Mines in Santa Clara County, California

Santa Clara County, California has 383 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 mercury, with 74 sites. The table below lists all recorded mines in the county with links to individual site details.

All Mines in Santa Clara County

Mine	Commodity	Type	Status	Source
Lexington Quarry	Crushed, Broken Stone NEC	Surface	Active	MSHA
Stevens Creek Quarry	Crushed, Broken Stone NEC	Surface	Active	MSHA
Adobe Creek Quarry	Stone, Crushed/Broken		Producer	MRDS
Ala Mountain Mine	Manganese		Producer	MRDS
Azevado Quarry	Stone, Dimension	Surface	Producer	MRDS
Bahr & Ledoyen, Inc.	Stone		Producer	MRDS
Bay Evaporators	Salt	Brine Operation	Producer	MRDS
Bernal	Calcium		Producer	MRDS
Billy Goat Prospect	Manganese		Producer	MRDS
Black Eagle	Manganese		Producer	MRDS
Black Horse	Manganese		Producer	MRDS
Blenda	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
Borrow Pit	Stone		Producer	MRDS
Bradford Ranch	Magnesite		Producer	MRDS
Calaveras Quarry	Stone	Surface	Producer	MRDS
Commercial Materials	Stone, Crushed/Broken		Producer	MRDS
Comstock	Mercury		Producer	MRDS
Cottonwood	Manganese		Producer	MRDS
Crystal Ball Mining Co.	Mercury		Producer	MRDS
Curtner Quarry	Stone	Surface	Producer	MRDS
Doak #2	Manganese		Producer	MRDS
Douglas Ranch	Calcium		Producer	MRDS
Enriquita Mine	Mercury		Producer	MRDS
Fidelity Deposit	Magnesite		Producer	MRDS
Fredrickson-Wetson	Stone		Producer	MRDS
Greenwalls Property	Chromium		Producer	MRDS
Guadalupe Lime Co.	Calcium		Producer	MRDS
Hahn Ranch Deposits	Chromium		Producer	MRDS
Hillsdale	Mercury		Producer	MRDS
Howson Mill	Sand and Gravel, Construction	Processing Plant	Producer	MRDS
Jones Group	Manganese		Producer	MRDS
Keller	Manganese		Producer	MRDS
Kilday Ranch Deposits	Chromium		Producer	MRDS
Lexington Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Lone Hill	Stone		Producer	MRDS
Mateos Ranch	Manganese		Producer	MRDS
Mc Pherson Prospect	Manganese		Producer	MRDS
McCoy	Manganese		Producer	MRDS
Miller	Manganese		Producer	MRDS
Morgan Hill Prospect	Manganese		Producer	MRDS
Mt. View Crushing Plant	Stone, Crushed/Broken	Processing Plant	Producer	MRDS
Near Quarry	Stone	Surface	Producer	MRDS
Neary Rock Quarry	Stone		Producer	MRDS
New Almaden	Copper		Producer	MRDS
New Page Mill Quarries	Stone		Producer	MRDS
O:connell Bros.	Magnesite		Producer	MRDS
Oak Hill	Stone		Producer	MRDS
Pacheco Creek Pit	Sand and Gravel, Construction	Surface	Producer	MRDS
Page Mill Quarry	Stone	Surface	Producer	MRDS
Patton Mill	Stone, Crushed/Broken	Processing Plant	Producer	MRDS
Patton Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Pennsylvania	Manganese		Producer	MRDS
Permanente Cement Plant	Calcium	Processing Plant	Producer	MRDS
Permanente Cement Plant	Limestone, General		Producer	MRDS
Permanente Metals Corp.	Stone, Crushed/Broken		Producer	MRDS
Permanente Quarry	Calcium	Surface	Producer	MRDS
Piazza Sandstone Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Pine Ridge	Manganese		Producer	MRDS
Pulse	Manganese		Producer	MRDS
Quarry	Stone		Producer	MRDS
Quarry	Stone		Producer	MRDS
Quarry	Stone		Producer	MRDS
Quarry	Stone		Producer	MRDS
Queen Bee No 1 Claim	Manganese		Producer	MRDS
Rmca Group	Manganese		Producer	MRDS
San Jose	Manganese		Producer	MRDS
Santa Clara Mill	Mercury	Processing Plant	Producer	MRDS
Saratoga	Stone, Crushed/Broken		Producer	MRDS
Security	Magnesite		Producer	MRDS
Senator Dump	Stone		Producer	MRDS
Serpa Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Smith	Chromium		Producer	MRDS
Sondgrath Bros.	Stone, Crushed/Broken		Producer	MRDS
Stanford Quarry	Stone		Producer	MRDS
Stevens Creek Quarry	Stone, Crushed/Broken	Surface	Producer	MRDS
Turner Deposit	Manganese		Producer	MRDS
Unnamed Location	Mercury		Producer	MRDS
Unnamed Location	Mercury		Producer	MRDS
Unnamed Location	Mercury		Producer	MRDS
Unnamed Location	Chromium		Producer	MRDS
Voss	Stone, Crushed/Broken		Producer	MRDS
Western Magnesite Co. Property	Chromium		Producer	MRDS
Western Mine	Magnesite		Producer	MRDS
Western Mine	Magnesite		Producer	MRDS
Western Mines	Magnesite		Producer	MRDS
Winegar	Manganese		Producer	MRDS
Winfield Pit	Stone, Crushed/Broken	Surface	Producer	MRDS
Winship	Chromium		Producer	MRDS
Winship	Manganese		Producer	MRDS
Permanente Cement Plant & Quarry	Cement	Facility	Temporarily Idled	MSHA
A M Kelley Prospect			Prospect	MRDS
A. M. Kelley Prospect			Occurrence	MRDS
Acme Lode Claim			Occurrence	MRDS
Acme Lode Claim		Surface	Prospect	MRDS
Adobe Creek Quarry	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Ala Mountain Mine		Surface-Underground	Past Producer	MRDS
Alma	Stone		Prospect	MRDS
America Mine	Mercury	Underground	Past Producer	MRDS
American	Mercury		Past Producer	MRDS
Antonia Claim	Manganese		Occurrence	MRDS
Antonia Claim		Surface	Prospect	MRDS
Avery Prospect	Manganese		Occurrence	MRDS
Bahr & Ledoyen, Inc.	Stone	Surface	Past Producer	MRDS
Bay Cities Water Co.	Chromium		Occurrence	MRDS
Bay Cities Water Col			Past Producer	MRDS
Beauregard Group	Manganese	Underground	Past Producer	MRDS
Bernal	Mercury		Past Producer	MRDS
Bernal Mine	Mercury	Surface	Past Producer	MRDS
Billy Goat Prospect			Past Producer	MRDS
Black Bear Mine	Manganese		Occurrence	MRDS
Black Bear Mine		Surface-Underground	Prospect	MRDS
Black Eagle	Manganese	Surface	Unknown	MRDS
Black Horse Claim		Surface	Past Producer	MRDS
Black Wonder Sec.28 Group.		Surface	Past Producer	MRDS
Blackbird	Manganese		Prospect	MRDS
Blackbird Claim	Manganese		Occurrence	MRDS
Blackbird Claim	Manganese	Surface	Prospect	MRDS
Bond	Calcium		Prospect	MRDS
Bonetti		Surface	Past Producer	MRDS
Bonetti Mine	Chromium		Occurrence	MRDS
Borrow Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Borrow Pit	Stone	Surface	Past Producer	MRDS
Bowie	Mercury		Occurrence	MRDS
Bowie	Mercury		Unknown	MRDS
Bradford Ranch	Magnesite	Surface	Past Producer	MRDS
Brainard			Occurrence	MRDS
Brainard Prospect	Mercury	Underground	Prospect	MRDS
Brem Brs.	Sand and Gravel, Construction		Prospect	MRDS
Brems Pit	Sand and Gravel, Construction		Unknown	MRDS
Calaveras Road Pit	Stone, Dimension		Unknown	MRDS
Cedar Tree Claims		Surface	Prospect	MRDS
Cedar Tree Claims 1 and 2	Manganese		Occurrence	MRDS
Chaboya	Mercury	Underground	Unknown	MRDS
Chaboya - Hillsdale	Mercury		Past Producer	MRDS
Cochrane	Magnesite		Prospect	MRDS
Commercial Materials	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Comstock	Mercury		Past Producer	MRDS
Copernicus Peak Prospect	Manganese		Prospect	MRDS
Costello Mine	Mercury		Prospect	MRDS
Cottonwood Claim /blackwonder	Manganese	Underground	Unknown	MRDS
Crystal Ball Mining Co.	Mercury	Surface	Past Producer	MRDS
Cupertino Quarry	Construction Sand and Gravel	Surface	Intermittent	MSHA
Curtner Quarry	Construction Sand and Gravel	Surface	Intermittent	MSHA
Davenport Prospect	Manganese		Occurrence	MRDS
Davenport Prospect			Occurrence	MRDS
Davenport and Smith Property	Manganese		Occurrence	MRDS
Davenport and Smith Property		Surface-Underground	Prospect	MRDS
Deep Gulch Placer	Mercury		Past Producer	MRDS
Deep Gulch Placer	Mercury		Unknown	MRDS
Deforest Prospect			Occurrence	MRDS
Deforest Prospect			Past Producer	MRDS
Deposit 8, Big Matt	Manganese	Underground	Past Producer	MRDS
Doak No 2 Prospect		Surface-Underground	Past Producer	MRDS
Douglas Ranch	Calcium	Surface	Past Producer	MRDS
Downer Plant	Stone	Surface	Unknown	MRDS
Ed Kelley Prospect		Surface	Prospect	MRDS
Enriquita	Mercury		Past Producer	MRDS
Enriquita Mine	Mercury	Underground	Past Producer	MRDS
Fable Mine			Occurrence	MRDS
Fable Mine		Surface-Underground	Past Producer	MRDS
Ferraro Prospect	Chromium		Occurrence	MRDS
Ferrero		Surface	Past Producer	MRDS
Fidelity Deposit	Magnesite	Surface	Past Producer	MRDS
Frankel Prospect			Occurrence	MRDS
Frankel Prospect	Manganese		Prospect	MRDS
Fredrickson-Wetson	Stone	Surface	Past Producer	MRDS
Freeman Quarry	Construction Sand and Gravel	Surface	Abandoned	MSHA
Garden City Pottery Co.	Clay		Past Producer	MRDS
Garden City Pottery Co.	Clay	Surface	Past Producer	MRDS
Gilroy Hot Springs	Geothermal		Occurrence	MRDS
Gladding Bros. Mfg. Co.	Clay		Past Producer	MRDS
Gladding Bros. Mfg. Co.	Clay	Surface	Past Producer	MRDS
Gravel Pit	Sand and Gravel, Construction		Past Producer	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
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
Gravel Pit	Sand and Gravel, Construction	Surface	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
Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Graystone Quarry	Stone		Prospect	MRDS
Great Expectation Mine			Occurrence	MRDS
Great Expectation Mine		Surface-Underground	Prospect	MRDS
Guadalupe Lime Co.	Calcium	Surface	Past Producer	MRDS
Guadalupe Mine	Mercury	Surface-Underground	Past Producer	MRDS
Hahn Ranch Deposits		Surface	Past Producer	MRDS
Hellyer Pit	Stone, Dimension		Unknown	MRDS
Hillsdale	Mercury	Underground	Past Producer	MRDS
Hillsdale Pit and Mill	Sand and Gravel, Construction		Past Producer	MRDS
Hooker Creek			Occurrence	MRDS
Hooker Creek	Copper	Underground	Past Producer	MRDS
Houret	Calcium	Processing Plant	Prospect	MRDS
Howson Pit	Stone, Dimension		Unknown	MRDS
Hubble Quarry and Mill	Granite		Unknown	MRDS
Hubble Sand and Gravel	Sand and Gravel, Construction		Unknown	MRDS
Hubble Sand and Gravel Pit and Mill	Sand and Gravel, Construction	Surface	Past Producer	MRDS
John Knorr Mine	Stone, Dimension		Unknown	MRDS
Jones Group-Nos.1-9		Surface	Past Producer	MRDS
Keller Brothers Prospect			Occurrence	MRDS
Keller Brothers Prospect	Manganese		Prospect	MRDS
Keller Mine Group		Surface	Past Producer	MRDS
Kelley Prospect			Occurrence	MRDS
Kilday Ranch		Surface	Past Producer	MRDS
Laguna Sera Ranch			Occurrence	MRDS
Laurel Lake Ranch		Surface-Underground	Past Producer	MRDS
Laurel Lake Ranch Deposits	Chromium		Past Producer	MRDS
Leguna Scca Ranch	Copper		Prospect	MRDS
Lehigh Permanente Quarry	Cement	Surface	Abandoned	MSHA
Lone Hill	Stone	Surface	Past Producer	MRDS
Lopez Prospect			Occurrence	MRDS
Lopez Prospect			Unknown	MRDS
Los Gatos Sand & Gravel Co.	Sand and Gravel, Construction		Past Producer	MRDS
Los Gatos Sand & Gravel Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Macson Ranch	Copper		Prospect	MRDS
Mammoth Mine		Surface	Prospect	MRDS
Mammouth Mine			Occurrence	MRDS
Masson Ranch			Occurrence	MRDS
Masson Ranch Property	Copper	Surface	Occurrence	MRDS
Mateos Ranch Deposit		Surface-Underground	Past Producer	MRDS
May Be Claim			Occurrence	MRDS
May Be Claim	Manganese		Unknown	MRDS
McCoy	Manganese	Surface	Past Producer	MRDS
McFarland Chromite	Chromium	Surface-Underground	Prospect	MRDS
Mexican Prospect			Occurrence	MRDS
Mexican Prospect No. 1		Surface	Unknown	MRDS
Mexican Prospect No. 3		Surface-Underground	Past Producer	MRDS
Miller	Manganese	Surface	Past Producer	MRDS
Morgan Hill Prospect			Past Producer	MRDS
Mount Hamilton Mine			Occurrence	MRDS
Mt Hamilton Prospect			Occurrence	MRDS
Murmac Group		Surface-Underground	Past Producer	MRDS
New Almaden - Central Stope Area	Mercury		Past Producer	MRDS
New Almaden - Cora Blanca Area	Mercury		Past Producer	MRDS
New Almaden - Harry Area	Mercury		Past Producer	MRDS
New Almaden - North Randol	Mercury		Past Producer	MRDS
New Almaden - San Francisco Area	Mercury		Past Producer	MRDS
New Almaden - San Pedro-Almaden Area	Mercury		Past Producer	MRDS
New Almaden - Santa Mariana Area	Mercury		Past Producer	MRDS
New Almaden - South Randol	Mercury		Past Producer	MRDS
New Almaden - Velasco Area	Mercury		Past Producer	MRDS
New Almaden - Victoria Area	Mercury		Past Producer	MRDS
New Almaden District	Mercury		Past Producer	MRDS
New Almaden Mine	Mercury	Surface-Underground	Past Producer	MRDS
New Almaden Placers & Dumps	Mercury		Past Producer	MRDS
New North Almaden	Mercury	Surface	Prospect	MRDS
New Page Mill Quarries	Stone	Surface	Past Producer	MRDS
Newsom Prospect			Occurrence	MRDS
Newson Prospect		Surface	Prospect	MRDS
O'Connell Brothers	Magnesite		Unknown	MRDS
O'Connell Mine	Chromium		Past Producer	MRDS
O'Connell Mine		Surface	Past Producer	MRDS
Oak Hill	Stone	Surface	Past Producer	MRDS
Portable Extec	Sand, Industrial NEC	Surface	Abandoned	MSHA
Pacific Coast Aggregates, Inc.	Sand and Gravel, Construction		Prospect	MRDS
Palo Alto Sewage Sludge	Gold, Silver, Phosphorus-Phosphates		Occurrence	MRDS
Peble	Manganese	Surface	Past Producer	MRDS
Pennsylvania		Surface	Past Producer	MRDS
Permanente Cement Co.	Calcium		Past Producer	MRDS
Permanente Metals Corp.	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Permanente Rock Plant	Crushed, Broken Stone NEC	Facility	Abandoned	MSHA
Piazza	Sand and Gravel, Construction		Past Producer	MRDS
Pierce Road Quarry	Stone, Crushed/Broken		Prospect	MRDS
Pine Ridge Mine		Surface	Past Producer	MRDS
Polak Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Portable #2	Crushed, Broken Stone NEC	Surface	Intermittent	MSHA
Providencia	Mercury		Past Producer	MRDS
Providencia Mine	Mercury	Underground	Past Producer	MRDS
Pulse Prospect		Surface-Underground	Past Producer	MRDS
Quarry	Stone	Surface	Unknown	MRDS
Quarry	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Quarry	Stone	Surface	Unknown	MRDS
Quarry	Stone		Prospect	MRDS
Quarry	Stone	Surface	Past Producer	MRDS
Quarry	Stone	Surface	Past Producer	MRDS
Quarry	Calcium		Prospect	MRDS
Quarry	Stone	Surface	Past Producer	MRDS
Queen Bee No. 1	Manganese		Unknown	MRDS
Raische	Sand and Gravel, Construction		Past Producer	MRDS
Raische	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Ramelli Prospect	Chromium		Occurrence	MRDS
Ranelli		Underground	Past Producer	MRDS
Remillard-Dandini Co.	Clay		Past Producer	MRDS
Remillard-Dandini Co.	Clay	Surface	Past Producer	MRDS
Rianda	Mercury		Past Producer	MRDS
Rianda	Mercury	Underground	Past Producer	MRDS
Roggasch Bros.	Stone, Crushed/Broken		Prospect	MRDS
Roggasch Bros. Quarry	Stone	Surface	Unknown	MRDS
Serpa Pit Quarry	Crushed, Broken Stone NEC	Surface	Abandoned	MSHA
San Antonio	Mercury		Past Producer	MRDS
San Antonio Mine	Mercury	Underground	Past Producer	MRDS
San Francisco Mine	Mercury	Surface-Underground	Unknown	MRDS
San Jose	Manganese	Surface	Past Producer	MRDS
San Jose Brick & Tile Co.	Clay		Past Producer	MRDS
San Jose Brick & Tile Co.	Clay	Surface	Past Producer	MRDS
San Jose Cement Co.	Calcium		Prospect	MRDS
San Jose Plant	Sand and Gravel, Construction	Surface	Unknown	MRDS
San Mateo	Mercury		Past Producer	MRDS
San Mateo Mine	Mercury	Underground	Past Producer	MRDS
San Pedro Open Pit	Mercury	Surface-Underground	Unknown	MRDS
Sand & Gravel Pit	Sand and Gravel, Construction		Past Producer	MRDS
Sand & Gravel Pit	Sand and Gravel, Construction		Past Producer	MRDS
Sand & Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Sand & Gravel Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Santa Clara	Mercury		Past Producer	MRDS
Santa Clara Sand & Gravel	Sand and Gravel, Construction		Past Producer	MRDS
Santa Clara Sand & Gravel	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Santa Teresa	Mercury		Past Producer	MRDS
Santa Teresa Mine	Mercury	Surface	Past Producer	MRDS
Saratoga	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Scott Creek Pit	Stone, Dimension		Unknown	MRDS
Section 28	Manganese		Occurrence	MRDS
Security	Magnesite	Surface	Past Producer	MRDS
Senator Mine	Mercury	Underground	Past Producer	MRDS
Silver Creek	Mercury		Past Producer	MRDS
Silver Creek	Mercury	Surface-Underground	Unknown	MRDS
Silver Creek Hills Prospects	Mercury	Surface	Past Producer	MRDS
Smith	Chromium	Surface	Prospect	MRDS
Sondgrath Bros.	Stone, Crushed/Broken	Surface	Past Producer	MRDS
Stanford Quarry	Stone	Surface	Past Producer	MRDS
Steinheimer Ranch Prospect	Chromium		Prospect	MRDS
Stevens Creek Quarry	Stone, Dimension		Unknown	MRDS
Stevens Creek Quarry	Stone, Dimension		Unknown	MRDS
Stevens Creek Quarry	Sand and Gravel, Construction	Surface	Unknown	MRDS
Stevens Creek Quarry	Sand and Gravel, Construction	Surface	Unknown	MRDS
Tilton Ranch	Mercury		Occurrence	MRDS
Tilton Ranch Prospect	Mercury		Prospect	MRDS
Triple Jump Claim			Occurrence	MRDS
Turner Deposit			Past Producer	MRDS
Unnamed Limestone Deposit	Limestone, General	Surface	Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Mercury	Surface	Prospect	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Mercury	Surface	Past Producer	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Manganese		Prospect	MRDS
Unnamed Location	Mercury		Prospect	MRDS
Unnamed Location	Mercury		Prospect	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Mercury		Prospect	MRDS
Unnamed Location	Chromium		Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Gemstone		Occurrence	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Chromium		Prospect	MRDS
Unnamed Location	Gemstone		Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Mercury		Prospect	MRDS
Unnamed Location	Gemstone		Occurrence	MRDS
Unnamed Location	Stone, Crushed/Broken		Occurrence	MRDS
Unnamed Location	Mercury	Underground	Prospect	MRDS
Unnamed Location	Chromium		Prospect	MRDS
Unnamed Location	Chromium	Underground	Past Producer	MRDS
Uvas Pit	Sand and Gravel, Construction		Past Producer	MRDS
Uvas Pit	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Voss	Stone, Crushed/Broken	Surface	Past Producer	MRDS
W. W. Burnett Ranch	Magnesite		Prospect	MRDS
Wallace Ranch			Occurrence	MRDS
Wallace Ranch		Surface	Prospect	MRDS
Western Gravel Co.	Sand and Gravel, Construction		Past Producer	MRDS
Western Gravel Co.	Sand and Gravel, Construction	Surface	Past Producer	MRDS
Western Magnesite Company		Surface	Past Producer	MRDS
Western Mine	Magnesite	Surface	Past Producer	MRDS
Western Mine	Manganese	Surface	Past Producer	MRDS
Western Tile and Supply Co.	Sand and Gravel, Construction		Unknown	MRDS
Western Tile and Supply Co.	Sand and Gravel, Construction		Unknown	MRDS
Williams-Rodriques Prospect	Mercury	Surface-Underground	Prospect	MRDS
Winegar Mine		Surface-Underground	Past Producer	MRDS
Winship	Calcium		Prospect	MRDS
Winship Leases		Surface-Underground	Past Producer	MRDS
Wright	Mercury		Past Producer	MRDS
Wright Property	Mercury	Surface	Past Producer	MRDS
Yates Lease	Chromium		Occurrence	MRDS
Yetes Lease		Surface	Past Producer	MRDS