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 |
|---|---|---|---|---|
| TIMM MINEEl Dorado, CANear Garden ValleyMSHA 0402459 | Gold OreUnderground | AbandonedStatus date: 01/25/2017 | Lamplight, IncReported operatorCole E McGowanReported controller | Production / employmentSafety recordsView source coverage → |
| T-K Springs QuarryLassen, CANear Herlong, CAMSHA 0405844 | Construction Sand and GravelSurface | AbandonedStatus date: 04/30/2013 | Turn-Key Construction Services, Inc.Reported operatorJerry E McCaslandReported controller | Production / employmentView source coverage → |
| Tolbert MineSanta Barbara, CAMSHA 0403029 | Misc. Nonmetallic Mnls. NECSurface | AbandonedStatus date: 03/26/1992 | Grefco IncReported operatorDicalite Management Group LLCReported controller | Neither history importedView source coverage → |
| TONKCO-HARLOWRiverside, CAMSHA 0405341 | Construction Sand and GravelSurface | AbandonedStatus date: 03/15/1999 | Tonkco CorpReported operatorMichael TonkinsonReported controller | Neither history importedView source coverage → |
| TOURMALINE KING MINESan Diego, CANear PalaMSHA 0405573 | GemstonesUnderground | AbandonedStatus date: 09/09/2024 | San Diego Mining CorpReported operatorScott Lothair Ritchie; Kiel Alexander SnyderReported controller | Production / employmentSafety recordsView source coverage → |
| TOURMALINE QUEEN MINESan Diego, CAMSHA 0405466 | GemstonesUnderground | AbandonedStatus date: 05/03/2001 | San Diego Mining CompanyReported operatorScott L Ritchie; Erik M CordovaReported controller | Production / employmentView source coverage → |
| TOYON MILLCalaveras, CAMSHA 0404490 | TalcFacility | AbandonedStatus date: 01/15/1998 | Western SourceReported operatorRio Tinto GroupReported controller | Neither history importedView source coverage → |
| Trabuco Canyon PlantOrange, CAMSHA 0400542 | Common Clays NECSurface | AbandonedStatus date: 10/12/1978 | California Non-MetallicsReported operatorCalifornia Non-MetallicsReported controller | Neither history importedView source coverage → |
| Tracy Kerlinger PlantSan Joaquin, CANear TracyMSHA 0401895 | Construction Sand and GravelSurface | AbandonedStatus date: 03/23/2021 | CEMEX Construction Materials Pacific, LLCReported operatorCemex S AReported controller | Production / employmentSafety recordsView source coverage → |
| Tracy PitSan Joaquin, CANear TracyMSHA 0404345 | Construction Sand and GravelSurface | AbandonedStatus date: 06/15/2009 | Granite Construction CoReported operatorGranite Construction IncReported controller | Production / employmentSafety recordsView source coverage → |
| Tracy PlantYolo, CANear EspartoMSHA 0401972 | Construction Sand and GravelSurface | AbandonedStatus date: 01/07/2013 | Teichert AggregatesReported operatorTeichert IncReported controller | Production / employmentSafety recordsView source coverage → |
| Trail ClaimEl Dorado, CAMSHA 0404046 | Gold OreUnderground | AbandonedStatus date: 08/10/1982 | Youngquist Mining CompanyReported operatorTed YoungquistReported controller | Neither history importedView source coverage → |
| TREASURE CANYON LODE MINESPlumas, CANear greenvilleMSHA 0405259 | Gold OreUnderground | AbandonedStatus date: 09/23/2002 | Treasure Canyon Enterprises IncReported operatorBeatrice I SandersReported controller | Production / employmentSafety recordsView source coverage → |
| Trinity MineInyo, CAMSHA 0405109 | TalcUnderground | AbandonedStatus date: 05/10/1991 | Okuniewicz Mining CompanyReported operatorOkuniewicz Michael Stanley & Michael StephenReported controller | Neither history importedView source coverage → |
| TRINITY MINETrinity, CAMSHA 0405291 | Gold OreUnderground | AbandonedStatus date: 01/26/2001 | Canadian Reserve IncReported operatorSeine River Resources IncReported controller | Production / employmentSafety recordsView source coverage → |
