Mines in Hancock County, Maine

Hancock County, Maine has 428 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 23 of these are currently active mining operations. The most commonly recorded commodity is granite, with 78 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Hancock County

Mine	Commodity	Type	Status	Source
Crotch Island	Dimension Stone NEC	Surface	Active	MSHA
Dority Pit	Construction Sand and Gravel	Surface	Active	MSHA
Doug Gott & Sons Inc Portable Sc	Construction Sand and Gravel	Surface	Active	MSHA
Ellsworth Portable Plant	Construction Sand and Gravel	Surface	Active	MSHA
East Blue Hill Pit - Portable #1	Construction Sand and Gravel	Surface	Active	MSHA
B and H Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Black Hawk - Blue Hill Zn - Cu	Zinc, Copper		Producer	MRDS
Blue Hill Mine (1880s)	Zinc, Lead, Copper		Producer	MRDS
Blue Hill Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Byron P. Young Sand and Gravel Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Cemetery Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Crotch Island Quarry	Stone, Dimension	Surface	Producer	MRDS
Eastbrook Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Ellsworth City Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Ellsworth Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Ellsworth Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Garland Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Goodwin Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Gross Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Hooper Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Lamoine Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Smith Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Winter Harbor Pit and Mill	Sand and Gravel, Construction	Surface	Producer	MRDS
2023 Read Screen	Construction Sand and Gravel	Surface	Intermittent	MSHA
2nd Read Portable Screen	Construction Sand and Gravel	Surface	Intermittent	MSHA
450 Rt Roto	Construction Sand and Gravel	Surface	Intermittent	MSHA
4th Gen Sand & Gravel	Construction Sand and Gravel	Surface	Intermittent	MSHA
A R Whitten and Son Inc	Sand and Gravel, Construction		Past Producer	MRDS
Abner Gray		Underground	Unknown	MRDS
Acadia Peat Corporation	Peat		Past Producer	MRDS
Allen Quarry	Granite	Surface	Past Producer	MRDS
Alonzo Abbot Quarry	Granite	Surface	Past Producer	MRDS
American Union Mine	Silver		Prospect	MRDS
Angell and Haggerty Quarry	Granite	Surface	Past Producer	MRDS
Annear Prospect		Underground	Unknown	MRDS
Ashley Mine	Silver	Underground	Past Producer	MRDS
Atlantic Mine	Gold, Silver, Copper		Past Producer	MRDS
Atlantic Mine		Underground	Unknown	MRDS
Azure Mine	Copper	Underground	Prospect	MRDS
Bfp Mine	Construction Sand and Gravel	Surface	Intermittent	MSHA
Baird Quarry	Granite	Surface	Past Producer	MRDS
Bangor and Blue Hill Falls Mine		Underground	Unknown	MRDS
Bass Harbor Portable Plant	Construction Sand and Gravel	Surface	Intermittent	MSHA
Bay View Copper Prospect		Underground	Unknown	MRDS
Bay View Prospect		Underground	Unknown	MRDS
Beacon Hill Mine		Underground	Unknown	MRDS
Belle of Deer Isle Mine	Lead	Underground	Prospect	MRDS
Benvenue Quarry	Granite	Surface	Past Producer	MRDS
Bianchi Quarry	Granite	Surface	Past Producer	MRDS
