Mines in Maine

2,156Total

265Active

71Gold

0Coal

1,250Surface

209Underground

Mining in Maine

Federal databases record 2,156 mine and mineral deposit locations in Maine, drawing from the USGS Mineral Resources Data System and MSHA Mine Safety and Health Administration records. Of these, 265 are currently active operations regulated by MSHA. Key commodities include gold (71 sites), silver (138 sites), copper (126 sites).

Maine has 1,250 surface mining sites and 209 underground operations. Surface mining is the dominant method, which is typical in states with accessible mineral deposits and coal seams near the surface.

Map

Counties

Hancock County428 mines23 active Oxford County263 mines25 active Cumberland County154 mines32 active York County154 mines22 active Washington County151 mines12 active Knox County149 mines14 active Aroostook County141 mines12 active Penobscot County132 mines22 active Androscoggin County100 mines25 active Sagadahoc County93 mines7 active Kennebec County90 mines29 active Piscataquis County85 mines6 active Somerset County73 mines10 active Waldo County70 mines11 active Franklin County45 mines5 active Lincoln County28 mines10 active

Notable Mines

Mine	County	Commodity	Type	Status
Robert's Rd Quarry	Sagadahoc	Construction Sand and Gravel	Surface	Active
Topsham Pit & Mill	Sagadahoc	Crushed, Broken Granite	Surface	Active
Christian Hill Quarry	Androscoggin	Construction Sand and Gravel	Surface	Active
Carroll Materials,llc.	York	Construction Sand and Gravel	Surface	Active
Dayton Pit & Mill	York	Construction Sand and Gravel	Surface	Active
Odlin Road Mill & Quarry	Penobscot	Crushed, Broken Traprock	Surface	Active
Wells Quarry C624	York	Crushed, Broken Granite	Surface	Active
St. Laurent Pit	Androscoggin	Construction Sand and Gravel	Surface	Active
C636-Sidney Crushing Facility	Kennebec	Crushed, Broken Limestone NEC	Surface	Active
McGee Construction Pit #2	Kennebec	Construction Sand and Gravel	Surface	Active
Pioneer 3055 #810005	Penobscot	Crushed, Broken Stone NEC	Surface	Active
Bowdoin Quarry	Sagadahoc	Crushed, Broken Stone NEC	Surface	Active
Millennium Granite	York	Dimension Granite	Surface	Active
North Jay White Quarry	Franklin	Construction Sand and Gravel	Surface	Active
Whitefield Pit and Mill	Lincoln	Construction Sand and Gravel	Surface	Active
Sand & Gravel Pit	Kennebec	Construction Sand and Gravel	Surface	Active
Winterport Pit	Waldo	Construction Sand and Gravel	Surface	Active
Brandy Brook Quarry	Cumberland	Crushed, Broken Stone NEC	Surface	Active
Gracelawn	Androscoggin	Construction Sand and Gravel	Surface	Active
Portable Plant	Knox	Construction Sand and Gravel	Surface	Active
Crotch Island	Hancock	Dimension Stone NEC	Surface	Active
K-Pit	York	Construction Sand and Gravel	Surface	Active
Copp Excavation, Inc	Cumberland	Construction Sand and Gravel	Surface	Active
River Road Pit	Cumberland	Construction Sand and Gravel	Surface	Active
Hard Rock Quarry	Knox	Construction Sand and Gravel	Surface	Active

Mines in Maine

Mining in Maine

Map

Counties

Notable Mines

Download & Explore