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
Taft PlantKern, CAMSHA 0404337Construction Sand and GravelSurfaceAbandonedStatus date: 12/15/1994General Production Service Of Ca IncReported operatorCharles E BeardReported controllerNeither history importedView source coverage →
Tahquitz Creek ProjectRiverside, CAMSHA 0405123Construction Sand and GravelSurfaceAbandonedStatus date: 02/04/1991E L Yeager Construction Company IncReported operatorSkanska ABReported controllerNeither history importedView source coverage →
TALC-OMEGA MINESan Bernardino, CAMSHA 0405352TalcSurfaceAbandonedStatus date: 07/26/2001Protech Minerals, LLCReported operatorPressed Down, Inc; Terry SuzukiReported controllerProduction / employmentSafety recordsView source coverage →
Tangle BlueTrinity, CAMSHA 0404755Gold OreUndergroundAbandonedStatus date: 03/18/1986Jefferson State Exploration & Development CoReported operatorAloisi FredReported controllerNeither history importedView source coverage →
Tapo Oyster ShellVentura, CAMSHA 0403763Crushed, Broken Limestone NECSurfaceAbandonedStatus date: 01/06/1987Tapo Oyster ShellReported operatorWilliam C BrooksReported controllerNeither history importedView source coverage →
Taylors Pit And MillMadera, CAMSHA 0401015PumiceSurfaceAbandonedStatus date: 05/05/1983California Industrial Minerals CompanyReported operatorMc Conaghy John WReported controllerNeither history importedView source coverage →
Tecopa Plant & Mill (Beck)San Bernardino, CAMSHA 0402509Iron OreSurfaceAbandonedStatus date: 11/10/1993Standard Industrial Minerals IncReported operatorRichard B HarmonReported controllerNeither history importedView source coverage →
Teddy Bear MineEl Dorado, CAMSHA 0404574Gold OreUndergroundAbandonedStatus date: 08/10/1984Teddy Bear Mining CompanyReported operatorGillespie Thomas AReported controllerNeither history importedView source coverage →
Tehachapi QuarryKern, CAMSHA 0404354Crushed, Broken Limestone NECSurfaceAbandonedStatus date: 01/31/1991Calaveras Portland Cement CompanyReported operatorCimenteries Cbr CementbedrijvenReported controllerNeither history importedView source coverage →
Telegraph MineSierra, CAMSHA 0402969Gold OreUndergroundAbandonedStatus date: 05/28/1986Telegraph Mining Company IncReported operatorRiley JackReported controllerNeither history importedView source coverage →
Telegraph MineSan Bernardino, CAMSHA 0404365Silver OreSurfaceAbandonedStatus date: 07/22/1983Cascade Energy & Metals CorpReported operatorWeston W DavidReported controllerNeither history importedView source coverage →
TELEGRAPH MINESierra, CANear DownievilleMSHA 0405100Gold OreUndergroundAbandonedStatus date: 06/28/2024Saddleback, LLCReported operatorTelegraph LLC; Amy PenningtonReported controllerProduction / employmentSafety recordsView source coverage →
Telestack Belt TC-421RPlumas, CANear SloatMSHA 2602881Construction Sand and GravelSurfaceAbandonedStatus date: 05/16/2023Joy EngineeringReported operatorRick JoyReported controllerProduction / employmentSafety recordsView source coverage →
Temecula #2Riverside, CANear FallbrookMSHA 0405584Sand, CommonSurfaceAbandonedStatus date: 07/11/2005GSIReported operatorGary IngramReported controllerProduction / employmentSafety recordsView source coverage →
Temecula SandSan Diego, CANear TemeculaMSHA 0405705Sand, CommonSurfaceAbandonedStatus date: 01/17/2007Perrault CorporationReported operatorChuck PerraultReported controllerProduction / employmentView source coverage →
Temescal Canyon Pit & MillRiverside, CAMSHA 0403651Construction Sand and GravelSurfaceAbandonedStatus date: 11/02/1992Boral Resources IncReported operatorBoral LimitedReported controllerNeither history importedView source coverage →
Templeton Hot PlantSan Luis Obispo, CAMSHA 0402690Construction Sand and GravelSurfaceAbandonedStatus date: 08/05/1988Madonna Construction CompanyReported operatorMadonna AlexReported controllerNeither history importedView source coverage →
Ten Mile Second CrossingMendocino, CAMSHA 0405244Construction Sand and GravelSurfaceAbandonedStatus date: 09/20/1995Baxman Gravel Company IncReported operatorSteven E BaxmanReported controllerNeither history importedView source coverage →
Terra Bella Quarry Tulare, CAMSHA 0405173Crushed, Broken Stone NECSurfaceAbandonedStatus date: 08/07/2000Granite Construction CompanyReported operatorGranite Construction IncReported controllerProduction / employmentSafety recordsView source coverage →
Texas Rock PlantSan Bernardino, CANear MentoneMSHA 0405529Crushed, Broken Stone NECSurfaceAbandonedStatus date: 05/19/2010Larry Jacinto Construction IncReported operatorLarry JacintoReported controllerProduction / employmentSafety recordsView source coverage →
The Rock PlantRiverside, CAMSHA 0404668Construction Sand and GravelSurfaceAbandonedStatus date: 05/09/1985Praise The Lord Rock & SandReported operatorPraise The Lord Rock & SandReported controllerNeither history importedView source coverage →
The Rock Yard - TRI, Inc.San Bernardino, CAMSHA 0400035Crushed, Broken Stone NECSurfaceAbandonedStatus date: 09/08/2000The Rock Yard - TRI, Inc.Reported operatorJanet M AuxierReported controllerSafety recordsView source coverage →
THE STANDARD GYPSUM MINEImperial, CAMSHA 0405304GypsumSurfaceAbandonedStatus date: 12/11/1997Eco SolutionsReported operatorHo Ho & R TorgersonReported controllerNeither history importedView source coverage →
Thompson MineInyo, CAMSHA 0402522Lead-Zinc OreUndergroundAbandonedStatus date: 12/01/1978Montecito Mining CompanyReported operatorMontecito Mining CompanyReported controllerNeither history importedView source coverage →
Three QueensPlacer, CAMSHA 0404478Gold OreUndergroundAbandonedStatus date: 07/16/1984Henry W MagorianReported operatorHenry W MargorianReported controllerNeither history importedView source coverage →
THREE QUEENS MINEPlacer, CAMSHA 0405380Gold OreUndergroundAbandonedStatus date: 08/01/2000Henry W MagorianReported operatorHenry W MargorianReported controllerNeither history importedView source coverage →
Thr Pit And MillTehama, CAMSHA 0401979Construction Sand and GravelSurfaceAbandonedStatus date: 04/04/1979Thr CompanyReported operatorThr CompanyReported controllerNeither history importedView source coverage →
Tidewater Pit & MillDel Norte, CAMSHA 0404903Construction Sand and GravelSurfaceAbandonedStatus date: 07/29/1994Tidewater Contractors IncReported operatorJess Fitzhugh; Dave BaldwinReported controllerNeither history importedView source coverage →
Tierra Tile PitImperial, CAMSHA 0404720Construction Sand and GravelSurfaceAbandonedStatus date: 06/30/1994Tierra TileReported operatorHoyt AltonReported controllerNeither history importedView source coverage →
TIMBUCTOO MINEYuba, CAMSHA 0405348Construction Sand and GravelSurfaceAbandonedStatus date: 08/04/2000Dan GarciaReported operatorDan GarciaReported controllerProduction / employmentView 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.