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 |
|---|---|---|---|---|
| Truax PitSiskiyou, CANear McDoelMSHA 0405827 | Sand, Industrial NECSurface | AbandonedStatus date: 10/11/2011 | J F Shea Construction IncReported operatorPeter Shea JrReported controller | Production / employmentSafety recordsView source coverage → |
| Truckee QuarryNevada, CANear TruckeeMSHA 0404275 | Construction Sand and GravelSurface | AbandonedStatus date: 03/13/2025 | Teichert AggregatesReported operatorTeichert IncReported controller | Production / employmentSafety recordsView source coverage → |
| Truck VillageSiskiyou, CANear Mt. ShastaMSHA 0405607 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 04/08/2010 | Darrah Logging, Inc.Reported operatorKeith G DarrahReported controller | Production / employmentSafety recordsView source coverage → |
| TruroPlacer, CAMSHA 0404400 | Gold OreUnderground | AbandonedStatus date: 10/14/1981 | Wendy Christine Mining CompanyReported operatorWendy Christine Mining CompanyReported controller | Neither history importedView source coverage → |
| Tulare Rock CompanyTulare, CAMSHA 0401754 | Construction Sand and GravelSurface | AbandonedStatus date: 08/08/1979 | Oildale Ready MixReported operatorCalvin Cheek; Alvin CheekReported controller | Neither history importedView source coverage → |
| Tullis & Associates-Portable PlantShasta, CAMSHA 0404935 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 05/10/1989 | Tullis & Associates IncReported operatorLyle TullisReported controller | Neither history importedView source coverage → |
| Tungsten Peak MineKern, CAMSHA 0404134 | Tungsten OreUnderground | AbandonedStatus date: 05/04/1979 | Graham & Associates IncReported operatorMarker Ron S & Lawrence GrahamReported controller | Neither history importedView source coverage → |
| Tungsten Springs MineSan Bernardino, CAMSHA 0405009 | Tungsten OreUnderground | AbandonedStatus date: 09/20/1989 | Tungsten Springs Investment Group LtdReported operatorChristiansen Scott & Craig WebergReported controller | Neither history importedView source coverage → |
| Tungsten Springs MineSan Bernardino, CAMSHA 0405083 | Tungsten OreSurface | AbandonedStatus date: 12/26/1990 | Tungsten Springs Investment Group LtdReported operatorChristiansen Scott & Craig WebergReported controller | Neither history importedView source coverage → |
| TURLOCK ROCKMerced, CAMSHA 0401991 | Construction Sand and GravelSurface | AbandonedStatus date: 03/23/1998 | Turlock Rock Company IncReported operatorBlaker JessReported controller | Neither history importedView source coverage → |
| Turner PitLassen, CANear WendelMSHA 0405814 | Sand, Industrial NECSurface | AbandonedStatus date: 01/14/2011 | Al Pombo, IncReported operatorAl PomboReported controller | Production / employmentView source coverage → |
| Twain Enterprises IncorporatedPlumas, CAMSHA 0404969 | Construction Sand and GravelSurface | AbandonedStatus date: 06/07/1989 | Twain Enterprises IncReported operatorTwain Enterprises IncReported controller | Neither history importedView source coverage → |
| Twin BridgesSonoma, CANear Sea RanchMSHA 0402786 | Construction Sand and GravelSurface | AbandonedStatus date: 11/29/2010 | Bed Rock Products IncReported operatorKaren J Hay; William G HayReported controller | Production / employmentSafety recordsView source coverage → |
| TWIN CREEKS SPREADING GROUNDSan Bernardino, CAMSHA 0402253 | Construction Sand and GravelSurface | AbandonedStatus date: 09/07/2000 | North County Sand & Gravel IncReported operatorMike J LaPagliaReported controller | Production / employmentSafety recordsView source coverage → |
| Twin Oaks PitSan Diego, CAMSHA 0403849 | Crushed, Broken GraniteSurface | AbandonedStatus date: 07/21/1983 | Twin Oaks Engineering IncReported operatorTwin Oaks Engineering IncReported controller | Neither history importedView source coverage → |
