Mines in Contra Costa County, California

Contra Costa County, California has 235 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 45 of these are currently active mining operations. The most commonly recorded commodity is stone, with 47 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Contra Costa County

Mine	Commodity	Type	Status	Source
Clayton Aggregates	Crushed, Broken Stone NEC	Surface	Active	MSHA
Clayton Plant	Crushed, Broken Stone NEC	Surface	Active	MSHA
G3 Enterprises Byron Plant	Construction Sand and Gravel	Surface	Active	MSHA
Kellog Creek Aggregates Inc	Construction Sand and Gravel	Surface	Active	MSHA
Sand Merchant	Sand, Common	Surface	Active	MSHA
Alves Pit	Clay	Surface	Producer	MRDS
Antioch	Silica		Producer	MRDS
Antioch Paving Co.	Stone, Crushed/Broken		Producer	MRDS
Antioch Sand Company	Sand and Gravel, Construction		Producer	MRDS
Blake Brothers Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Byron Pit	Silica	Surface	Producer	MRDS
Byron Plant	Silica		Producer	MRDS
Calif. Peat Co.	Peat		Producer	MRDS
Calif. Peat Co.	Peat		Producer	MRDS
Calif. Peat Co.	Peat		Producer	MRDS
Calif. Peat Co.	Peat		Producer	MRDS
Clayton Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Clayton Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Cowell Silver Sand Co., Laws	Silica		Producer	MRDS
Gallagher & Burke	Stone, Crushed/Broken	Surface	Producer	MRDS
Harrison-Birdwell - Pacific Cement and Aggregates Co.	Stone		Producer	MRDS
Henry J. Kaiser Company	Sand and Gravel, Construction		Producer	MRDS
La Felis Claim	Gold, Silver		Producer	MRDS
Main Mine & Mill	Stone, Crushed/Broken	Surface	Producer	MRDS
Morris Sand Pit 1,2 and 3	Sand and Gravel, Construction	Surface	Producer	MRDS
Oakley Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Pacif Cement and Aggregrates	Stone	Surface	Producer	MRDS
Pittsburg Sand Company	Silica		Producer	MRDS
Port Costa Shale Quarrys	Stone, Crushed/Broken	Surface	Producer	MRDS
Quarry Products Inc	Stone		Producer	MRDS
Quarry Products Inc	Stone	Surface	Producer	MRDS
Red Rock	Manganese		Producer	MRDS
Red Rock	Manganese		Producer	MRDS
Richmond Avenue Quarry	Stone	Surface	Producer	MRDS
Richmond Mill	Limestone, General	Processing Plant	Producer	MRDS
Ridgemoor Sand Plant	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
Roberts Sand Company Black Diamond	Silica		Producer	MRDS
Sand Hill Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Scott Pit	Stone	Surface	Producer	MRDS
Silico Pit	Silica	Surface	Producer	MRDS
Silver Mine	Silver		Producer	MRDS
Stoner Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Turtle Rock Quarry	Stone, Dimension		Producer	MRDS
United Materials and Richmond Pressed Brick Co.	Clay		Producer	MRDS
Unnamed Location	Calcium		Producer	MRDS
1b Du Pont B Plant Ti	Titanium, Pigment	Processing Plant	Plant	MRDS
Alvarnez	Pumice		Occurrence	MRDS
Alvarnez	Pumice	Surface	Past Producer	MRDS
Alves	Stone, Crushed/Broken		Occurrence	MRDS
Alves	Stone, Crushed/Broken		Occurrence	MRDS
Antioch	Silica	Surface	Past Producer	MRDS
Antioch Sand Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Antioch-Marchio	Silica	Surface	Prospect	MRDS
Arroyo Del Carro Prospect	Asbestos	Surface	Prospect	MRDS
Arroyo Del Cerro Prospects	Asbestos		Occurrence	MRDS
Bailey Ranch Pumice Deposit	Pumice		Occurrence	MRDS
Bailey Ranch Pumice Deposit	Pumice	Surface	Past Producer	MRDS
Ball	Stone, Crushed/Broken		Occurrence	MRDS
Ball	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Basalt Rock Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Basalt Rock Company	Sand and Gravel, Construction		Occurrence	MRDS
Black Point			Occurrence	MRDS
Black Point Adit	Copper	Surface	Past Producer	MRDS
Blake Brothers San Pablo	Stone, Sand and Gravel, Construction		Occurrence	MRDS
Brooks Island	Stone	Surface	Past Producer	MRDS
Brooks Island Healy - Tibbitts	Stone		Occurrence	MRDS
