Mines in Knox County, Maine

Knox County, Maine has 149 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 14 of these are currently active mining operations. The most commonly recorded commodity is stone, crushed/broken, with 47 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Knox County

Mine	Commodity	Type	Status	Source
Hard Rock Quarry	Construction Sand and Gravel	Surface	Active	MSHA
Portable Plant	Construction Sand and Gravel	Surface	Active	MSHA
Ferraiolo Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Foley Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Foley Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Foley Pit Waldboro	Sand and Gravel, Construction	Surface	Producer	MRDS
Griffin Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Rockland Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Thomaston Quarry & Cement Mill	Stone, Crushed/Broken	Surface	Producer	MRDS
Union Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Warren Aggregate Pit	Stone, Crushed/Broken	Surface	Producer	MRDS
Warren Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Warren Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Washington Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
341 Rock Quarry	Crushed, Broken Stone NEC	Surface	Intermittent	MSHA
Achorn Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Appleton Mine	Copper		Occurrence	MRDS
Appleton Prospect		Underground	Unknown	MRDS
Armbrust Quarry	Granite	Surface	Past Producer	MRDS
Astec Gt165	Construction Sand and Gravel	Surface	Intermittent	MSHA
Astec Gt165df Mobile Screening Plant	Construction Sand and Gravel	Surface	Intermittent	MSHA
Austin Pasture Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Bartlett Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Bassick Quarry	Granite	Surface	Past Producer	MRDS
Beechwood Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Black Quarry	Granite	Surface	Past Producer	MRDS
Blackington Farm Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Bodwell Black Granite Quarry	Granite	Surface	Past Producer	MRDS
Bog Hole Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Brown Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Burnt Island Prospect	Iron		Prospect	MRDS
Cedarapids Crc1150s	Construction Sand and Gravel	Surface	Intermittent	MSHA
Charles Crockett Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Clark Island Quarry	Granite	Surface	Past Producer	MRDS
Crawford Pond	Nickel, Copper, Cobalt		Occurrence	MRDS
Creighton Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Creighton Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Crusher C654	Construction Sand and Gravel	Surface	Intermittent	MSHA
Cundell Island Quarry	Granite	Surface	Past Producer	MRDS
Cushing Pit	Construction Sand and Gravel	Surface	Intermittent	MSHA
Davis Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Dix Island Quarry	Granite	Surface	Past Producer	MRDS
Dougherty Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Duschane Hill Quarry	Granite	Surface	Past Producer	MRDS
Eels Mine	Silver, Copper		Past Producer	MRDS
Engine Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Fox Island Quarry	Dimension Stone NEC	Surface	Abandoned	MSHA
Flat Ledge Quarry	Granite	Surface	Past Producer	MRDS
Fulling Mill Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
G U Ulmer Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Gay Quarry	Calcium	Surface	Past Producer	MRDS
George C Hall	Sand and Gravel, Construction		Past Producer	MRDS
George Gins Quarry	Granite	Surface	Past Producer	MRDS
Goose River Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Green Quarry	Granite	Surface	Past Producer	MRDS
Gross Mine		Underground	Unknown	MRDS
Heritage Valley Quarry	Crushed, Broken Granite	Surface	Abandoned	MSHA
Harbor Quarry	Granite	Surface	Past Producer	MRDS
Hard Rock Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Harriman Prospect	Nickel, Copper		Occurrence	MRDS
Harriman Prospect	Nickel	Surface	Prospect	MRDS
Hart Pit	Construction Sand and Gravel	Surface	Abandoned	MSHA
High Isle Quarry	Granite	Surface	Past Producer	MRDS
Hocking Granite Quarry	Granite	Surface	Past Producer	MRDS
Hurley Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Hurricane Island Quarries	Granite	Surface	Past Producer	MRDS
Indian Creek Quarry	Granite	Surface	Past Producer	MRDS
Island City Prospect	Lead		Prospect	MRDS
Isle Au Haut Prospect		Underground	Unknown	MRDS
Jacob's Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
John Swenson	Granite		Past Producer	MRDS
