HISTORICAL SITES / RESEARCH DIRECTORY
Find the public record behind a former mining site. Explore reported locations, mined materials and operating history as a starting point for acquisition, reuse or reclamation research.
History means records exist in the imported sources, including older periods. Missing history is not evidence of a clean safety record. Operator and controller names are the last relationships reported in the Mines snapshot; they are not verified current property owners.
| Mine / reported location | Material / type | Reported status | Reported relationships | Available history |
|---|---|---|---|---|
| Calico PlantSan Bernardino, CANear BarstowMSHA 0405769 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 05/19/2009 | Langley Pacific Resources LLCReported operatorInternational Zeolite Group Inc; Marshall PettitReported controller | Production / employmentSafety recordsView source coverage → |
| California Clay PitInyo, CAMSHA 0405170 | Common Clays NECSurface | AbandonedStatus date: 06/15/1992 | Imv-Div/Floridin CompanyReported operatorRio Tinto GroupReported controller | Neither history importedView source coverage → |
| California Hectorite PitInyo, CANear Amargosa Valley, NVMSHA 0405884 | Clay, Ceramic, Refractory Mnls.Surface | AbandonedStatus date: 09/09/2025 | BYK USA LLCReported operatorAltana Group (Germany)Reported controller | Production / employmentSafety recordsView source coverage → |
| California MineSan Diego, CANear Warner SpringsMSHA 0405508 | Crushed, Broken Stone NECUnderground | AbandonedStatus date: 03/26/2002 | Dean WebbReported operatorDean WebbReported controller | Safety recordsView source coverage → |
| California No 1 Portable CrusherSiskiyou, CAMSHA 0404804 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 08/21/1995 | Kiewit Pacific Co.Reported operatorKiewit Infrastructure Group IncReported controller | Neither history importedView source coverage → |
| California Portable #2Riverside, CAMSHA 0405207 | Construction Sand and GravelSurface | AbandonedStatus date: 01/10/1994 | Kiewit Pacific Co.Reported operatorKiewit Infrastructure Group IncReported controller | Neither history importedView source coverage → |
| California RandKern, CAMSHA 0404653 | Gold OreUnderground | AbandonedStatus date: 11/28/1983 | Silver State Mining CorpReported operatorWilliam W ReedReported controller | Neither history importedView source coverage → |
| California Sand And GravelSan Diego, CAMSHA 0404840 | Construction Sand and GravelSurface | AbandonedStatus date: 01/01/1992 | California Sand & GravelReported operatorCleland GeorgeReported controller | Neither history importedView source coverage → |
| California Silica ProductsSan Bernardino, CANear VictorvilleMSHA 0405847 | Sand, CommonSurface | AbandonedStatus date: 01/06/2023 | Western States WholesaleReported operatorRandall Humphreys; Robert HumphreysReported controller | Production / employmentSafety recordsView source coverage → |
| California Valley Community Services GraSan Luis Obispo, CAMSHA 0404398 | Construction Sand and GravelSurface | AbandonedStatus date: 07/29/1982 | California Community Services GravelReported operatorCalifornia Community Services GravelReported controller | Neither history importedView source coverage → |
| California Valley Gyp PitSan Luis Obispo, CAMSHA 0404359 | GypsumSurface | AbandonedStatus date: 06/25/1986 | W-R GypsumReported operatorRankin Randal & Larry WedelReported controller | Neither history importedView source coverage → |
| Calmat PlantLos Angeles, CAMSHA 0401717 | Construction Sand and GravelSurface | AbandonedStatus date: 08/27/1980 | Conrock CompanyReported operatorCalmat CompanyReported controller | Neither history importedView source coverage → |
| Cal Pacific MillSan Bernardino, CAMSHA 0404030 | Silver OreFacility | AbandonedStatus date: 01/01/1980 | Cal PacificReported operatorCal PacificReported controller | Neither history importedView source coverage → |
| Cal Pumice Sand & GravelInyo, CAMSHA 0404661 | Construction Sand and GravelSurface | AbandonedStatus date: 05/24/1984 | Cal Pumice IncReported operatorEdward ScharfReported controller | Neither history importedView source coverage → |
| Calspar MineSan Bernardino, CAMSHA 0404114 | Clay, Ceramic, Refractory Mnls.Surface | AbandonedStatus date: 11/07/1988 | Calspar Division-Steelhead Resources IncReported operatorSteelhead Resources LtdReported controller | Neither history importedView source coverage → |