Brssi & Land Mag Co	Copper	Surface	Prospect	MRDS
Byron Hot Springs	Geothermal	Well	Occurrence	MRDS
Christen	Stone		Occurrence	MRDS
Christen	Stone	Surface	Prospect	MRDS
Clark & Sons	Clay		Prospect	MRDS
Contra Costa Company	Sand and Gravel, Construction		Occurrence	MRDS
Cowell	Limestone, Dimension	Surface	Unknown	MRDS
Cowell Silver	Silver		Unknown	MRDS
Diablo	Stone, Crushed/Broken		Occurrence	MRDS
Diablo	Stone, Crushed/Broken	Surface	Prospect	MRDS
Eagle Peak			Occurrence	MRDS
Eagle Peak	Gold		Unknown	MRDS
El Cerrito	Stone	Surface	Past Producer	MRDS
El Cerrito Stege, Hutchinson	Stone		Occurrence	MRDS
Gallagher and Burke	Stone, Crushed/Broken		Occurrence	MRDS
Gambetta	Peat		Occurrence	MRDS
H. J. Kaiser	Stone, Crushed/Broken		Occurrence	MRDS
Harkinson Lime Deposit	Calcium		Prospect	MRDS
Henry Cowell Lime & Cement Co.	Calcium	Surface	Past Producer	MRDS
Henry J. Kaiser	Stone		Unknown	MRDS
Henry J. Kaiser Co.	Stone	Surface	Past Producer	MRDS
Henry J. Kaiser Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Henry J. Kaiser Co.	Stone	Surface	Past Producer	MRDS
Henry J. Kaiser Company	Stone		Occurrence	MRDS
Holland Sandstone Brick Co.	Sand and Gravel, Construction		Occurrence	MRDS
Holland Sandstone Brick Co.	Mercury	Surface	Past Producer	MRDS
Immel	Stone, Crushed/Broken		Occurrence	MRDS
Immel	Stone, Crushed/Broken	Surface	Past Producer	MRDS
La Felis Claim	Gold	Surface	Past Producer	MRDS
La Feliz Claim	Gold, Silver		Occurrence	MRDS
Longwell Ranch	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Longwell Ranch Central, North and South Pits	Sand and Gravel, Construction		Occurrence	MRDS
Marchio Sand Co.	Sand and Gravel, Construction		Occurrence	MRDS
Marchio Sand Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Marchio Sand Company Antioch-Marchio	Silica		Occurrence	MRDS
Marina Vista Plant	Construction Sand and Gravel	Surface	Abandoned	MSHA
Martin	Stone, Crushed/Broken		Occurrence	MRDS
Martin	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Martinez	Stone, Dimension		Occurrence	MRDS
Martinez	Stone	Surface	Past Producer	MRDS
McNears	Stone, Dimension		Occurrence	MRDS
McNears	Stone	Surface	Past Producer	MRDS
Mitchell Canyon			Occurrence	MRDS
Mitchell Canyon Prospect	Copper	Surface	Prospect	MRDS
Mount Diablo Mine	Mercury		Past Producer	MRDS
Mount Zion	Copper		Past Producer	MRDS
Mount Zion Chrome	Chromium		Occurrence	MRDS
Mount Zion Copper Company	Copper		Occurrence	MRDS
Mount. Diablo Mine	Mercury	Surface	Past Producer	MRDS
Mount. Zion Chrome	Chromium	Surface	Prospect	MRDS
Mount. Zion Copper Co. Mine	Copper	Surface	Past Producer	MRDS
Mt. Diablo Lime Marl Co.	Limestone, General		Occurrence	MRDS
Mt. Diablo Lime Marl Co.	Calcium	Surface	Past Producer	MRDS
Mt. Diablo Rock & Asphalt Co.	Stone, Crushed/Broken	Surface	Prospect	MRDS
Mt. Diablo Rock and Asphalt Co.	Stone, Crushed/Broken		Occurrence	MRDS
N. M. Ball Sons	Stone		Occurrence	MRDS
N. M. Ball Sons	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Oakland, Antioch & Eastern Rr Co.	Stone, Crushed/Broken		Occurrence	MRDS
Oakland, Antioch & Eastern Rr. Co.	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Old Stege	Stone	Surface	Past Producer	MRDS
Old Stege Bates, Boreland & Ayer. Central Const. Co., Bruce	Stone		Occurrence	MRDS
Pacific Cement & Aggregates Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Parkins Canyon Prospect	Asbestos		Prospect	MRDS
Perkins Canyon Prospect	Asbestos		Occurrence	MRDS
Perkins Canyon Prospect	Mercury		Prospect	MRDS
Pinole	Diatomite	Surface	Prospect	MRDS
Pinole Dohrman, Pawsey	Diatomite		Occurrence	MRDS
Pittsburg Sand Co.	Silica	Surface	Past Producer	MRDS
Point Isabel	Stone		Occurrence	MRDS
Point Isable	Stone		Prospect	MRDS
Point Molate	Stone	Surface	Past Producer	MRDS
Point Molate Healey-Tibbets Co.	Stone		Occurrence	MRDS
Port Costa Clay Products Co.	Stone		Occurrence	MRDS