Big Quarry	Granite	Surface	Past Producer	MRDS
Bisbee Mine		Underground	Unknown	MRDS
Bisbee Mine	Silver, Copper		Past Producer	MRDS
Black Island	Iron		Past Producer	MRDS
Black Island Mine	Iron		Past Producer	MRDS
Black Island Quarries	Granite	Surface	Past Producer	MRDS
Black Island Quarries	Granite	Surface	Past Producer	MRDS
Blackhawk Mine	Copper, Zinc, Lead		Past Producer	MRDS
Blodgett Prospect		Underground	Unknown	MRDS
Blodgett Prospect	Copper		Occurrence	MRDS
Blue Hill	Tungsten		Unknown	MRDS
Blue Hill Bay Prospect		Underground	Unknown	MRDS
Blue Hill Central	Copper		Past Producer	MRDS
Blue Hill Central Mine		Underground	Unknown	MRDS
Blue Hill Granite Company Quarry	Granite	Surface	Past Producer	MRDS
Blue Hill Jt. Venture	Copper, Zinc	Underground	Plant	MRDS
Blue Hill Jt. Venture Concentrator	Copper	Processing Plant	Plant	MRDS
Blue Hill Manganese Mine	Manganese	Surface-Underground	Past Producer	MRDS
Blue Hills Falls	Molybdenum		Occurrence	MRDS
Boss O' the Bay	Lead, Copper		Past Producer	MRDS
Boss O' the Bay Mine		Underground	Unknown	MRDS
Boston Silver Mine	Lead	Underground	Prospect	MRDS
Bradbury & Perkins Quarry	Granite	Surface	Past Producer	MRDS
Bradbury & Sons Quarry	Granite	Surface	Past Producer	MRDS
Bragdon	Molybdenum		Occurrence	MRDS
Bragdon, Fernald & Gordon Quarry	Granite	Surface	Past Producer	MRDS
Brian Billings Excavation Llc	Construction Sand and Gravel	Surface	Abandoned	MSHA
Brimmer Mine	Silver		Prospect	MRDS
Brimmer Silver Mine	Copper, Silver		Past Producer	MRDS
Brooklin Mine	Gold		Prospect	MRDS
Brooksville		Underground	Unknown	MRDS
Brown Mine	Silver		Prospect	MRDS
Brown Quarry	Granite	Surface	Past Producer	MRDS
Brown's Meadow Quarry	Dimension Granite	Surface	Abandoned	MSHA
Bucks Harbor Quarry	Granite	Surface	Past Producer	MRDS
Bucksport Mine	Silver		Prospect	MRDS
Butler Mine	Gold	Underground	Prospect	MRDS
Byron P Young Sand and Gravel	Sand and Gravel, Construction		Past Producer	MRDS
Cec Screen	Construction Sand and Gravel	Surface	Abandoned	MSHA
Calvin Ames Quarry	Granite	Surface	Past Producer	MRDS
Campbell & Macomber Quarry	Granite	Surface	Past Producer	MRDS
Campbell Prospect	Copper		Prospect	MRDS
Campbell Prospect	Silver, Zinc, Copper		Occurrence	MRDS
Candage Copper Mine and Prospect Pit	Copper		Occurrence	MRDS
Candage Farm Prospect (1836)	Molybdenum, Tungsten		Occurrence	MRDS
Candage Mine		Underground	Unknown	MRDS
Cape Rosier Mine (1968-1972)	Zinc, Copper		Past Producer	MRDS
Cape Rosier Zn-Cu-P6 Mine	Zinc	Underground	Past Producer	MRDS
Carroll Quarry	Granite	Surface	Past Producer	MRDS
Carter Prospect	Copper		Prospect	MRDS
Castine Prospect		Underground	Unknown	MRDS
Catherine Hill Mine	Molybdenum	Surface	Past Producer	MRDS
Catherine Hill Molybdenite Prospect	Molybdenum		Occurrence	MRDS
Chase Quarries	Granite	Surface	Past Producer	MRDS
Chester Mine	Copper		Prospect	MRDS
Chief Isle Mine	Silver		Prospect	MRDS
Church Quarry	Dimension Stone NEC	Surface	Temporarily Idled	MSHA
Cianbro Corporation	Sand and Gravel, Construction		Past Producer	MRDS
City Line Sand & Gravel	Construction Sand and Gravel	Surface	Abandoned	MSHA
City of Boston	Copper		Past Producer	MRDS
City of Boston Prospect		Underground	Unknown	MRDS
Clark Mine	Copper	Underground	Past Producer	MRDS
