Abandoned Mines in Connecticut

1,085Abandoned & Historical

Abandoned Mining in Connecticut

Federal databases record 1,085 abandoned, sealed, and historically closed mine locations in Connecticut. 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
Hartford County	202
New London County	201
Litchfield County	164
New Haven County	163
Middlesex County	121
Fairfield County	113
Windham County	66
Tolland County	55

Abandoned Mine Sites

Mine	County	Commodity	Status	Source
127 Main St.	Fairfield	Crushed, Broken Stone NEC	Abandoned	MSHA
1502 Route 85	New London	Crushed, Broken Stone NEC	Abandoned	MSHA
30 Main Street Llc	Hartford	Construction Sand and Gravel	Abandoned	MSHA
57 Brunswick Ave	Windham	Dimension Stone NEC	Abandoned	MSHA
94 Sterling Rd Pit	Windham	Sand, Common	Abandoned	MSHA
Adelman Pit	New London	Sand and Gravel, Construction	Past Producer	MRDS
Aiudi Pit & Mill	Hartford	Crushed, Broken Traprock	Abandoned	MSHA
Alaskite Gneiss Rock Quarry No. Aj-019	New London	Stone	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-002	New London	Stone, Crushed/Broken	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-003	New London	Stone, Crushed/Broken	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-004	New London	Stone	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-026	New London	Stone, Dimension	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-035	New London	Stone, Dimension	Past Producer	MRDS
Alaskite Gneiss Rock Quarry No. Ak-040	New London	Stone	Past Producer	MRDS
Alaskite/quartz Monz. Quarry	Tolland	Stone, Dimension	Past Producer	MRDS
Allyndale Quarry	Litchfield	Limestone, General	Past Producer	MRDS
American 1	Hartford	Construction Sand and Gravel	Abandoned	MSHA
Amphibolite Gneiss Rock Quarries No. Cj-014	Hartford	Stone	Past Producer	MRDS
Amphibolite Gneiss Rockquarry No. Cj-028	Middlesex	Stone	Past Producer	MRDS
Anderson Mica Mines and Swanson Lithia Mine	Middlesex	Mica, Lithium	Past Producer	MRDS
Anderson No. 1 Mica Mine	Middlesex	Mica	Past Producer	MRDS
Andrew Gereg Pit	Fairfield	Sand and Gravel, Construction	Past Producer	MRDS
Andrews Pegmatite Quarry	Middlesex	Feldspar	Past Producer	MRDS
Andrews Quarry	Middlesex	Feldspar	Past Producer	MRDS
Arkose Rock Quarry No. Cj-037	Middlesex	Stone, Dimension	Past Producer	MRDS
Arnold Quarry	Middlesex	Stone, Dimension	Past Producer	MRDS
Arpin Pit	New London	Sand and Gravel, Construction	Past Producer	MRDS
Arsenopyrite Mine No. Ek-017	Fairfield	Arsenic	Past Producer	MRDS
Asbestos Mine	Litchfield	Asbestos	Past Producer	MRDS
B and O Pit	New London	Sand and Gravel, Construction	Past Producer	MRDS
B&r Sand and Gravel	New London	Crushed, Broken Stone NEC	Abandoned	MSHA
Bc Sand & Gravel Co., Inc.	Fairfield	Construction Sand and Gravel	Abandoned	MSHA
Bethel Sand & Gravel Co.	Fairfield	Construction Sand and Gravel	Abandoned	MSHA
Bluestone Quarry	New Haven	Crushed, Broken Granite	Abandoned	MSHA
Bainerd Quarry	Middlesex	Feldspar	Past Producer	MRDS
Barite Mine	New Haven	Barium-Barite	Past Producer	MRDS
Barite Mine	New Haven	Barium-Barite	Past Producer	MRDS
Barite Mine No. Dj.010	New Haven	Barium-Barite	Past Producer	MRDS
Barite Occurrence No. Dj-010	New Haven	Barium-Barite	Past Producer	MRDS
Bart Lo Russo & Sons Inc	New Haven	Crushed, Broken Stone NEC	Abandoned	MSHA