| Trinity QuarrySonoma, CAMSHA 0402352 | Misc. Nonmetallic Mnls. NECSurface | AbandonedStatus date: 08/09/1982 | Trinity Quarries IncReported operatorGeneral Portland IncReported controller | Neither history importedView source coverage → |
| Trinity QuarrySonoma, CAMSHA 0404975 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 07/29/1991 | Bob Ford & SonReported operatorBob Ford; Rob FordReported controller | Neither history importedView source coverage → |
| Trinity QuarryTrinity, CAMSHA 0404984 | Gold OreSurface | AbandonedStatus date: 03/31/1993 | Gordenker Turkey Farms IncReported operatorGordenker AllanReported controller | Neither history importedView source coverage → |
| Trinity Rock Pit And MillSonoma, CAMSHA 0404210 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 08/09/1982 | Trinity Rock CompanyReported operatorTrinity Rock CompanyReported controller | Neither history importedView source coverage → |
| Triple Pocket MineSierra, CANear DownievilleMSHA 0405856 | Gold OreUnderground | AbandonedStatus date: 10/20/2014 | Fred AndersonReported operatorFred H. AndersonReported controller | Production / employmentSafety recordsView source coverage → |
| Tri-Valley (Chen) PitRiverside, CANear Lake ElsinoreMSHA 0405639 | Construction Sand and GravelSurface | AbandonedStatus date: 07/30/2005 | Pacific Clay Products, Inc.Reported operatorDavid H MurdockReported controller | Production / employmentView source coverage → |
| T-RockInyo, CANear TronaMSHA 0405882 | Sand, Industrial NECSurface | AbandonedStatus date: 04/20/2015 | T-Rock Products IncReported operatorDon Ward; John MartinezReported controller | Neither history importedView source coverage → |
| Trona Lime ProjectSan Bernardino, CAMSHA 0405121 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 02/13/1995 | H M Holloway IncReported operatorEstate of Dale Knox; Equity Directions IncReported controller | Neither history importedView source coverage → |
| Trona MillSan Bernardino, CAMSHA 0404122 | Construction Sand and GravelFacility | AbandonedStatus date: 09/12/1980 | Cal-Ci-Co Rock Company IncReported operatorChris E Babcock; Wallace K LoveReported controller | Neither history importedView source coverage → |
| Trona MineSan Bernardino, CAMSHA 0403009 | Sodium CompoundsSurface | AbandonedStatus date: 09/04/1980 | Kerr-Mc Gee Chemical CorpReported operatorKerr-McGee CorpReported controller | Neither history importedView source coverage → |
| Trona PlantSan Bernardino, CAMSHA 0401602 | Salt, Brine EvaporatedFacility | AbandonedStatus date: 05/21/1982 | Pacific Salt & Cemical CompanyReported operatorPacific Salt & Cemical CompanyReported controller | Neither history importedView source coverage → |
| Tropico Gold MineKern, CAMSHA 0404607 | Gold OreUnderground | AbandonedStatus date: 10/05/1983 | Shell Oil CompanyReported operatorShell Oil CompanyReported controller | Neither history importedView source coverage → |
| Tropico MillKern, CAMSHA 0404875 | Gold OreFacility | AbandonedStatus date: 06/01/1990 | Edco Mining CompanyReported operatorGroves Edward-James FosterReported controller | Neither history importedView source coverage → |
| TRP-Irvine Lake PlantOrange, CANear Silverado CanyonMSHA 0405277 | Construction Sand and GravelSurface | AbandonedStatus date: 01/02/2003 | Calmat CompanyReported operatorVulcan Materials CompanyReported controller | Production / employmentSafety recordsView source coverage → |
| TRP-Soledad Canyon PlantLos Angeles, CANear Canyon CountryMSHA 0401889 | Construction Sand and GravelSurface | AbandonedStatus date: 11/05/2010 | Triangle Rock ProductsReported operatorVulcan Materials CompanyReported 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.