Clark Mine		Underground	Unknown	MRDS
Clark and Clark Extension Mines	Gold, Silver, Copper		Past Producer	MRDS
Clergue & Pol Mine	Silver		Occurrence	MRDS
Cline Prospect		Underground	Unknown	MRDS
Clyde Limeburger Prospect	Zinc, Lead, Gold, Copper		Prospect	MRDS
Clyde Limeburner Prospect	Copper, Lead, Zinc		Occurrence	MRDS
Collins Quarries	Granite	Surface	Past Producer	MRDS
Colton and Highlands Mine		Underground	Unknown	MRDS
Comstock Prospect	Lead	Underground	Prospect	MRDS
Coombs Quarry	Granite	Surface	Past Producer	MRDS
Copper Harbor Prospect		Underground	Unknown	MRDS
Copper Mine	Copper		Prospect	MRDS
Copperopolis (Custer) Mine	Silver, Lead		Past Producer	MRDS
Copperopolis Mine	Copper	Underground	Occurrence	MRDS
Crabtree & Havey Quarry	Granite	Surface	Past Producer	MRDS
Crotch Island Quarry	Granite	Surface	Past Producer	MRDS
Curtis Mine	Silver		Prospect	MRDS
Curtis Prospect		Underground	Unknown	MRDS
Custer Extension Prospect		Underground	Unknown	MRDS
Custer Mine		Underground	Unknown	MRDS
D.l.higgins Prospect		Underground	Unknown	MRDS
Darling Copper Mine	Silver, Lead, Copper		Past Producer	MRDS
Darling Mine		Underground	Unknown	MRDS
Deer Isle Jr Mine	Silver	Underground	Prospect	MRDS
Deer Isle Mine (1870s, 1907-1910?)	Lead, Zinc		Past Producer	MRDS
Deer Isle Mine Prospect		Underground	Past Producer	MRDS
Deer Isle Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Dirigo Mine	Lead	Underground	Past Producer	MRDS
Doneton Mine	Silver		Prospect	MRDS
Donlon Prospect	Sulfur		Occurrence	MRDS
Donlon Prospect	Copper		Past Producer	MRDS
Doorstone Quarry	Granite	Surface	Past Producer	MRDS
Douglas Copper Mine	Copper		Past Producer	MRDS
Douglas Mine		Underground	Past Producer	MRDS
Dunbar Brothers Quarry	Granite	Surface	Past Producer	MRDS
Dunham Mine	Silver		Prospect	MRDS
Dunham Silver Mine	Silver		Past Producer	MRDS
Eagle Brook Mine	Lead		Prospect	MRDS
Early Dawn Mine	Silver		Prospect	MRDS
Early Dawn Silver Mine	Silver		Past Producer	MRDS
East Blue Hill Mine	Lead	Underground	Past Producer	MRDS
East Surry Prospect		Underground	Unknown	MRDS
Eastern Belle Mine	Gold	Underground	Prospect	MRDS
Eastern Mine	Lead		Prospect	MRDS
Eastern Star Mine	Gold	Underground	Prospect	MRDS
Eastern Star Mine	Gold, Silver		Past Producer	MRDS
Eclipse Prospect		Underground	Unknown	MRDS
Eggemoggin Mine		Underground	Unknown	MRDS
Eggemoggin Silver Mine (1876)			Past Producer	MRDS
Egypt Mine		Underground	Unknown	MRDS
Emerson & North Castine	Copper, Lead, Zinc		Past Producer	MRDS
Emerson Mine	Lead	Underground	Past Producer	MRDS
Emerson-North Castine Prospec		Underground	Prospect	MRDS
Emma Albina Mine	Silver		Prospect	MRDS
Eureka Mine		Underground	Unknown	MRDS
Eureka Mining Co.	Copper, Silver, Zinc, Lead		Past Producer	MRDS
Excelsior Mine		Underground	Past Producer	MRDS
Finlay/terex	Construction Sand and Gravel	Surface	Intermittent	MSHA
Fannueil Hall & Sullivan	Silver, Gold		Past Producer	MRDS
Favorite Copper Mine	Silver, Lead, Copper		Past Producer	MRDS
Favorite Mine		Underground	Unknown	MRDS
Ford Mine	Silver		Prospect	MRDS
Franeuil Hall & Sullivan Mine	Silver	Underground	Past Producer	MRDS
Franklin Extension Mine		Underground	Prospect	MRDS
Franklin Mine	Silver	Underground	Prospect	MRDS
Franklin Quarry	Granite	Surface	Past Producer	MRDS