| Calspar PlantLos Angeles, CAMSHA 0404818 | FeldsparFacility | AbandonedStatus date: 08/23/1990 | Calspar Division-Steelhead Resources IncReported operatorSteelhead Resources LtdReported controller | Neither history importedView source coverage → |
| Camino Sand & GravelEl Dorado, CAMSHA 0402779 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/1982 | Camino Sand & GravelReported operatorWeaver William O-Robert V NeilsenReported controller | Neither history importedView source coverage → |
| Camp Connell Rock QuarryCalaveras, CAMSHA 0404401 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/30/1982 | Claude C Wood CompanyReported operatorEmery ConradReported controller | Neither history importedView source coverage → |
| Campo Materials CompanySan Diego, CANear campoMSHA 0405015 | Sand, CommonSurface | AbandonedStatus date: 04/01/2019 | Campo Materials CompanyReported operatorMuht-Hei IncReported controller | Production / employmentSafety recordsView source coverage → |
| Campo Seco PitCalaveras, CAMSHA 0400943 | Construction Sand and GravelSurface | AbandonedStatus date: 03/17/1978 | Flintkote CompanyReported operatorCimenteries Cbr CementbedrijvenReported controller | Neither history importedView source coverage → |
| Camp Rock MineSan Bernardino, CAMSHA 0404853 | Gold OreSurface | AbandonedStatus date: 11/07/1988 | National Resource Management IncReported operatorSmith MikeReported controller | Neither history importedView source coverage → |
| Canebrake Pit & MillKern, CAMSHA 0402797 | Construction Sand and GravelSurface | AbandonedStatus date: 02/23/1978 | Osborn Sand & GravelReported operatorOsborn Sand & GravelReported controller | Neither history importedView source coverage → |
| Canica Crusher #929-Lone PineInyo, CANear Lone PineMSHA 0405674 | Construction Sand and GravelSurface | AbandonedStatus date: 02/05/2007 | BJ Rees's EnterpriseReported operatorBlaine J ReesReported controller | Production / employmentSafety recordsView source coverage → |
| Canyon Rock PitMerced, CANear Los BanosMSHA 0405804 | Sand, Industrial NECSurface | AbandonedStatus date: 01/03/2011 | F. S. Rod IncorporatedReported operatorFrancis Steve RodriguesReported controller | Production / employmentSafety recordsView source coverage → |
| C A Rasmussen Inc Crusher UnitsLos Angeles, CANear Canyon CountryMSHA 0405722 | Construction Sand and GravelSurface | AbandonedStatus date: 03/31/2018 | C A Rasmussen IncReported operatorCharles RasmussenReported controller | Production / employmentSafety recordsView source coverage → |
| CaribouPlumas, CAMSHA 0404616 | Gold OreSurface | AbandonedStatus date: 06/18/1984 | High Sierra Mining IncReported operatorHigh Sierra Mining IncReported controller | Neither history importedView source coverage → |
| Carlotta Wash PlantHumboldt, CANear ScotiaMSHA 0405462 | Construction Sand and GravelFacility | AbandonedStatus date: 11/01/2005 | Pacific Lumber CompanyReported operatorMaxxam IncReported controller | Production / employmentSafety recordsView source coverage → |
| CARMELITA MINESan Diego, CANear Warner SpringsMSHA 0405347 | GemstonesUnderground | AbandonedStatus date: 04/11/2017 | San Diego Mining CompanyReported operatorScott L RitchieReported controller | Production / employmentSafety recordsView source coverage → |
| Carmel Valley Sand Company IncorporatedSan Diego, CAMSHA 0405205 | Construction Sand and GravelSurface | AbandonedStatus date: 08/28/1995 | Carmel Valley Sand Company IncReported operatorMc Kay NeilReported controller | Neither history importedView source coverage → |
| Carrizo Plains MineSan Luis Obispo, CAMSHA 0404336 | GypsumSurface | AbandonedStatus date: 08/18/1980 | Fannin-Superior Gypsum CompanyReported operatorButtes Gas & Oil CompanyReported controller | Neither history importedView source coverage → |
Use the mine name and reported location to investigate county parcel and title records, mineral rights, access and planning constraints. MSHA mailing addresses are addresses of record and may not locate the mine. Confirm the parcel and current ownership separately.
EPA mine-site redevelopment primer ↗Check official reclamation inventories and state or tribal programmes for documented hazards, project status and programme criteria. A matching name or an MSHA abandoned status alone does not confirm a programme match.
OSMRE abandoned mine land programme ↗Source: MSHA public datasets. Production history checks quarterly and annual mine production/employment records. Safety history checks violations, inspections and accident reports; other source coverage is available on each mine profile.