past Producer	MRDS
East Severance Hill Garnet Mine	Merrimack	Garnet	Past Producer	MRDS
Ed Clark Mine	Cheshire	Beryllium	Past Producer	MRDS
Eno Brickyard	Rockingham	Clay	Past Producer	MRDS
Epping Pit	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
Evans & Alger	Grafton	Beryllium	Past Producer	MRDS
Evans Mine	Grafton	Beryllium, Mica, Feldspar	Past Producer	MRDS
Exeter Pit	Rockingham	Sand and Gravel, Construction	Past Producer	MRDS
Extec Robotrac Portable Screen	Grafton	Construction Sand and Gravel	Abandoned	MSHA
Farmington Plant	Strafford	Construction Sand and Gravel	Abandoned	MSHA
Farmington Pit & Mill C618	Strafford	Construction Sand and Gravel	Abandoned	MSHA
Fletcher Feldspar Mine	Cheshire	Feldspar	Past Producer	MRDS
Forsyth Mine	Grafton	Copper	Past Producer	MRDS
Forsyth Mine	Grafton		Past Producer	MRDS
Francestown Soapstone Co. Quarry	Hillsborough	Talc-Soapstone	Past Producer	MRDS

Showing 100 of 383 abandoned mine sites. Browse by county above for complete listings.

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