Prospect In Sycamore Canyon	Asbestos		Occurrence	MRDS
Prospect Near Sunshine Camp	Mercury		Occurrence	MRDS
Prospect South of Sycamore Canyon			Occurrence	MRDS
Prospects East of Russellman Sw1/4 Se1/4	Asbestos		Occurrence	MRDS
Prospects In Perkins Canyon	Mercury		Occurrence	MRDS
Prospects North	Manganese		Unknown	MRDS
Prospects North of North Peak			Occurrence	MRDS
Quarry	Stone		Occurrence	MRDS
Quarry	Stone		Unknown	MRDS
Red Rock		Surface	Prospect	MRDS
Richfield Oil Co.	Stone, Crushed/Broken	Surface	Prospect	MRDS
Richmond Point Richmond	Stone		Occurrence	MRDS
Roberts Sand Company	Silica	Surface	Past Producer	MRDS
San Francisco Bay Dredge	Limestone, General	Offshore	Prospect	MRDS
San Pedro Claim	Gold, Silver		Occurrence	MRDS
San Pedro Claim	Gold	Surface	Past Producer	MRDS
Serra Brothers	Stone	Surface	Prospect	MRDS
Serra Brothers Slater	Stone		Occurrence	MRDS
Silica Co. of Calif.	Silica, Sand and Gravel, Construction		Past Producer	MRDS
Silica Co. of California	Silica, Sand and Gravel, Construction		Past Producer	MRDS
Silica Company of Calif.	Silica, Sand and Gravel, Construction		Past Producer	MRDS
Silver Mine	Copper		Past Producer	MRDS
Silver Mine	Silver	Surface	Past Producer	MRDS
Silver Sand	Sand and Gravel, Construction	Surface	Unknown	MRDS
Stone House Ranch	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Summit of Zion	Copper		Past Producer	MRDS
Summit of Zion Mine	Copper	Surface	Past Producer	MRDS
Sycamore Canyon			Occurrence	MRDS
Sycamore Canyon	Copper		Unknown	MRDS
Txi-Port Costa Plant	Common Clays NEC	Surface	Abandoned	MSHA
Tunnel Rock	Stone, Crushed/Broken		Occurrence	MRDS
Tunnel Rock	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Turtle Rock	Stone	Surface	Past Producer	MRDS
Unity ? Claim	Silver		Occurrence	MRDS
Unknown	Silica		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Asbestos		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Stone, Crushed/Broken		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Mercury		Occurrence	MRDS
Unknown	Stone		Occurrence	MRDS
Unnamed	Stone		Occurrence	MRDS
Unnamed	Stone		Occurrence	MRDS
Unnamed	Stone		Occurrence	MRDS
Unnamed	Stone		Occurrence	MRDS
Unnamed	Stone		Occurrence	MRDS
Unnamed Location	Silica, Sand and Gravel, Construction		Past Producer	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Unnamed Location	Asbestos	Surface	Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Manganese	Surface	Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Stone		Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Silver	Surface	Prospect	MRDS
Unnamed Location	Stone		Prospect	MRDS
Unnamed Location	Calcium	Surface	Past Producer	MRDS
Unnamed Location	Silica	Surface	Past Producer	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Calcium		Prospect	MRDS
Unnamed Location	Stone		Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Stone		Prospect	MRDS
Unnamed Location	Calcium	Surface	Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Asbestos		Prospect	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Asbestos		Occurrence	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Manganese	Surface	Prospect	MRDS
Unnamed Location	Sand and Gravel, Construction		Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Asbestos		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Clay		Occurrence	MRDS
Unnamed Location	Stone		Occurrence	MRDS
Unnamed Locations	Mercury		Prospect	MRDS
Unnamed Property	Sand and Gravel, Construction		Unknown	MRDS
Unnamed Prospect	Zinc, Mercury, Copper		Past Producer	MRDS
Unnamed Prospect	Manganese		Prospect	MRDS
Unnamed Prospect	Zinc	Surface	Past Producer	MRDS
Unnamed.	Stone		Occurrence	MRDS
Untd. Mtrls. & Rchmnd.prssd.brck.co	Clay	Surface	Past Producer	MRDS
White Diamond Claim	Silver, Gold		Occurrence	MRDS
White Diamond Claim	Silver	Surface	Past Producer	MRDS
Wills	Sand and Gravel, Construction	Surface	Prospect	MRDS