Franklin Road Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Franklin and Franklin Extension Mine	Lead		Past Producer	MRDS
Frenchman's Bay		Underground	Unknown	MRDS
Frenchman's Bay Silver Mine	Copper, Lead, Gold, Silver		Past Producer	MRDS
Fulton Mine	Silver	Surface	Prospect	MRDS
G.e.smith Prospect		Underground	Unknown	MRDS
G.y.mills		Underground	Unknown	MRDS
Garland Road Pit	Construction Sand and Gravel	Surface	Intermittent	MSHA
Gerry Mine	Silver		Prospect	MRDS
Globe Mine	Lead	Underground	Past Producer	MRDS
Golden Circle Mine	Gold	Underground	Past Producer	MRDS
Golden Circle Mine	Gold, Silver		Past Producer	MRDS
Goodwin Quarry	Granite	Surface	Past Producer	MRDS
Gouldsboro Mine		Surface-Underground	Unknown	MRDS
Gouldsboro Mine (1878-1928)	Copper, Lead		Past Producer	MRDS
Granger Mine	Iron	Underground	Past Producer	MRDS
Granger Mine	Silver, Manganese, Tin, Sulfur, Iron, Copper, Gold		Past Producer	MRDS
Grant Mine		Underground	Unknown	MRDS
Graves Brothers Quarry	Granite	Surface	Past Producer	MRDS
Gray Mine	Silver	Underground	Prospect	MRDS
Gray Silver Mine			Past Producer	MRDS
Green Lake Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Grindle Quarry	Granite	Surface	Past Producer	MRDS
Hagan & Wilcox Quarry	Granite	Surface	Past Producer	MRDS
Hagan Mine	Silver		Prospect	MRDS
Hale Prospect		Underground	Unknown	MRDS
Hall Mine		Underground	Unknown	MRDS
Hall Quarry	Dimension Granite	Surface	Abandoned	MSHA
Hamilton Prospect		Underground	Unknown	MRDS
Hancock Mine		Underground	Unknown	MRDS
Hancock Plant	Construction Sand and Gravel	Surface	Abandoned	MSHA
Harold Mac Quinn	Sand and Gravel, Construction		Past Producer	MRDS
Harold Mac Quinn Inc	Sand and Gravel, Construction		Past Producer	MRDS
Harold Mac Quinn Inc	Stone, Crushed/Broken		Past Producer	MRDS
Harold Mac Quinn Inc	Sand and Gravel, Construction		Past Producer	MRDS
Hector Mine		Underground	Unknown	MRDS
Hercules Mine	Zinc, Copper, Lead		Past Producer	MRDS
Hercules Prospect		Underground	Prospect	MRDS
Herrick Quarries	Granite	Surface	Past Producer	MRDS
Highland Prospect	Copper		Prospect	MRDS
Highland Prospect	Copper		Occurrence	MRDS
Highland Quarry	Construction Sand and Gravel	Surface	Intermittent	MSHA
Highway Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Hinckley Prospect	Silver, Gold		Past Producer	MRDS
Home Mine		Underground	Unknown	MRDS
Home Silver Mine	Copper, Silver, Lead		Past Producer	MRDS
Hooper, Havey & Co. Quarry	Granite	Surface	Past Producer	MRDS
Hopewell Quarry	Granite	Surface	Past Producer	MRDS
Howard Quarry	Granite	Surface	Past Producer	MRDS
Hulls Cove Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
J S Douglas Mine	Silver		Prospect	MRDS
J.e Carter Property Clay Mine	Clay	Surface	Past Producer	MRDS
J.p.tapley Prospect		Underground	Unknown	MRDS
Jersey Mine		Underground	Unknown	MRDS
Joe's Quarry	Granite	Surface	Past Producer	MRDS
John Swenson Granite Co	Granite		Past Producer	MRDS
Jones Jones and Dodge Prospect		Underground	Prospect	MRDS
Jones Prospect	Silver, Zinc, Lead, Copper		Occurrence	MRDS
Kenney Grindle Mine	Copper		Prospect	MRDS
Kleeman Track Jaw	Construction Sand and Gravel	Surface	Abandoned	MSHA
Kleemann Evo	Construction Sand and Gravel	Surface	Intermittent	MSHA
Lady Elgin Mine		Underground	Unknown	MRDS
