Mines in Los Angeles County, California

Los Angeles County, California has 770 mine and mineral deposit locations documented in federal records from the USGS and MSHA. 89 of these are currently active mining operations. The most commonly recorded commodity is gold, with 167 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Los Angeles County

Mine	Commodity	Type	Status	Source
75th Street Quarry and Recycling	Sand, Common	Surface	Active	MSHA
Acton Clay Quarries	Clay, Ceramic, Refractory Mnls.	Surface	Active	MSHA
Azusa Rock	Crushed, Broken Stone NEC	Surface	Active	MSHA
Big Rock Creek Quarry	Sand, Industrial NEC	Surface	Active	MSHA
Coast Aggregates Big Rock Creek	Sand, Common	Surface	Active	MSHA
Durbin Plant	Construction Sand and Gravel	Surface	Active	MSHA
Holliday Rock-Little Rock Plant	Construction Sand and Gravel	Surface	Active	MSHA
Irwindale Plant	Construction Sand and Gravel	Surface	Active	MSHA
Irwindale Aggregates	Construction Sand and Gravel	Surface	Active	MSHA
Littlerock Plant	Construction Sand and Gravel	Surface	Active	MSHA
Littlerock Quarry	Construction Sand and Gravel	Surface	Active	MSHA
Palmdale Plant	Construction Sand and Gravel	Surface	Active	MSHA
Pebbly Beach Quarry	Crushed, Broken Stone NEC	Surface	Active	MSHA
Peck Road Gravel Pit	Construction Sand and Gravel	Surface	Active	MSHA
Palmdale	Construction Sand and Gravel	Surface	Active	MSHA
Reliance Plant	Construction Sand and Gravel	Surface	Active	MSHA
Sylmar Site	Sand, Common	Surface	Active	MSHA
Aacton Clay Project	Fire Clay (Refractory)	Surface	Producer	MRDS
Acton	Gold		Producer	MRDS
Allison	Gold		Producer	MRDS
Alpine	Gypsum-Anhydrite		Producer	MRDS
Antelope Valley	Gold		Producer	MRDS
Arrow Sand & Gravel, Inc	Sand and Gravel, Construction	Surface	Producer	MRDS
Azusa Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Baldora	Gold		Producer	MRDS
Big Horn	Gold, Silver, Copper, Lead		Producer	MRDS
Black Cargo	Gold		Producer	MRDS
Black Cat	Gold		Producer	MRDS
Blue Diamond Pit No. 1	Sand and Gravel, Construction	Surface	Producer	MRDS
Blue Diamond Pit No. 2	Sand and Gravel, Construction	Surface	Producer	MRDS
Bradshaw Lease	Gold		Producer	MRDS
Browns Canyon Plant	Sand and Gravel, Construction	Surface	Producer	MRDS
City of Industry Plant	Calcium	Processing Plant	Producer	MRDS
Clifton	Titanium, Metal		Producer	MRDS
Clifton-Redondo Placer	Titanium, Metal		Producer	MRDS
Curtis-Hooker Corp.	Sand and Gravel, Construction	Surface	Producer	MRDS
Davidson Brick Company	Clay	Surface	Producer	MRDS
Davis and Son	Silica		Producer	MRDS
Devils Canyon Dam	Sand and Gravel, Construction	Surface	Producer	MRDS
Dewey Group	Gold		Producer	MRDS
Eagle	Gold		Producer	MRDS
El Monte Plant	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
Empire Quarry	Limestone, Dimension	Surface	Producer	MRDS
Falcon	Gold		Producer	MRDS
Featherstone Deposit	Diatomite		Producer	MRDS
Forest Lawn Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Gold Bar	Gold		Producer	MRDS
Gold Dollar	Gold		Producer	MRDS
Gold Queen	Gold		Producer	MRDS
Governor	Gold		Producer	MRDS
Hi-Grade	Gold		Producer	MRDS
Holly	Gold		Producer	MRDS
Hurns Products	Sand and Gravel, Construction	Surface	Producer	MRDS
Irwindale Plant	Sand and Gravel, Construction	Surface	Producer	MRDS
Irwindale Plant	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
John F. Ferry Rock Products	Sand and Gravel, Construction	Surface	Producer	MRDS
Josephine	Gold		Producer	MRDS
L.a. Mill	Talc-Soapstone	Processing Plant	Producer	MRDS
La Canada Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Lambert's	Feldspar		Producer	MRDS
Loomis	Gold		Producer	MRDS
Lordsburg Deposit	Stone		Producer	MRDS
Lueck Lease	Gold		Producer	MRDS
Material Yard	Clay	Surface	Producer	MRDS
Mojave Cement Plant	Calcium	Processing Plant	Producer	MRDS
Monte Cristo	Gold		Producer	MRDS
Mt Gleason	Gold		Producer	MRDS
Native Son	Gold		Producer	MRDS
Osborn Co.	Sand and Gravel, Construction	Surface	Producer	MRDS
Palmdale Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Pigment Div of Ei Du Pont D/n & Co	Titanium, Metal		Producer	MRDS
Red Feather	Manganese		Producer	MRDS
Red Rover	Gold		Producer	MRDS
San Gabriel	Gold		Producer	MRDS
San Gabriel Canyon Area	Gold		Producer	MRDS
San Gabriel Mountains	Vanadium, Iron		Producer	MRDS
Sand and Pacoima Canyons Placer	Sand and Gravel, Construction, Iron, Titanium, Metal		Producer	MRDS
Santa Fe Springs Plant	Clay	Processing Plant	Producer	MRDS
Sierra Rock Products Co.	Sand and Gravel, Construction	Surface	Producer	MRDS
Silica Mining and Products Co	Feldspar		Producer	MRDS
Soledad Canyon	Zirconium, Titanium		Producer	MRDS
Soledad Rock Quarry	Sand and Gravel, Construction	Surface	Producer	MRDS
Unnamed Location	Quartz		Producer	MRDS
Unnamed Location	Stone		Producer	MRDS
Western San Gabriel Mountains	Titanium, Metal		Producer	MRDS
Western San Gabriel Mtns.	Titanium, Metal, Phosphorus-Phosphates, Iron		Producer	MRDS
Western San Gabriel Mtns. District	Titanium		Producer	MRDS
Western Silica Co Clayton, Muroc	Silica		Producer	MRDS
Zanteson	Gold		Producer	MRDS
(Facility) Beam Smelter Co. and Associates	Titanium		Plant	MRDS
A-1 Grit Co	Misc. Nonmetallic Mnls. NEC	Facility	Abandoned	MSHA
A. P. Schwarz	Stone		Occurrence	MRDS
Acme	Gold	Underground	Prospect	MRDS
Acme Brick Co. Pit	Clay	Surface	Past Producer	MRDS
Acton	Lead		Prospect	MRDS
Acton 1 Deposit	Titanium		Occurrence	MRDS
Acton Deposit	Chromium		Occurrence	MRDS
Acton Rock Co.	Stone, Crushed/Broken	Processing Plant	Unknown	MRDS
Alameda St. Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Alder Creek 2 Deposit	Titanium	Surface	Prospect	MRDS
Alder Creek 5 Deposit	Titanium		Occurrence	MRDS
Alexander	Gold	Underground	Prospect	MRDS
Alfredo Payola, Et Al.	Stone		Occurrence	MRDS
All For One	Gold	Placer	Past Producer	MRDS
Allen	Stone		Occurrence	MRDS
Allen and Bailey	Gold	Placer	Past Producer	MRDS
Allison Mine		Underground	Past Producer	MRDS
Alpine	Gypsum-Anhydrite	Surface	Past Producer	MRDS
Alvardo Hot Springs	Geothermal		Occurrence	MRDS
Amargosa Group		Surface-Underground	Prospect	MRDS
Amercal	Stone, Crushed/Broken	Surface	Past Producer	MRDS
American Cement Co. Quarry	Limestone, General		Past Producer	MRDS
American Graphite Co.	Graphite	Surface-Underground	Prospect	MRDS
Anderson and Sandquist	Clay	Processing Plant	Past Producer	MRDS
Andrew	Tungsten Ore	Surface	Abandoned	MSHA
Andrew Tungsten Mine	Tungsten	Underground	Past Producer	MRDS
Angulo Tile Co.	Clay	Processing Plant	Past Producer	MRDS
Antelope Valley Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Antelope Valley Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Ap Group and Apb Group	Clay	Surface	Prospect	MRDS
Apex	Mica		Occurrence	MRDS
Apex	Mica		Prospect	MRDS
Arrow Point Deposit	Talc-Soapstone	Surface	Past Producer	MRDS
Arrow Rock Co Duarte Plant	Sand and Gravel, Construction		Past Producer	MRDS
Arrow Rock Co.-Sun Valley Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Arrow Rock Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Asphalt Products Co	Titanium	Processing Plant	Past Producer	MRDS
Atkinson Pit	Clay	Surface	Past Producer	MRDS
Atlas Sewer Pipe Co	Clay		Prospect	MRDS
Atlas Sewer Pipe Co. Pit	Clay	Surface	Past Producer	MRDS
Azusa Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Azusa Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Azusa Quarry	Sand, Common	Surface	Abandoned	MSHA
Azusa Quarry	Construction Sand and Gravel	Surface	Abandoned	MSHA
Azusa Rock and Sand Co Woods	Sand and Gravel, Construction		Past Producer	MRDS
Azusa Rock and Sand Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Baker and Austin Placer	Gold	Placer	Occurrence	MRDS
Baldora Mine		Underground	Past Producer	MRDS
Baldwin	Gold	Underground	Prospect	MRDS
Baldwin Park Pit and Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Baldwin Park Plant	Sand and Gravel, Construction		Past Producer	MRDS
Banning Quarry	Diatomite	Surface	Past Producer	MRDS
Banning Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Baughman Deposit	Limestone, General	Surface	Prospect	MRDS
Baughman Dolomite	Limestone, General		Occurrence	MRDS
Bear Canyon Placer Mine	Gold	Placer	Unknown	MRDS
Beyrle	Sand and Gravel, Construction		Past Producer	MRDS
Big Chief	Gold	Underground	Past Producer	MRDS
Big Horn Mine	Gold	Underground	Past Producer	MRDS
Big Horn Mine	Gold	Underground	Past Producer	MRDS
Big Pine	Limestone, General	Surface	Prospect	MRDS
Big Rock Creek	Construction Sand and Gravel	Surface	Abandoned	MSHA
Big Rock Creek Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Big Tujunga Canyon Deposit	Graphite		Occurrence	MRDS
Big Tujunga Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Black Brothers			Occurrence	MRDS
Black Cargo Mine	Gold	Underground	Past Producer	MRDS
Black Cat	Gold	Underground	Past Producer	MRDS
Black Crow Mine	Titanium	Surface	Occurrence	MRDS
Black Diamond	Graphite	Surface	Past Producer	MRDS
Black Hawk Group	Gold	Underground	Prospect	MRDS
Black Jack	Lead		Past Producer	MRDS
Black Jack	Lead	Underground	Past Producer	MRDS
Black Lode	Graphite		Occurrence	MRDS
Black Widow Claim	Stone		Occurrence	MRDS
Blue Cloud Chinchilla Dust	Pumice, Volcanic Materials		Past Producer	MRDS
Blue Cloud Chinchilla Dust	Pumice	Surface	Past Producer	MRDS
Blue Diamond - Peck Rd Pit	Sand and Gravel, Construction		Prospect	MRDS
Blue Diamond - Pierson	Sand and Gravel, Construction		Prospect	MRDS
Blue Diamond Corp	Sand and Gravel, Construction		Past Producer	MRDS
Blue Diamond Corp. - Alameda Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Blue Diamond Corp. - Peck Road Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Blue Diamond Corp. - Pierson Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Blue Diamond Corp. - Roscoe Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Blue Goose	Stone, Dimension	Surface	Past Producer	MRDS
Blue Goose	Gold		Prospect	MRDS
Blue Jay Nos. 1 and 2	Gold	Underground	Prospect	MRDS
Boatwright Prospect	Molybdenum	Underground	Prospect	MRDS
Borges Rock	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Boulevard Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Boulevard Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Bouquet Canyon Deposit	Chromium		Occurrence	MRDS
Bouquet Canyon Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Bouquet Canyon Talc	Talc-Soapstone	Underground	Prospect	MRDS
Bradshaw Lease	Gold	Underground	Past Producer	MRDS
Breslin Greenstone Quarry	Sand and Gravel, Construction		Past Producer	MRDS
Breslin Greenstone Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Brite Lease	Gold	Underground	Past Producer	MRDS
Brush Canyon Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Bryant Group	Titanium		Occurrence	MRDS
Buel and Ford Placer	Gold	Placer	Occurrence	MRDS
Buena Esperanza	Gold	Underground	Prospect	MRDS
Builders Brick Co.	Clay	Surface	Past Producer	MRDS
Burdick Minerals Corp.	Titanium	Surface	Past Producer	MRDS
C A Rasmussen Inc Crusher Units	Construction Sand and Gravel	Surface	Abandoned	MSHA
Cahuenga	Gold	Underground	Prospect	MRDS
Cal Mat Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
California Graphite Co.	Graphite	Surface	Past Producer	MRDS
California Materials Co. Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
California Portland Cement Company	Limestone, General	Processing Plant	Past Producer	MRDS
Caliproducts	Feldspar	Surface-Underground	Past Producer	MRDS
Campbell-Dunkes Group	Gold	Surface	Prospect	MRDS
Casa Grande	Gold	Underground	Prospect	MRDS
Castaic Quarry	Clay	Surface	Past Producer	MRDS
Castaic Valley Placers	Gold	Placer	Unknown	MRDS
Caswell & Co.	Silica	Surface	Past Producer	MRDS
Century Sand and Gravel	Gold	Surface	Past Producer	MRDS
Chandlers Palos Verdes S&g Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Charlie Canyon Deposit	Gypsum-Anhydrite	Underground	Past Producer	MRDS
Charlton Quarry	Flagstone	Surface	Past Producer	MRDS
Chatsworth Park Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Chicago-Pacific	Feldspar		Past Producer	MRDS
Chicago-Pacific	Feldspar		Prospect	MRDS
Chicken Finlay Placer	Gold	Placer	Prospect	MRDS
Chilao Gold Prospect	Gold	Underground	Prospect	MRDS
City Brick Co. Pit	Clay	Surface	Past Producer	MRDS
City Rock Co. Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
City Rock Company Pit.	Sand and Gravel, Construction, Stone, Crushed/Broken		Past Producer	MRDS
City of Los Angeles	Sand and Gravel, Construction	Processing Plant	Past Producer	MRDS
Claremont Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Clearwater	Copper	Surface-Underground	Prospect	MRDS
Clearwater Group			Occurrence	MRDS
Clement Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Coast Brick Co.	Clay	Surface	Past Producer	MRDS
Cogswell	Molybdenum, Rhenium		Occurrence	MRDS
Cogswell			Occurrence	MRDS
Cogswell	Molybdenum		Unknown	MRDS
Coldwater Canyon Prospect	Gold	Placer	Occurrence	MRDS
Cole	Molybdenum		Occurrence	MRDS
Cole			Occurrence	MRDS
Cole	Molybdenum		Unknown	MRDS
Collecting Site	Semiprecious Gemstone, Quartz		Past Producer	MRDS
Collector's Locality	Semiprecious Gemstone		Occurrence	MRDS
Commack Talc Deposit	Talc-Soapstone		Unknown	MRDS
Concrete Materials Co. Pit/plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Condor	Titanium	Surface	Prospect	MRDS
Consolidated Rock Products Co	Sand and Gravel, Construction		Past Producer	MRDS
Consolidated Rock Products Co	Sand and Gravel, Construction		Prospect	MRDS
Consolidated Rock Products Co. Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Cooperative Building Materials Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Cornet	Gold	Underground	Prospect	MRDS
Crail & Zanteson	Gold	Underground	Prospect	MRDS
Crystalaire	Copper	Surface	Prospect	MRDS
Dabney Talc	Talc-Soapstone	Surface	Prospect	MRDS
Daisy, Et Al.	Lead		Occurrence	MRDS
Davis and Son Mine	Silica	Surface	Past Producer	MRDS
Dawn	Gold	Underground	Past Producer	MRDS
Daytonian	Titanium		Occurrence	MRDS
Deem	Stone, Dimension	Surface	Past Producer	MRDS
Del Sur Ridge Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Del Sur Ridge Quarry	Dimension Stone NEC	Surface	Abandoned	MSHA
Denver Group			Occurrence	MRDS
Desert Stone Quarry No. 1	Stone, Dimension	Surface	Past Producer	MRDS
Devil S Gate	Sand and Gravel, Construction		Past Producer	MRDS
Dewey Group	Gold	Underground	Past Producer	MRDS
Diatomaceous Earth Deposit	Diatomite		Occurrence	MRDS
Diatomaceous Earth Quarry	Diatomite	Surface	Past Producer	MRDS
Dicalite	Diatomite		Occurrence	MRDS
Dime Canyon Prospect	Gold	Placer	Occurrence	MRDS
Donaldson Prospect	Silver		Prospect	MRDS
Dorothy Ann	Mica		Occurrence	MRDS
Dorothy Ann	Mica	Surface	Past Producer	MRDS
Dotson Scheelite Location	Tungsten		Occurrence	MRDS
Double Eagle	Gold	Underground	Prospect	MRDS
Dry Canyon Lease	Gold	Placer	Past Producer	MRDS
Du Pont	Titanium		Occurrence	MRDS
Du Pont	Titanium		Occurrence	MRDS
Duarte Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Duncan Deposit	Feldspar	Surface	Past Producer	MRDS
Durbin Plant	Sand and Gravel, Construction		Past Producer	MRDS
Durbin Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Eagle	Gold	Underground	Prospect	MRDS
Eagle Mine		Underground	Past Producer	MRDS
Edward Sidebotham and Sons, Inc.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
El Centro Mine	Gold	Underground	Prospect	MRDS
El Segando	Gold	Placer	Past Producer	MRDS
Elizabeth Placer, M C	Gold	Placer	Unknown	MRDS
Elysian Park Plant	Clay	Processing Plant	Past Producer	MRDS
Emma Group	Copper, Silver		Past Producer	MRDS
Emma Group	Copper	Underground	Past Producer	MRDS
Emmed Placer, Et Al.	Gold	Placer	Unknown	MRDS
Empire Landing Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Empire Placer	Gold	Placer	Occurrence	MRDS
Empire Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Empire Quarry	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
Enterprise Aggregate Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Eureka	Aluminum	Surface	Past Producer	MRDS
Eva Canyon	Graphite		Occurrence	MRDS
Evert Deposit	Chromium		Occurrence	MRDS
Falcon Mine	Gold	Underground	Past Producer	MRDS
Fascination Spring	Gold		Occurrence	MRDS
Featherstone Deposit	Diatomite	Surface	Past Producer	MRDS
Felix	Fluorine-Fluorite		Prospect	MRDS
Fenner Canyon Prospect	Tungsten		Occurrence	MRDS
Ferguson Placer	Gold	Placer	Occurrence	MRDS
Ferro-Titan	Titanium	Surface	Past Producer	MRDS
Fiber Queen	Asbestos		Past Producer	MRDS
Fiber Queen	Asbestos	Underground	Past Producer	MRDS
Fire Pulp Plaster Co.	Gypsum-Anhydrite	Surface	Past Producer	MRDS
Fish Canyon Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Ford & Young Lease	Gold	Placer	Past Producer	MRDS
Fox	Gold	Placer	Prospect	MRDS
Free Cuba	Copper		Past Producer	MRDS
Free Cuba	Copper	Underground	Prospect	MRDS
G. C. K. Placers	Gold	Placer	Past Producer	MRDS
Gates Chemical Co.	Feldspar	Surface	Past Producer	MRDS
Gates Chemical Company	Feldspar		Past Producer	MRDS
Geo. Shaffner	Stone		Occurrence	MRDS
Gilbert	Stone, Dimension	Surface	Past Producer	MRDS
Gillette	Gold	Underground	Past Producer	MRDS
Gilman Deposit	Graphite		Occurrence	MRDS
Gladding McBean & Co. - Pico Pit	Clay	Surface	Past Producer	MRDS
Gladding McBean - Pico Pit	Clay		Prospect	MRDS
Gladding-McBean-Santa Monica Pit	Clay	Surface	Past Producer	MRDS
Gladwin and Peet Claim			Occurrence	MRDS
Gladwin and Peet Claim		Surface	Prospect	MRDS
Gladys	Gold	Surface-Underground	Prospect	MRDS
Glen-Marie Placer	Gold	Placer	Past Producer	MRDS
Gold Bar Mine	Gold	Underground	Past Producer	MRDS
Gold Discovery Site, 1842	Gold	Placer	Prospect	MRDS
Gold Dollar Mine	Gold	Underground	Past Producer	MRDS
Gold Queen Mine	Gold	Underground	Past Producer	MRDS
Golden Rock	Stone, Dimension	Surface	Past Producer	MRDS
Goodan	Limestone, General		Past Producer	MRDS
Goodan Deposit	Limestone, General	Surface	Past Producer	MRDS
Gordon Feldspar	Feldspar		Past Producer	MRDS
Gordon Feldspar	Feldspar	Surface	Past Producer	MRDS
Gordon Transfer & Trucking Co.	Silica	Surface	Past Producer	MRDS
Gordon-Garrison-Russell	Sand and Gravel, Construction	Processing Plant	Past Producer	MRDS
Governor Mine	Gold	Underground	Occurrence	MRDS
Governor Mine	Silver, Gold	Surface-Underground	Past Producer	MRDS
Graham Bros - El Monte Plant	Sand and Gravel, Construction		Past Producer	MRDS
Graham Bros.-El Monte Pit and Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Graham Bros.-Lomita Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Graham Bros.-Roscoe Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Granite Materials Co. - Wick St.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Granite Materials Co.-Tujunga Ave.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Grassy Canyon			Occurrence	MRDS
Grassy Canyon	Molybdenum		Unknown	MRDS
Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Great West	Silver	Underground	Prospect	MRDS
Gross Talc Mine	Talc-Soapstone		Prospect	MRDS
Hacienda Heights	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Haines Canyon	Stone, Crushed/Broken	Processing Plant	Past Producer	MRDS
Hansen Dam Quarry	Granite, Stone		Past Producer	MRDS
Hansen Dam Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Happy Day Placer	Gold	Placer	Past Producer	MRDS
Harvey	Sand and Gravel, Construction		Prospect	MRDS
Harvey	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Haskins Deposit	Dolomite	Surface	Past Producer	MRDS
Haskins Dolomite	Limestone, General		Past Producer	MRDS
Heaton	Gold	Placer	Past Producer	MRDS
Helene Mine	Gold	Underground	Prospect	MRDS
Helman	Graphite		Occurrence	MRDS
Herman Gurley - Permittee	Stone		Occurrence	MRDS
Hewitt Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Hi-Grade Mine	Gold	Underground	Past Producer	MRDS
Higgins Brick & Tile Co.-Gardena	Clay	Surface	Past Producer	MRDS
Higgins Brick and Tile Co	Clay		Prospect	MRDS
Hilltop	Gold	Underground	Prospect	MRDS
Hilltop Lime	Limestone, General		Past Producer	MRDS
Hilltop Lime	Limestone, General	Surface	Unknown	MRDS
Hilltop Quarry	Limestone, General	Surface	Past Producer	MRDS
Hoffman	Stone, Dimension	Surface	Past Producer	MRDS
Holly	Gold	Placer	Past Producer	MRDS
Home Supply	Gold	Placer	Past Producer	MRDS
Home Teaming and Transfer Co.	Sand and Gravel, Construction	Processing Plant	Past Producer	MRDS
Horse Shoe Consolidated Placer	Gold	Placer	Past Producer	MRDS
Independent American Mining Co.	Mica		Past Producer	MRDS
Independent American Mining Co.	Mica		Past Producer	MRDS
Independent Brick Co. Pit and Plant	Clay	Surface	Past Producer	MRDS
Iron Blossom Group	Titanium	Underground	Past Producer	MRDS
Iron Mack	Titanium	Surface	Past Producer	MRDS
Iron Mountain	Titanium		Occurrence	MRDS
Irwindale Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Irwindale Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Irwindale Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
J. A. Houlihan Property	Sand and Gravel, Construction	Surface	Prospect	MRDS
J. Jensen	Clay	Surface	Unknown	MRDS
Jamestown No. 2	Graphite		Occurrence	MRDS
John F Ferry Rock Products	Sand and Gravel, Construction		Past Producer	MRDS
Josephine	Gold	Underground	Past Producer	MRDS
Joslin	Silica	Underground	Prospect	MRDS
Jumbo-Channel Placer	Gold	Placer	Past Producer	MRDS
Justice Placers	Gold	Placer	Occurrence	MRDS
K & K	Clay	Surface	Past Producer	MRDS
Kaolin and Manzanita	Gold		Unknown	MRDS
Katz	Stone, Crushed/Broken		Past Producer	MRDS
Katz Diatomaceous Shale	Diatomite	Surface	Prospect	MRDS
Katz Soapstone		Surface	Prospect	MRDS
Kelly Bros.	Gold	Underground	Prospect	MRDS
Kelsey	Gold, Silver		Past Producer	MRDS
Kelsey, Et Al.	Gold	Underground	Past Producer	MRDS
Kincaid Plant	Sand and Gravel, Construction		Prospect	MRDS
Kincaid Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
King of the West			Occurrence	MRDS
King of the West	Copper	Underground	Prospect	MRDS
L. A. Decomposed Granite Co.	Stone, Crushed/Broken	Surface	Past Producer	MRDS
La Decomposed Granite Co	Sand and Gravel, Construction		Prospect	MRDS
Lambert's Poultry Grits	Feldspar	Surface	Past Producer	MRDS
Lang	Boron-Borates		Past Producer	MRDS
Lang 2 Deposit	Titanium		Occurrence	MRDS
Lang 4 Deposit	Titanium		Occurrence	MRDS
Lang Mine	Boron-Borates	Underground	Past Producer	MRDS
Lang Quarry	Stone, Dimension	Surface	Past Producer	MRDS
Lang Station	Construction Sand and Gravel	Surface	Abandoned	MSHA
Lang Station Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Lang Station Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Lap Wing, Et Al.	Gold	Underground	Past Producer	MRDS
Largo Sand and Gravel	Gold, Sand and Gravel, Construction		Prospect	MRDS
Largo Sand and Gravel Plant	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Largo Vista Nos. 1-8	Limestone, General		Past Producer	MRDS
Last Chance	Lead	Surface	Prospect	MRDS
Lawrence I. Liston Co.-Madrona Ave	Silica	Surface	Past Producer	MRDS
Lenard D. Rymer	Stone, Dimension	Surface	Unknown	MRDS
Lincoln Service Corp.	Stone, Crushed/Broken		Occurrence	MRDS
Lindauer Corp	Sand and Gravel, Construction		Past Producer	MRDS
Lindauer Deposit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Linderman and Decker Co.	Clay	Surface	Past Producer	MRDS
Little Nugget Placers	Gold	Placer	Past Producer	MRDS
Little Tujunga 10 Deposit	Titanium		Occurrence	MRDS
Little Tujunga 11 Deposit	Titanium	Placer	Occurrence	MRDS
Little Tujunga 4 Deposit	Titanium		Occurrence	MRDS
Little Tujunga 5 Deposit	Titanium	Surface	Occurrence	MRDS
Little Tujunga 6 Deposit	Titanium		Occurrence	MRDS
Little Tujunga 7 Deposit	Titanium		Occurrence	MRDS
Little Tujunga 8 Deposit	Titanium		Occurrence	MRDS
Little Tujunga 9 Deposit	Titanium		Occurrence	MRDS
Little Tujunga Quad Occurrences	Chromium		Occurrence	MRDS
Littlerock	Construction Sand and Gravel	Surface	Abandoned	MSHA
Littlerock Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Littlerock Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Littlerock Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Littlerock Wash Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Littlerock Wash Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Live Oak	Titanium	Placer	Past Producer	MRDS
Livingston Rock & Gravel Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Livingston Rock & Gravel Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Livingston Rock and Gravel	Sand and Gravel, Construction		Past Producer	MRDS
Livingston Rock and Gravel Co, Inc	Sand and Gravel, Construction		Prospect	MRDS
Livingston Rock and Gravel Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Livingston-Graham Sun Valley Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Lodestone Mine	Titanium		Occurrence	MRDS
Lone Cabin	Gold	Placer	Past Producer	MRDS
Long Beach Brick Co	Clay		Past Producer	MRDS
Long Beach Brick Co.	Clay	Surface	Past Producer	MRDS
Lookout Lode Claim		Surface	Prospect	MRDS
Loomis	Gold	Underground	Prospect	MRDS
Lordsburg Deposit	Stone, Dimension	Surface	Past Producer	MRDS
Loris	Gold		Occurrence	MRDS
Los Angeles Brick Co-Mission Rd. Yd	Clay	Processing Plant	Past Producer	MRDS
Los Angeles Brick Co. Pit	Clay	Surface	Past Producer	MRDS
Los Angeles Brick Co.-7th St. Yard	Clay	Surface	Past Producer	MRDS
Los Angeles City Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Los Angeles Park Dept. Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Los Angeles Pottery Co.	Clay	Processing Plant	Past Producer	MRDS
Los Angeles Rock and Gravel Co.	Sand and Gravel, Construction	Processing Plant	Past Producer	MRDS
Los Angeles Silica Corp.	Silica		Occurrence	MRDS
Lost Canyon	Gold	Placer	Prospect	MRDS
Lost Treasure	Silver	Surface-Underground	Prospect	MRDS
Lovell Group	Gold	Underground	Prospect	MRDS
Lovell-North Group	Gold	Surface	Unknown	MRDS
Lowman Claims			Occurrence	MRDS
Lucky Chase	Graphite		Occurrence	MRDS
Lueck Lease	Gold	Underground	Past Producer	MRDS
Lynn Brick Co.	Clay	Processing Plant	Past Producer	MRDS
Lynx Gulch-Big Tujunga Canyon Area	Titanium		Occurrence	MRDS
Macarthur & Son	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Macarthur and Son	Sand and Gravel, Construction		Past Producer	MRDS
Magic Mountain Group	Titanium		Occurrence	MRDS
Malibu Potteries	Clay	Surface	Past Producer	MRDS
Mallery #2	Gold		Prospect	MRDS
Mammoth			Occurrence	MRDS
Mammoth	Gold		Prospect	MRDS
Manning Bros Rock & Sand Co. Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Manning Bros Rock and Sand Co	Sand and Gravel, Construction		Past Producer	MRDS
Manzanita	Molybdenum		Occurrence	MRDS
Marion Lode Gold Prospect	Gold		Unknown	MRDS
Marris Quartz	Copper		Occurrence	MRDS
Mason & Allen	Titanium		Occurrence	MRDS
Material Dealers Dist. Co. Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Matt H. Colville	Stone		Occurrence	MRDS
McCaslin Materials Co	Sand and Gravel, Construction		Past Producer	MRDS
McCaslin Materials Co. Pit	Stone, Crushed/Broken	Surface	Past Producer	MRDS
McIlroy Blasting Sand Co.	Silica	Surface	Past Producer	MRDS
Mica 1	Mica		Occurrence	MRDS
Mica I	Mica		Occurrence	MRDS
Mill City Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Miller Bros. Truck Co.- Vollmer Pit	Silica	Surface	Past Producer	MRDS
Miller Bros. Truck Co.-Hawthorne	Silica	Surface	Past Producer	MRDS
Mint Canyon	Gypsum-Anhydrite		Past Producer	MRDS
Mint Canyon Deposit	Gypsum-Anhydrite		Prospect	MRDS
Mission Brick Co. Pit	Clay	Surface	Past Producer	MRDS
Mitchell Quarry	Stone, Crushed/Broken, Granite		Past Producer	MRDS
Mitchell Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Monte Cristo	Molybdenum		Occurrence	MRDS
Monte Cristo			Occurrence	MRDS
Monte Cristo Mine	Gold	Underground	Prospect	MRDS