| Twin SistersNevada, CAMSHA 0404591 | Gold OreUnderground | AbandonedStatus date: 08/19/1991 | Twin Sisters MineReported operatorMickelson JoyReported controller | Neither history importedView source coverage → |
| Twin Sisters MineNevada, CANear Grass ValleyMSHA 0405944 | Gold OreUnderground | AbandonedStatus date: 11/25/2019 | J5 AU LLCReported operatorJohnny Carr; John A Lang; JR CarrReported controller | Neither history importedView source coverage → |
| TXI-Port Costa PlantContra Costa, CANear Port CostaMSHA 0400599 | Common Clays NECSurface | AbandonedStatus date: 05/27/2008 | Pacific Custom Materials IncReported operatorTexas Industries IncReported controller | Production / employmentSafety recordsView source coverage → |
| TXI-Riverside CementSan Bernardino, CANear Oro GrandeMSHA 0405557 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 10/01/2015 | Ron Harriman's Loader ServiceReported operatorRonnie HarrimanReported controller | Production / employmentSafety recordsView source coverage → |
| Ukiah PlantMendocino, CAMSHA 0405058 | Construction Sand and GravelSurface | AbandonedStatus date: 11/16/1992 | Shamrock Materials IncReported operatorEugene B CeccottiReported controller | Neither history importedView source coverage → |
| Underground Seneca PropertiesPlumas, CAMSHA 0404373 | Gold OreUnderground | AbandonedStatus date: 04/15/1986 | Hilltop Mining Company IncReported operatorAnders PeterReported controller | Neither history importedView source coverage → |
| Union MineCalaveras, CAMSHA 0403719 | Gold OreUnderground | AbandonedStatus date: 11/30/1978 | Joseph FolsomReported operatorJoseph FolsomReported controller | Neither history importedView source coverage → |
| UNIVERSITY - SAN MARCOS QUARRYSan Diego, CANear San MarcosMSHA 0404894 | Construction Sand and GravelSurface | AbandonedStatus date: 03/10/2008 | Hanson Aggregates Pacific Southwest IncReported operatorHeidelberg Materials AGReported controller | Production / employmentSafety recordsView source coverage → |
| Upland Mill & QuarrySan Bernardino, CAMSHA 0401900 | Construction Sand and GravelSurface | AbandonedStatus date: 04/26/1984 | Pacific Rock & Gravel CompanyReported operatorPacific Rock & Gravel CompanyReported controller | Neither history importedView source coverage → |
| Upland PlantLos Angeles, CANear UplandMSHA 0402828 | Construction Sand and GravelSurface | AbandonedStatus date: 10/12/2010 | Holliday Rock CompanyReported operatorPenny J HollidayReported controller | Production / employmentSafety recordsView source coverage → |
| UPPER DEMARIA MINEPlacer, CAMSHA 0404991 | Gold OreUnderground | AbandonedStatus date: 01/31/2000 | Jessica Mining Company LlcReported operatorBarry Yampol; David YampolReported controller | Neither history importedView source coverage → |
| Upper Dry Creek Slate MineAmador, CANear drytownMSHA 0405410 | Crushed, Broken SlateSurface | AbandonedStatus date: 03/13/2025 | Horseshoe A Mining CompanyReported operatorMatulich Ronald & LindaReported controller | Production / employmentSafety recordsView source coverage → |
| Upper Spanish MineNevada, CAMSHA 0404269 | Barite Barium OreSurface | AbandonedStatus date: 10/23/1987 | Robinson Enterprises IncReported operatorLowell RobinsonReported controller | Neither history importedView source coverage → |
| URP Portable 1Los Angeles, CANear Newberry SpringsMSHA 0405842 | Construction Sand and GravelSurface | AbandonedStatus date: 11/02/2012 | United Rock ProductsReported operatorColas S AReported controller | Production / employmentView source coverage → |
| U S Bureau Of Reclamation PitsImperial, CAMSHA 0404404 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 06/17/1985 | U S Bureau Of ReclamationReported operatorUnited States GovernmentReported controller | Neither history importedView 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.