Lady Elgin Mine	Silver, Copper		Past Producer	MRDS
Latty Brothers Quarry	Granite	Surface	Past Producer	MRDS
Leach Shaft (1969-71)	Zinc, Copper		Past Producer	MRDS
Leigh Limeburner Prospect	Silver, Zinc, Copper, Lead		Occurrence	MRDS
Little Blue Hill Mine	Silver		Prospect	MRDS
Little Chief Mine	Silver		Prospect	MRDS
Little Sue Mine		Underground	Unknown	MRDS
Long Island Molybdenite Occurrence, East Shore	Molybdenum, Tungsten		Occurrence	MRDS
Long Island Prospect	Molybdenum		Prospect	MRDS
Long Island Quarry	Granite	Surface	Past Producer	MRDS
Lymburner Prospect	Silver, Iron, Copper		Prospect	MRDS
Lymburner Prospect	Copper		Occurrence	MRDS
Mackenzie Quarry	Dimension Granite	Surface	Abandoned	MSHA
Maine Lake Ice Company Quarry	Granite	Surface	Past Producer	MRDS
Mammoth Lot	Zinc	Underground	Past Producer	MRDS
Mammoth Mine	Copper, Lead, Silver, Zinc	Underground	Past Producer	MRDS
Mammoth Mine	Copper		Past Producer	MRDS
Manhattan Mine		Underground	Unknown	MRDS
Manhattan Mine	Gold, Silver, Copper		Past Producer	MRDS
Manning Quarry	Granite	Surface	Past Producer	MRDS
Mansfield Mine		Underground	Unknown	MRDS
Masaba Closed Circuit Plant	Construction Sand and Gravel	Surface	Abandoned	MSHA
McFarland Mine		Underground	Unknown	MRDS
McIntyre Mine	Zinc, Lead, Copper		Past Producer	MRDS
McMullen Quarry	Granite	Surface	Past Producer	MRDS
Menton Hill Mine	Silver		Prospect	MRDS
Merrill Quarry	Granite	Surface	Past Producer	MRDS
Mill Road Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Millbrook Mine	Silver	Underground	Past Producer	MRDS
Millbrook Mine	Silver, Gold		Past Producer	MRDS
Milton Mine		Underground	Unknown	MRDS
Milton Silver Mine	Copper, Silver, Lead		Past Producer	MRDS
Moose Island Quarry	Granite	Surface	Past Producer	MRDS
Morancy Mine		Underground	Unknown	MRDS
Morancy Mine	Silver, Copper		Past Producer	MRDS
Mt. Desert At Bass Habor	Iron		Past Producer	MRDS
N.perkins Prospect		Underground	Unknown	MRDS
North Blue Hill Mine	Silver		Prospect	MRDS
North Castine Mine	Lead	Underground	Past Producer	MRDS
Northwoods Quarry	Dimension Granite	Surface	Intermittent	MSHA
Nubble Quarry	Granite	Surface	Past Producer	MRDS
O R Smith Mine	Lead		Prospect	MRDS
O'Conner Prospect	Tin		Occurrence	MRDS
Oakland Mine	Silver	Underground	Prospect	MRDS
Oakland Silver Mine	Silver		Past Producer	MRDS
Oceanville Quarry	Granite	Surface	Past Producer	MRDS
Old Mispickle Mine	Gold	Underground	Prospect	MRDS
Orland Quarry	Granite	Surface	Past Producer	MRDS
Owen Lead Prospect		Surface	Prospect	MRDS
Owen Lead Prospect	Silver, Lead, Copper, Zinc		Past Producer	MRDS
Owen Mine		Underground	Unknown	MRDS
Owen Mine	Copper		Past Producer	MRDS
Portable Ac Crusher	Construction Sand and Gravel	Surface	Intermittent	MSHA
Portable Plant	Construction Sand and Gravel	Surface	Intermittent	MSHA
Parmachenee Zn - Cu - Pb Deposit	Copper, Zinc		Prospect	MRDS
Pelican Mine	Silver		Prospect	MRDS
Penobscot Mine	Silver	Underground	Prospect	MRDS
Penobscot Prospect			Occurrence	MRDS
Penobscot Quarry	Granite	Surface	Past Producer	MRDS
Penobscot Unit		Surface-Underground	Past Producer	MRDS
Pentagoet Mine	Gold, Lead	Underground	Past Producer	MRDS
Perini Corporation	Granite		Past Producer	MRDS
Perkins Prospect	Copper		Occurrence	MRDS
