Mines in Santa Clara County, California
383Total
89Active
| 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 |