HISTORICAL SITES / RESEARCH DIRECTORY

Abandoned mines in California

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.

2,021 matching recordsMSHA snapshot · 2026-10-31

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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 locationMaterial / typeReported statusReported relationshipsAvailable history
Smith SandRiverside, CAMSHA 0405002Construction Sand and GravelSurfaceAbandonedStatus date: 01/03/1992Riverside Cement CompanyReported operatorSsangyong CorpReported controllerNeither history importedView source coverage →
Smith Sand PitSan Luis Obispo, CANear TempletonMSHA 0405647Construction Sand and GravelSurfaceAbandonedStatus date: 05/27/2024Viborg Sand & Gravel, Inc.Reported operatorPaul S Viborg; Debbie K Sturgis-ViborgReported controllerProduction / employmentSafety recordsView source coverage →
Snelling Plant/George Reed IncMerced, CANear MERCEDMSHA 0404932Construction Sand and GravelSurfaceAbandonedStatus date: 08/31/2015George Reed IncReported operatorReed Family CompaniesReported controllerProduction / employmentSafety recordsView source coverage →
Snelling Sand & GravelSierra, CAMSHA 0404627Construction Sand and GravelSurfaceAbandonedStatus date: 10/02/1995Western Stone ProductsReported operatorCimenteries Cbr CementbedrijvenReported controllerNeither history importedView source coverage →
Snowcap MineInyo, CAMSHA 0404651Gold OreSurfaceAbandonedStatus date: 12/31/1988Lost Dutchman Construction IncReported operatorHelms Robert L Construction & Development CoReported controllerNeither history importedView source coverage →
Snow Cap Mine & MillInyo, CAMSHA 0404871Gold OreFacilityAbandonedStatus date: 07/11/1991Sunshine Mining CompanyReported operatorSunshine Mining & Refining CompanyReported controllerNeither history importedView source coverage →
Snow RockSan Bernardino, CAMSHA 0404702LimeSurfaceAbandonedStatus date: 02/10/1988L S Hawley CorpReported operatorL D HawleyReported controllerNeither history importedView source coverage →
SNOW'S QUARRYEl Dorado, CANear garden valleyMSHA 0405446Construction Sand and GravelSurfaceAbandonedStatus date: 01/05/2004Snow'S Quarry ProductsReported operatorMichael Palmer; Lemoin BrewerReported controllerProduction / employmentSafety recordsView source coverage →
Snow's QuarryEl Dorado, CANear PlacervilleMSHA 0405616Construction Sand and GravelSurfaceAbandonedStatus date: 09/20/2007Cobalt CrushingReported operatorLee W HallReported controllerProduction / employmentSafety recordsView source coverage →
Snow White MineKern, CANear MojaveMSHA 0405938Clay, Ceramic, Refractory Mnls.SurfaceAbandonedStatus date: 03/31/2020VM Buyer LLCReported operatorRSP MineralsReported controllerProduction / employmentSafety recordsView source coverage →
Soboba PitRiverside, CAMSHA 0404690Construction Sand and GravelSurfaceAbandonedStatus date: 07/02/1992Boral Resources IncReported operatorBoral LimitedReported controllerNeither history importedView source coverage →
Soboba PlantRiverside, CANear San JacintoMSHA 0404923Construction Sand and GravelSurfaceAbandonedStatus date: 05/17/2006San Jacinto Aggregates IncReported operatorJim BroylesReported controllerProduction / employmentSafety recordsView source coverage →
Soda Rock Pit And MillSonoma, CAMSHA 0401922Construction Sand and GravelSurfaceAbandonedStatus date: 05/09/1991H G I Sand & Gravel IncReported operatorGroom Harold HReported controllerNeither history importedView source coverage →
Soda Rock Pit And Mill No 2Sonoma, CAMSHA 0404220Construction Sand and GravelSurfaceAbandonedStatus date: 08/09/1982H G I Sand & Gravel IncReported operatorGroom Harold HReported controllerNeither history importedView source coverage →
