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

Browse all states →

Reset

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
BLM CAMC CLAIM #'S:48944THR48960Riverside, CAMSHA 0405305Crushed, Broken Limestone NECSurfaceAbandonedStatus date: 01/10/2000California Calcium Carbonate IncReported operatorLee NewhouseReported controllerNeither history importedView source coverage →
BloomfieldSonoma, CAMSHA 0402305Common ShaleSurfaceAbandonedStatus date: 08/09/1982Piombo CorpReported operatorFelix H SiriReported controllerNeither history importedView source coverage →
Bluebird Mine #1Trinity, CAMSHA 0404967Gold OreSurfaceAbandonedStatus date: 03/14/1990Ross MiningReported operatorRoss MiningReported controllerNeither history importedView source coverage →
Blue Eagle Lode MineKern, CANear kernMSHA 0404787Gold OreUndergroundAbandonedStatus date: 04/26/2021Blue Eagle Lode Mining Co.Reported operatorJohn C BurtonReported controllerProduction / employmentSafety recordsView source coverage →
BLUE LAKESierra, CAMSHA 0405297Gold OreSurfaceAbandonedStatus date: 08/06/1998Tom HallisReported operatorHallis TomReported controllerNeither history importedView source coverage →
Blue Lake Pit And MillHumboldt, CAMSHA 0404052Construction Sand and GravelSurfaceAbandonedStatus date: 07/20/1989Miller'S Backhoe & ExcavatingReported operatorRalph MillerReported controllerNeither history importedView source coverage →
Blue LeadButte, CAMSHA 0404769Construction Sand and GravelSurfaceAbandonedStatus date: 09/23/1994Nordic Industries IncReported operatorJens KarlshoejReported controllerNeither history importedView source coverage →
Blue Lead Gold MineNevada, CANear Grass ValleyMSHA 0405956Sand, CommonSurfaceAbandonedStatus date: 02/19/2025Operator not reportedReported operatorController not reportedReported controllerNeither history importedView source coverage →
Blue Lead MineNevada, CAMSHA 0403859Gold OreUndergroundAbandonedStatus date: 12/08/1989Jasper Construction Company IncReported operatorJasper Construction Company IncReported controllerNeither history importedView source coverage →
Blue Ledge MineEl Dorado, CAMSHA 0404283Gold OreUndergroundAbandonedStatus date: 03/12/1984Blue Ledge Mining CompanyReported operatorIgnatich Jerry & James WhitmoreReported controllerNeither history importedView source coverage →
Blue PlantYolo, CAMSHA 0404799Construction Sand and GravelSurfaceAbandonedStatus date: 12/22/1993Teichert AggregatesReported operatorTeichert IncReported controllerNeither history importedView source coverage →
Blue Point MineYuba, CAMSHA 0404938Construction Sand and GravelSurfaceAbandonedStatus date: 02/02/1994Micro-Gold EngineeringReported operatorGregory LewisReported controllerNeither history importedView source coverage →
BLUE POINT MINEYuba, CAMSHA 0405433Construction Sand and GravelSurfaceAbandonedStatus date: 08/12/2002Blue Point Rock ProductsReported operatorSteve Elder; Charles VertreesReported controllerProduction / employmentSafety recordsView source coverage →
Blue Range Placer MineSierra, CAMSHA 0404727Gold OreUndergroundAbandonedStatus date: 12/05/1984Underground Placer AssociatesReported operatorUnderground Placer AssociatesReported controllerNeither history importedView source coverage →
Blue Ridge QuarryMendocino, CANear HoplandMSHA 0405355Crushed, Broken Stone NECSurfaceAbandonedStatus date: 03/12/2025CalMat Co.Reported operatorVulcan Materials CompanyReported controllerProduction / employmentSafety recordsView source coverage →
Blue RockNapa, CANear RutherfordMSHA 0405519Construction Sand and GravelSurfaceAbandonedStatus date: 08/01/2012Don Wesner Inc.Reported operatorDon WesnerReported controllerProduction / employmentSafety recordsView source coverage →
BLUE ROCK QUARRYLake, CAMSHA 0405296Crushed, Broken Limestone NECSurfaceAbandonedStatus date: 11/30/1999Blue Rock QuarryReported operatorBob Ford; Rob FordReported controllerProduction / employmentView source coverage →
BLUE ROCK QUARRY IILake, CANear Lakeport, CAMSHA 0405404Construction Sand and GravelSurfaceAbandonedStatus date: 03/22/2004Blue Rock QuarryReported operatorBob Ford; Rob FordReported controllerProduction / employmentSafety recordsView source coverage →
Bob Silva ExcavationSiskiyou, CAMSHA 0404408Construction Sand and GravelSurfaceAbandonedStatus date: 08/09/1982Bob SilvaReported operatorSilva BobReported controllerNeither history importedView source coverage →
Boca QuarryNevada, CAMSHA 0404748Crushed, Broken Stone NECSurfaceAbandonedStatus date: 01/23/1991Hillsdale Rock CompanyReported operatorHenry Matoza JrReported controllerNeither history importedView source coverage →
Bogart MaterialsGlenn, CANear OrlandMSHA 0405527Crushed, Broken Stone NECSurfaceAbandonedStatus date: 08/13/2003Bogart ConstructionReported operatorDale R (Doc) BogartReported controllerProduction / employmentSafety recordsView source coverage →
Bol PitSan Diego, CAMSHA 0404117Construction Sand and GravelSurfaceAbandonedStatus date: 06/26/1979Bol Land Development CompanyReported operatorBol Land Development CompanyReported controllerNeither history importedView source coverage →
Bonanza KingTrinity, CAMSHA 0404753Gold OreUndergroundAbandonedStatus date: 03/18/1986Jefferson State Exploration & Development CoReported operatorAloisi FredReported controllerNeither history importedView source coverage →
Bonanza King MineSan Bernardino, CAMSHA 0404662Silver OreUndergroundAbandonedStatus date: 07/10/1984Weaco Resources LtdReported operatorBlack John-Steve RadvakReported controllerNeither history importedView source coverage →
BondurantMariposa, CAMSHA 0404491Gold OreUndergroundAbandonedStatus date: 09/15/1981Grant Exploration LtdReported operatorCrocker F WayneReported controllerNeither history importedView source coverage →
Bonny Doon QuarrySanta Cruz, CANear Davenport, CAMSHA 0400175Crushed, Broken Limestone NECSurfaceAbandonedStatus date: 02/09/2010CemexReported operatorCemex S AReported controllerProduction / employmentSafety recordsView source coverage →
Bonny Doon Shale Pit And MillSanta Cruz, CAMSHA 0401188Common ShaleSurfaceAbandonedStatus date: 04/23/1981Lone Star Industries IncReported operatorLone Star Industries IncReported controllerNeither history importedView source coverage →
Bonny PitInyo, CAMSHA 0401094TalcSurfaceAbandonedStatus date: 12/01/1983Pfizer IncReported operatorMinerals Technologies IncReported controllerNeither history importedView source coverage →
Boraxo MillInyo, CAMSHA 0401645Boron MineralsSurfaceAbandonedStatus date: 01/01/1979American Borate CompanyReported operatorRoscorp Inc; American Borate CorpReported controllerNeither history importedView source coverage →
Border PitSan Diego, CAMSHA 0404081Construction Sand and GravelSurfaceAbandonedStatus date: 02/10/1988Nelson & SloanReported operatorJames NelsonReported 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.