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 |
|---|---|---|---|---|
| SidewinderSan Bernardino, CAMSHA 0404801 | Gold OreUnderground | AbandonedStatus date: 12/01/1986 | Anderson Mining & Exploration IncReported operatorAnderson MargaretReported controller | Neither history importedView source coverage → |
| Sidewinder #1Kern, CAMSHA 0404402 | Gold OreUnderground | AbandonedStatus date: 01/29/1981 | Sidewinder Mine & Milling Company IncReported operatorO'Connor E EReported controller | Neither history importedView source coverage → |
| Sidewinder PitImperial, CANear WinterhavenMSHA 0405730 | Construction Sand and GravelSurface | AbandonedStatus date: 06/24/2008 | Kiewit Pacific CoReported operatorKiewit Infrastructure Group IncReported controller | Production / employmentSafety recordsView source coverage → |
| Sierra GoldSierra, CAMSHA 0404641 | Gold OreUnderground | AbandonedStatus date: 07/16/1984 | Alfred MitchellReported operatorAlfred MitchellReported controller | Neither history importedView source coverage → |
| Sierra Lady Site 1Lassen, CANear DoyleMSHA 0405872 | Sand, CommonSurface | AbandonedStatus date: 09/30/2015 | US Mine CorpReported operatorJohn Bremer; Brady BartoReported controller | Production / employmentView source coverage → |
| Sierra MineSierra, CAMSHA 0404303 | Gold OreSurface | AbandonedStatus date: 07/26/1983 | Sierra Mines CompanyReported operatorNixon J EReported controller | Neither history importedView source coverage → |
| Sierra Piedra CompanyKern, CAMSHA 0404831 | Construction Sand and GravelSurface | AbandonedStatus date: 10/04/1991 | Sierra Piedra CompanyReported operatorWebb Aubrey MReported controller | Neither history importedView source coverage → |
| Sierra QuarryMono, CAMSHA 0404715 | Construction Sand and GravelSurface | AbandonedStatus date: 10/12/1984 | Hunewill Ready Mix CompanyReported operatorLoren E HunewillReported controller | Neither history importedView source coverage → |
| Siltex Pit & Pacific MineMono, CAMSHA 0404440 | TalcSurface | AbandonedStatus date: 04/20/1982 | Standard Industrial Minerals IncReported operatorStandard Slag CompanyReported controller | Neither history importedView source coverage → |
| Silver CrossKern, CAMSHA 0404570 | Silver OreUnderground | AbandonedStatus date: 10/05/1983 | Capital Mineral Association IncReported operatorSpringstead Terry LReported controller | Neither history importedView source coverage → |
| Silver Dollar Gold MineSierra, CAMSHA 0404633 | Gold OreUnderground | AbandonedStatus date: 06/12/1985 | Silver Dollar Mining Company IncReported operatorDe Grio Roland(Mike)Reported controller | Neither history importedView source coverage → |
| Silver FallsShasta, CAMSHA 0404569 | Gold OreUnderground | AbandonedStatus date: 10/21/1983 | James D Parrott Mining & Timber CompanyReported operatorParrott James DReported controller | Neither history importedView source coverage → |
| Silver LakeSan Bernardino, CAMSHA 0404358 | Iron OreSurface | AbandonedStatus date: 04/27/1982 | Transcorp Technology IncReported operatorTranscorp LtdReported controller | Neither history importedView source coverage → |
| Silver Reef MineSan Bernardino, CAMSHA 0404068 | Gold OreSurface | AbandonedStatus date: 09/18/1979 | Annona CompanyReported operatorAnnona CompanyReported controller | Neither history importedView source coverage → |
| Simpco BarDel Norte, CANear Smith RiverMSHA 0405191 | Construction Sand and GravelSurface | AbandonedStatus date: 12/04/2003 | Morgan Redi-MixReported operatorRandy MorganReported controller | Production / employmentSafety recordsView source coverage → |
| Singley PitHumboldt, CAMSHA 0402713 | Construction Sand and GravelSurface | AbandonedStatus date: 06/26/1979 | County Of HumboldtReported operatorHumboldt County-CAReported controller | Neither history importedView source coverage → |
| Siskiyou #141 Homemade Portable ScreeninSiskiyou, CAMSHA 0404420 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/30/1982 | Siskiyou County Department Of Public WorksReported operatorSiskiyou County-CaReported controller | Neither history importedView source coverage → |
| Siskiyou #322 Koleman Screening PlantSiskiyou, CAMSHA 0404419 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/30/1982 | Siskiyou County Department Of Public WorksReported operatorSiskiyou County-CaReported controller | Neither history importedView source coverage → |
| Siskiyou #431-E Screening PlantSiskiyou, CAMSHA 0404422 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/30/1982 | Siskiyou County Department Of Public WorksReported operatorSiskiyou County-CaReported controller | Neither history importedView source coverage → |
| SISKIYOU ASPHALTSiskiyou, CAMSHA 0405220 | Construction Sand and GravelSurface | AbandonedStatus date: 08/24/2000 | Siskiyou AsphaltReported operatorJohn F SheaReported controller | Production / employmentSafety recordsView source coverage → |
| Siskiyou County Portable CrusherSiskiyou, CAMSHA 0402787 | PumiceSurface | AbandonedStatus date: 05/15/1981 | Siskiyou County Road DepartmentReported operatorSiskiyou County-CaReported controller | Neither history importedView source coverage → |
| Siskiyou County Portable PlantSiskiyou, CAMSHA 0404412 | Construction Sand and GravelSurface | AbandonedStatus date: 06/04/1993 | Siskiyou County Road DepartmentReported operatorSiskiyou County-CaReported controller | Neither history importedView source coverage → |
| Six Mile HillShasta, CAMSHA 0405179 | PumiceSurface | AbandonedStatus date: 08/24/1994 | Hat Creek Construction IncReported operatorPerry ThompsonReported controller | Neither history importedView source coverage → |
| Skedadele PitLassen, CAMSHA 0404628 | Construction Sand and GravelSurface | AbandonedStatus date: 05/08/1984 | Lassen Sand & GravelReported operatorBollman Fred AReported controller | Neither history importedView source coverage → |
| Skyline QuarrySan Mateo, CAMSHA 0404054 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 03/12/1979 | San Francisco Water DepartmentReported operatorSan Francisco County-CaReported controller | Neither history importedView source coverage → |
| Slaughterhouse AggregatesSan Diego, CANear Lakeside, CAMSHA 0402251 | Construction Sand and GravelSurface | AbandonedStatus date: 08/05/2026 | Martin Marietta San Diego Aggregates, LLCReported operatorMartin Marietta Materials IncReported controller | Production / employmentSafety recordsView source coverage → |
| Sloan Canyon PlantSan Diego, CANear El CajonMSHA 0403027 | Construction Sand and GravelSurface | AbandonedStatus date: 12/12/2003 | Calmat CompanyReported operatorVulcan Materials CompanyReported controller | Production / employmentSafety recordsView source coverage → |
| Smc/Soboba Materials CompanyRiverside, CAMSHA 0405078 | Construction Sand and GravelSurface | AbandonedStatus date: 11/02/1992 | Smc/Soboba Materials CompanyReported operatorChuck PerraultReported controller | Neither history importedView source coverage → |
| Smith PitTrinity, CANear weavervilleMSHA 0405007 | Construction Sand and GravelSurface | AbandonedStatus date: 07/20/2022 | Trinity Sand and GravelReported operatorJohn J BuickReported controller | Production / employmentSafety recordsView source coverage → |
| Smith River Pit & MillDel Norte, CANear Cresent CityMSHA 0401871 | Construction Sand and GravelSurface | AbandonedStatus date: 02/16/2012 | Granite Construction CompanyReported operatorGranite Construction IncReported controller | Production / employmentSafety recordsView 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.