Soledad CanyonLos Angeles, CAMSHA 0401746Construction Sand and GravelSurfaceAbandonedStatus date: 08/01/1991Curtis Sand & GravelReported operatorCanyon Country EnterprisesReported controllerNeither history importedView source coverage →
Soledad EastKern, CAMSHA 0404489Gold OreUndergroundAbandonedStatus date: 08/01/1988Edco Mining CompanyReported operatorGroves Edward-James FosterReported controllerNeither history importedView source coverage →
Soledad QuarryMonterey, CANear SoledadMSHA 0404906Crushed, Broken Stone NECSurfaceAbandonedStatus date: 05/08/2008Syar Industries IncReported operatorJames M SyarReported controllerProduction / employmentSafety recordsView source coverage →
Sol WoodSierra, CAMSHA 0405199Gold OreUndergroundAbandonedStatus date: 10/18/1993Sol Wood Mine Company IncReported operatorSikaman Gold Resources LtdReported controllerNeither history importedView source coverage →
Solwoods MineSierra, CAMSHA 0404309Gold OreUndergroundAbandonedStatus date: 08/30/1983Solwoods Mine CompanyReported operatorSolwoods Mine CompanyReported controllerNeither history importedView source coverage →
Somis PitVentura, CAMSHA 0401951Construction Sand and GravelSurfaceAbandonedStatus date: 01/12/1990Somis Sand & Rock IncReported operatorSmith David DReported controllerNeither history importedView source coverage →
Sonoma Rock CompanySonoma, CANear sonomaMSHA 0404988Crushed, Broken Stone NECSurfaceAbandonedStatus date: 12/31/2005Sonoma Rock CompanyReported operatorSundt CorpReported controllerProduction / employmentSafety recordsView source coverage →
Sonora Black QuarryTuolumne, CAMSHA 0402350Crushed, Broken Stone NECSurfaceAbandonedStatus date: 03/17/1978Sonora Aggregates CorpReported operatorFilippi LReported controllerNeither history importedView source coverage →
Sonora Green QuarryCalaveras, CAMSHA 0402349Crushed, Broken Stone NECSurfaceAbandonedStatus date: 06/17/1980Bedford AggregatesReported operatorGeorge BedfordReported controllerNeither history importedView source coverage →
Sonora Mill And QuarriesTuolumne, CAMSHA 0402351Crushed, Broken Stone NECFacilityAbandonedStatus date: 08/05/1991Sonora Aggregates CorpReported operatorFilippi LReported controllerNeither history importedView source coverage →
Sonora White QuarryTuolumne, CAMSHA 0400272Crushed, Broken MarbleSurfaceAbandonedStatus date: 03/17/1978Sonora Aggregates CorpReported operatorFilippi LReported controllerNeither history importedView source coverage →
Sonora Yellow QuarryCalaveras, CAMSHA 0402348Crushed, Broken Stone NECSurfaceAbandonedStatus date: 03/17/1978Sonora Aggregates CorpReported operatorFilippi LReported controllerNeither history importedView source coverage →
Sorrento PitSan Diego, CAMSHA 0401952Construction Sand and GravelSurfaceAbandonedStatus date: 12/31/1991Sorrento Ready Mix IncReported operatorHenry F HunteReported controllerNeither history importedView source coverage →
South PitModoc, CANear ALTURAS, CAMSHA 0405431Construction Sand and GravelSurfaceAbandonedStatus date: 05/16/2008Eagle Peak Rock and PavingReported operatorTony CruseReported controllerProduction / employmentSafety recordsView source coverage →
SOUTHWEST WEAR PARTS CO., INC.Los Angeles, CANear IRWINDALEMSHA 0405921Construction Sand and GravelFacilityAbandonedStatus date: 02/04/2022SOUTHWEST WEAR PARTS CO., INCReported operatorGreg ShadeReported controllerProduction / employmentSafety recordsView source coverage →
Spaletta QuarrySonoma, CAMSHA 0405000Construction Sand and GravelSurfaceAbandonedStatus date: 08/09/1993Spaletta RanchReported operatorSpaletta RalphReported controllerNeither history importedView source coverage →

Take the research further

Acquisition & reuse

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 ↗

Reclamation projects

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.