Knox	Nickel	Surface	Occurrence	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken		Unknown	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken		Unknown	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken		Unknown	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken		Unknown	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken		Unknown	MRDS
Knox Lime Co. Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Knox Lime Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Knox Lime Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Knox Lime Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Liberty Pit Crusher	Construction Sand and Gravel	Surface	Abandoned	MSHA
Lily Pond Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Lime Products Corp	Limestone, General		Past Producer	MRDS
Lime Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Limestone Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Limestone Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Long Cove Quarry	Granite	Surface	Past Producer	MRDS
Magnesia Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Marine Transportation Corp	Limestone, General		Past Producer	MRDS
Marriners, Inc.	Construction Sand and Gravel	Surface	Abandoned	MSHA
Martin Marietta Cement	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Martin-Marietta Cement Corp	Calcium		Past Producer	MRDS
Mc Conchie Black Granite Quarry	Granite	Surface	Past Producer	MRDS
McLoon Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Mills Excavation Inc.	Crushed, Broken Stone NEC	Surface	Intermittent	MSHA
Nichols Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Nordberg Cv 100	Construction Sand and Gravel	Surface	Temporarily Idled	MSHA
O B Ulmer Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Oe-15 Extec Screener	Construction Sand and Gravel	Surface	Abandoned	MSHA
Owl's Head Prospect	Gold	Surface-Underground	Prospect	MRDS
Page Mine	Gold		Past Producer	MRDS
Paint Hole Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Palmer Quarry	Granite	Surface	Past Producer	MRDS
Pease Pit	Construction Sand and Gravel	Surface	Temporarily Idled	MSHA
Pequoit Quarry	Granite	Surface	Past Producer	MRDS
Pequoit; Sands; Duchesnehill Granite Quarries	Molybdenum, Zirconium		Occurrence	MRDS
Pike Washington	Construction Sand and Gravel	Surface	Intermittent	MSHA
Pioneer Jaw Crusher & Metso Cone Crusher	Construction Sand and Gravel	Surface	Intermittent	MSHA
Portable Pioneer Plant	Crushed, Broken Limestone NEC	Surface	Intermittent	MSHA
Porterfield Ledge Mine	Silver		Prospect	MRDS
Portersfield Prospect		Underground	Unknown	MRDS
Powerscreen Premiertrak 400x	Construction Sand and Gravel	Surface	Intermittent	MSHA
Quarry- 2	Construction Sand and Gravel	Surface	Temporarily Idled	MSHA
Ranta Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Riverside Mine	Lead		Past Producer	MRDS
Riverside Prospect		Underground	Unknown	MRDS
Rockland City Prospect	Silver	Underground	Prospect	MRDS
Rockland Plant	Perlite	Processing Plant	Plant	MRDS
Roland Cushee Farm Prospect	Copper		Occurrence	MRDS
Sands Quarry	Granite	Surface	Past Producer	MRDS
Shephard Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Simonton Corners Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Sleeper Field Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Snow Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Soft Rock Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Sprucehead Quarry	Granite	Surface	Past Producer	MRDS
Starr Brothers Inc	Sand and Gravel, Construction		Past Producer	MRDS
Starrett Mine	Feldspar		Past Producer	MRDS
Starrett Property	Lithium		Past Producer	MRDS
Starrett Prospect	Feldspar		Prospect	MRDS
State Prison Farm Prospect	Feldspar		Prospect	MRDS
Sukeforth Excavation & Trucking	Construction Sand and Gravel	Surface	Intermittent	MSHA
Thomaston Cement Plant	Cement	Facility	Abandoned	MSHA
Thomaston Mill	Sand and Gravel, Construction	Processing Plant	Plant	MRDS
Thomaston Pit	Construction Sand and Gravel	Surface	Intermittent	MSHA
Thomaston Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Tony Lash Excavation	Construction Sand and Gravel	Surface	Intermittent	MSHA
Unnamed Mine	Silver		Prospect	MRDS
Unnamed Quarry	Granite	Surface	Past Producer	MRDS
Unnamed Quarry	Granite	Surface	Past Producer	MRDS
Warren Nickel Deposit	Cobalt, Nickel		Occurrence	MRDS
Washington Crusher	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Washington Pit #2	Construction Sand and Gravel	Surface	Temporarily Idled	MSHA
Washington Quarry	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Webster Quarry	Granite	Surface	Past Producer	MRDS
Weskeag Quarry	Granite	Surface	Past Producer	MRDS
Wildcat Quarry	Granite	Surface	Past Producer	MRDS
Williams Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS