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 |
|---|---|---|---|---|
| Rocky Bar Gravel ProjectEl Dorado, CAMSHA 0404734 | Gold OreUnderground | AbandonedStatus date: 06/09/1986 | Thompson-Wylie Mining IncReported operatorThompson-Wylie Mining IncReported controller | Neither history importedView source coverage → |
| Rocky Jewel MineShasta, CAMSHA 0404202 | PumiceSurface | AbandonedStatus date: 04/04/1986 | Rocky Jewel MineReported operatorStrombeck Carl & Chris NicolosReported controller | Neither history importedView source coverage → |
| Rodriguez Borrow PitSan Diego, CANear Borrego SpringsMSHA 0405681 | Sand, Industrial NECSurface | AbandonedStatus date: 06/13/2014 | Borrego Sand & Rock IncReported operatorChester M RobertsReported controller | Production / employmentSafety recordsView source coverage → |
| Rodriques PitSan Luis Obispo, CAMSHA 0403480 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 06/19/1979 | Bickford Concrete IncReported operatorBickford Concrete IncReported controller | Neither history importedView source coverage → |
| Rogers MineInyo, CAMSHA 0404610 | TalcSurface | AbandonedStatus date: 05/21/1985 | Pfizer IncReported operatorMinerals Technologies IncReported controller | Neither history importedView source coverage → |
| Rosamond Minerals IncorporatedKern, CAMSHA 0402649 | Common Clays NECFacility | AbandonedStatus date: 03/11/1991 | Rosamond Minerals IncReported operatorVenture Chemicals IncReported controller | Neither history importedView source coverage → |
| Rosamond SiteKern, CANear RosamondMSHA 0405979 | Sand, Industrial NECSurface | AbandonedStatus date: 08/15/2025 | C & M TOPSOIL INCReported operatorCameron Ornelas; Mildred Mariana GomezReported controller | Production / employmentSafety recordsView source coverage → |
| Round Valley MineInyo, CAMSHA 0404581 | Tungsten OreUnderground | AbandonedStatus date: 12/29/1982 | Inspiration Mines IncReported operatorTerra Industries IncReported controller | Neither history importedView source coverage → |
| Rowland Pit And MillHumboldt, CAMSHA 0402765 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/1982 | Hoopa Valley Ready MixReported operatorRowland RichardReported controller | Neither history importedView source coverage → |
| ROYAL MOUNTAIN KINGCalaveras, CAMSHA 0404925 | Gold OreSurface | AbandonedStatus date: 12/01/1996 | Meridian Gold CompanyReported operatorFMC CorpReported controller | Neither history importedView source coverage → |
| RUC QUARRYHumboldt, CANear ORLEANSMSHA 0405889 | Sand, Industrial NECSurface | AbandonedStatus date: 05/30/2023 | TT CONSTRUCTIONReported operatorThomas W HornReported controller | Production / employmentSafety recordsView source coverage → |
| Runkle Canyon Pit & MillVentura, CAMSHA 0402104 | Construction Sand and GravelSurface | AbandonedStatus date: 11/05/1985 | Southern Pacific Milling CompanyReported operatorHanson PLCReported controller | Neither history importedView source coverage → |
| Russian River PortableMendocino, CAMSHA 0404891 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 06/19/1991 | Ghilotti Brothers ConstructionReported operatorGhilotti MarioReported controller | Neither history importedView source coverage → |
| S-5 PLANTRiverside, CANear CoronaMSHA 0405329 | Construction Sand and GravelSurface | AbandonedStatus date: 07/17/2018 | C D G Materials IncReported operatorDave BeckReported controller | Production / employmentSafety recordsView source coverage → |
| S-5 YellowRiverside, CANear HighlandMSHA 0405852 | Construction Sand and GravelSurface | AbandonedStatus date: 11/01/2019 | Upland RockReported operatorNeal L Grabowski; Michael J GrabowskiReported controller | Production / employmentSafety recordsView source coverage → |
| Sagamore MineSan Bernardino, CAMSHA 0404381 | Silver OreUnderground | AbandonedStatus date: 07/10/1984 | Westgate Mining & Construction IncReported operatorMowlem John PlcReported controller | Neither history importedView source coverage → |
| Salinas SandSan Luis Obispo, CAMSHA 0405037 | Construction Sand and GravelSurface | AbandonedStatus date: 12/31/1991 | Salinas SandReported operatorElisarraras RickReported controller | Neither history importedView source coverage → |
| Salt Dale PlantKern, CAMSHA 0401598 | Salt, Brine EvaporatedSurface | AbandonedStatus date: 11/30/1978 | Long Beach Salt CompanyReported operatorWestern Salt CompanyReported controller | Neither history importedView source coverage → |
| Saltus Mine And MillSan Bernardino, CAMSHA 0401051 | Salt, Brine EvaporatedSurface | AbandonedStatus date: 05/21/1982 | Leslie Salt CompanyReported operatorCargill IncReported controller | Neither history importedView source coverage → |
| Salyer Pit And MillHumboldt, CAMSHA 0404073 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/1982 | Mc Knight Redi-MixReported operatorMc Knight Redi-MixReported controller | Neither history importedView source coverage → |
| San Andreas AggregatesCalaveras, CANear SAN ANDREASMSHA 0400539 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 12/31/2024 | Martin Marietta Northern California Aggregates,LLCReported operatorMartin Marietta Materials IncReported controller | Production / employmentSafety recordsView source coverage → |
| San Andreas Cement PlantCalaveras, CAMSHA 0402272 | CementFacility | AbandonedStatus date: 10/15/1987 | Calaveras Cement CompanyReported operatorCimenteries Cbr CementbedrijvenReported controller | Neither history importedView source coverage → |
| SAN ANTONIO MATERIALSSan Bernardino, CANear UplandMSHA 0405117 | Construction Sand and GravelSurface | AbandonedStatus date: 02/15/2010 | S L S & N IncReported operatorSteve BubaloReported controller | Production / employmentSafety recordsView source coverage → |
| San Benito Sand PlantSan Benito, CAMSHA 0404270 | Construction Sand and GravelSurface | AbandonedStatus date: 04/14/1992 | Granite Rock CompanyReported operatorPeter J LemonReported controller | Neither history importedView source coverage → |
| San BernardinoSan Bernardino, CANear San BernardinoMSHA 0405524 | Construction Sand and GravelSurface | AbandonedStatus date: 08/02/2010 | Robertson'sReported operatorRRM Development Corporation; Mitsubishi CorpReported controller | Production / employmentSafety recordsView source coverage → |
| San Bernardino PlantSan Bernardino, CANear San BernardinoMSHA 0404356 | Construction Sand and GravelSurface | AbandonedStatus date: 02/28/2018 | Holliday Trucking IncReported operatorPenny J HollidayReported controller | Production / employmentSafety recordsView source coverage → |
| San Bernardino PlantSan Bernardino, CANear HighlandMSHA 0405569 | Construction Sand and GravelSurface | AbandonedStatus date: 06/30/2011 | Empire Rock IncReported operatorStan HouckReported controller | Production / employmentSafety recordsView source coverage → |
| San Clemente PlantOrange, CAMSHA 0400549 | Common ShaleSurface | AbandonedStatus date: 10/30/1978 | Crestlite Aggregates IncReported operatorCrestlite Aggregates IncReported controller | Neither history importedView source coverage → |
| San Clemente ProjectOrange, CAMSHA 0404382 | Construction Sand and GravelSurface | AbandonedStatus date: 06/30/1983 | Guy F Atkinson CompanyReported operatorAtkinson Guy F CompanyReported controller | Neither history importedView source coverage → |
| Sand City Beach PlantMonterey, CAMSHA 0404876 | Construction Sand and GravelSurface | AbandonedStatus date: 02/07/1990 | Monterey Sand Company IncReported operatorMc Donald R E IiiReported 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.