Basalt Rock Quarries Ii No. Dj-033	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarries No. Ck-006	Middlesex	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarries No. Ck-007	New Haven	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarries No. Dj-024	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarries No. Dj-031	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-063	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-064	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-065	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-067	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-068	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-069	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-071	Middlesex	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Cj-071.	Middlesex	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. Ck-006.	Middlesex	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. Di-004	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Di-010	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Di-011	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-0	New Haven	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. Dj-021	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-025	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-028	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-030	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-032	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-034	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dj-035	Hartford	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dk-011	New Haven	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dk-013	New Haven	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. Dk-014	New Haven	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Dk-014	New Haven	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. Dk-022	New Haven	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Ej-011	New Haven	Stone, Crushed/Broken	Past Producer	MRDS
Basalt Rock Quarry No. Ej-011	New Haven	Stone, Dimension	Past Producer	MRDS
Basalt Rock Quarry No. El-003	Fairfield	Stone, Crushed/Broken	Past Producer	MRDS
Bassett Arsenopyrite Mine	New Haven	Arsenic	Past Producer	MRDS
Battle Hill Quarries	Litchfield	Marble, Dimension	Past Producer	MRDS
Bawza Stone Llc	Windham	Dimension Stone NEC	Abandoned	MSHA
Beacon Falls Pit	New Haven	Sand and Gravel, Construction	Past Producer	MRDS
Beacon Falls Wash Plant #2	New Haven	Construction Sand and Gravel	Abandoned	MSHA
Bell City Pit	Hartford	Sand and Gravel, Construction	Past Producer	MRDS
Bellamy Copper Valley Mine	New Haven	Sulfur, Copper, Barium-Barite	Past Producer	MRDS
Bellamy-Copper Valley Mine	New Haven	Copper	Past Producer	MRDS
Benedict Granite Gneiss Rock Quarry	Litchfield	Stone, Dimension	Past Producer	MRDS
Benedict Quarry	Litchfield	Granite	Past Producer	MRDS
Bennett Quarries	Windham	Granite	Past Producer	MRDS
Benvenue Granite Gneiss Rock Quarries	Middlesex	Stone, Dimension	Past Producer	MRDS
Benvenue Quarries	Middlesex	Granite	Past Producer	MRDS
Berin Pit	Hartford	Sand and Gravel, Construction	Past Producer	MRDS
Berlin Moore's Mill Barite Mine	Hartford	Barium-Barite	Past Producer	MRDS
Berlin Pit	Hartford	Sand and Gravel, Construction	Past Producer	MRDS
Bernard J. Dolan Co. Sand Pit	Fairfield	Sand and Gravel, Construction	Past Producer	MRDS
Bethel Feldspar Pegmatite Quarry	Fairfield	Feldspar	Past Producer	MRDS
Bethel Pegmatite Quarry	Fairfield	Stone, Dimension	Past Producer	MRDS
Billings Road Pit	Tolland	Sand and Gravel, Construction	Past Producer	MRDS
Biotite Gneiss Rock Quarry	New London	Stone, Dimension	Past Producer	MRDS
Biotite Gneiss Rock Quarry No. Aj-016	New London	Stone	Past Producer	MRDS
Biotite Granite Gneiss Quarries No. Bk-005	New London	Stone	Past Producer	MRDS
Biotite Granitic Gneiss Rock Quarry	New London	Granite	Past Producer	MRDS
Biotite Muscovite Schist Rock Quarry No. Aj-018	New London	Stone	Past Producer	MRDS
Bison Brook Farms	New London	Construction Sand and Gravel	Abandoned	MSHA
Blue Rock Portable	New Haven	Crushed, Broken Stone NEC	Abandoned	MSHA

Showing 100 of 1,085 abandoned mine sites. Browse by county above for complete listings.

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