Pernald Brothers & Higgins Quarry	Granite	Surface	Past Producer	MRDS
Pettee Black Granite Quarry	Granite	Surface	Past Producer	MRDS
Pine Tree Mine	Copper, Lead, Zinc	Underground	Past Producer	MRDS
Pine Tree Silver Mine	Lead, Silver		Past Producer	MRDS
Pittsburg Quarry	Granite	Surface	Past Producer	MRDS
Portable Crusher No. 1	Sand and Gravel, Construction	Processing Plant	Plant	MRDS
Portland & Sullivan	Silver		Past Producer	MRDS
Portland & Sullivan Mine	Silver	Underground	Past Producer	MRDS
Portland-Blue Hill Mine	Gold		Prospect	MRDS
Pretty Marsh Mills, Pretty Marsh Harbor	Molybdenum		Occurrence	MRDS
Producer Kjd1	Construction Sand and Gravel	Surface	Intermittent	MSHA
Read Portable Screen	Construction Sand and Gravel	Surface	Abandoned	MSHA
Revere Copper and Silver Mine	Silver, Iron, Lead, Copper		Past Producer	MRDS
Revere Prospect		Underground	Unknown	MRDS
Rich Prospect	Gold		Prospect	MRDS
Richardson Bros. Quarry	Granite	Surface	Past Producer	MRDS
Robert Emmet Silver Mine	Gold, Silver, Copper, Lead		Past Producer	MRDS
Robert Emmett Prospect		Underground	Unknown	MRDS
Robertson Quarry	Granite	Surface	Past Producer	MRDS
Romer Prospect		Underground	Unknown	MRDS
Rosier Extension Prospect		Underground	Unknown	MRDS
Rowantrees Inc	Clay		Past Producer	MRDS
Royce Mine	Silver		Prospect	MRDS
Russ Clay Mine	Gold, Silver	Surface	Prospect	MRDS
Ryan-Parker Quarry	Granite	Surface	Past Producer	MRDS
S.h.robbins Prospect		Underground	Unknown	MRDS
Salem and Sullivan Mine		Underground	Unknown	MRDS
Sargents Quarry	Granite	Surface	Past Producer	MRDS
Sawyer Mine	Silver		Prospect	MRDS
Seal Cove Quarries	Granite	Surface	Past Producer	MRDS
Second Pond Prospect	Zinc, Lead, Iron, Copper		Prospect	MRDS
Sedgwick Quarry	Granite	Surface	Past Producer	MRDS
Settlement Quarry	Granite	Surface	Past Producer	MRDS
Shepardson Prospect	Copper		Past Producer	MRDS
Sherardson Prospect		Underground	Unknown	MRDS
Sherwood Quarries, Lower	Granite	Surface	Past Producer	MRDS
Sherwood Quarries, Upper	Granite	Surface	Past Producer	MRDS
Silver Brook Mine	Gold		Prospect	MRDS
Silver Lake Mine	Silver		Prospect	MRDS
Silver Reef Prospect		Underground	Unknown	MRDS
Sinclair Black Granite Quarry	Granite	Surface	Past Producer	MRDS
Snow		Underground	Unknown	MRDS
Snowflake Quarries	Granite	Surface	Past Producer	MRDS
Spyder 516t	Construction Sand and Gravel	Surface	Intermittent	MSHA
St. Helena Island Quarry	Granite	Surface	Past Producer	MRDS
Star of the East	Silver, Zinc, Lead, Copper		Past Producer	MRDS
Stave Island Mine	Silver		Prospect	MRDS
Stewart Mine		Surface-Underground	Unknown	MRDS
Stewart Quarry	Granite	Surface	Past Producer	MRDS
Stimson Quarries	Granite	Surface	Past Producer	MRDS
Stonington Quarries	Granite	Surface	Past Producer	MRDS
Stonington Quarry	Granite	Surface	Past Producer	MRDS
Stover Hill	Gold, Silver, Copper		Past Producer	MRDS
Stover Hill Mine		Underground	Unknown	MRDS
Stratton Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Sullivan & Waukeag Mine (1878-1884)	Copper, Lead		Past Producer	MRDS
Sullivan Falls Mine	Lead	Underground	Prospect	MRDS
Sullivan Mine		Underground	Past Producer	MRDS
Sunburst Mine		Underground	Unknown	MRDS
Sunset Avenue Quarry	Dimension Stone NEC	Surface	Abandoned	MSHA
Swan Copper Mine	Copper, Silver, Lead		Past Producer	MRDS
Swan Mine	Copper, Lead	Underground	Past Producer	MRDS
Swans Island Mine	Gold	Underground	Prospect	MRDS
Swazey Copper Mine	Copper		Past Producer	MRDS
Swazey Mine		Underground	Unknown	MRDS
Swett Mine	Silver		Prospect	MRDS
T.c.tapley Prospect		Underground	Unknown	MRDS
T.m. Blaisdell Quarry	Granite	Surface	Past Producer	MRDS
Tc Gravel Pit	Construction Sand and Gravel	Surface	Intermittent	MSHA
Tapley Mine		Underground	Past Producer	MRDS
Tapley Mine (1880-1907?)	Copper		Unknown	MRDS
Taylor Quarry	Granite	Surface	Past Producer	MRDS
Telsmith Cone Crusher	Construction Sand and Gravel	Surface	Abandoned	MSHA
Terex/pegson Crusher	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Toothakers Cove Quarry	Granite	Surface	Past Producer	MRDS
Tremont Prospect		Underground	Unknown	MRDS
Trio Mine	Copper		Past Producer	MRDS
Trio Mine		Underground	Prospect	MRDS
Twin Lead Mine		Underground	Unknown	MRDS
Twin Lead Mine	Tin, Nickel, Silver, Copper, Arsenic		Past Producer	MRDS
Unnamed Mine	Gold		Occurrence	MRDS
Unnamed Mine	Copper		Prospect	MRDS
Unnamed Mine	Copper		Prospect	MRDS
Unnamed Mine	Silver		Prospect	MRDS
Unnamed Mine	Gold		Occurrence	MRDS
Unnamed Mine	Gold		Occurrence	MRDS
Unnamed Mine	Silver		Prospect	MRDS
Unnamed Mine	Silver		Prospect	MRDS
Unnamed Mine	Silver, Copper		Prospect	MRDS
Unnamed Mine	Gold		Occurrence	MRDS
Unnamed Prospect	Silver		Occurrence	MRDS
Unnamed Prospect	Lead		Occurrence	MRDS
Unnamed Prospect	Iron, Gold		Occurrence	MRDS
Unnamed Prospect	Iron, Manganese		Occurrence	MRDS
Unnamed Prospect	Copper		Occurrence	MRDS
Unnamed Quarry	Granite	Surface	Past Producer	MRDS
Unnamed Quarry	Granite	Surface	Past Producer	MRDS
Unnamed Quarry	Granite	Surface	Past Producer	MRDS
Verde Antique Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Victor Mine	Lead, Silver		Prospect	MRDS
Victor Mine	Lead	Underground	Prospect	MRDS
Victoria Mine	Silver	Underground	Prospect	MRDS
Victoria Mine	Copper, Gold, Silver, Lead		Past Producer	MRDS
W.b. Blaisdell Quarry	Granite	Surface	Past Producer	MRDS
W.e.tapley Prospect		Underground	Unknown	MRDS
Wardwell Portable Plt #1 S/n 052306	Construction Sand and Gravel	Surface	Abandoned	MSHA
Web Llc	Construction Sand and Gravel	Surface	Intermittent	MSHA
Webber Construction Company Quarry	Granite	Surface	Past Producer	MRDS
Weil Freddie Mine (1880)	Copper		Past Producer	MRDS
Weilfreddie Mine		Underground	Unknown	MRDS
Wendell Grindle	Sand and Gravel, Construction		Past Producer	MRDS
Wescott Quarry	Granite	Surface	Past Producer	MRDS
West Bay Mine	Lead	Underground	Past Producer	MRDS
West Bay Mine	Lead, Silver		Past Producer	MRDS
West and Soule Mine		Underground	Unknown	MRDS
West and Soule Mine	Lead, Copper, Zinc		Past Producer	MRDS
Western Union Prospect		Underground	Unknown	MRDS
Whales Back Quarry	Dimension Granite	Surface	Intermittent	MSHA
White Quarry	Granite	Surface	Past Producer	MRDS
White Star Mine		Underground	Unknown	MRDS
White Star Silver and Copper Mine (1880)	Gold, Silver, Copper		Past Producer	MRDS
Worster Quarry	Granite	Surface	Past Producer	MRDS
Young Hecla		Underground	Unknown	MRDS
Young Hecla	Silver, Lead, Copper		Past Producer	MRDS
Zerrien Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Cr237 1987 Read Screen	Construction Sand and Gravel	Surface	Intermittent	MSHA