HISTORICAL SITES / RESEARCH DIRECTORY

Abandoned mines in Colorado

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.

2,230 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
Three BellLarimer, COMSHA 0503960Construction Sand and GravelSurfaceAbandonedStatus date: 07/07/1988Sterling Paving CompanyReported operatorRedland PlcReported controllerNeither history importedView source coverage →
Three B SGilpin, COMSHA 0503708Gold OreUndergroundAbandonedStatus date: 04/30/1984Silver Creek Mining CompanyReported operatorClark Hardy-Waykin FerrisReported controllerNeither history importedView source coverage →
THUNDER BIRD GRIZZLYMontezuma, COMSHA 0504626Construction Sand and GravelSurfaceAbandonedStatus date: 01/08/1999Nielsons IncReported operatorNielsons Holding CompanyReported controllerProduction / employmentView source coverage →
Thunderbird Wash Plant/Eagle Brand SandMontezuma, CONear DOLORESMSHA 0504763Construction Sand and GravelSurfaceAbandonedStatus date: 08/10/2017Stone Sand & Gravel, LLCReported operatorDaren R Stone; Kathy J StoneReported controllerProduction / employmentSafety recordsView source coverage →
ThunderboltMontrose, COMSHA 0503240Uranium OreUndergroundAbandonedStatus date: 08/07/1979Union Carbide CorpReported operatorUnion Carbide CorpReported controllerNeither history importedView source coverage →
Thunder MountainFremont, COMSHA 0500429GypsumSurfaceAbandonedStatus date: 07/19/1990Lionelle GroupReported operatorLionelle Joe EReported controllerNeither history importedView source coverage →
Tiger RunSummit, COMSHA 0503677Construction Sand and GravelSurfaceAbandonedStatus date: 08/19/1985Flatiron Paving CompanyReported operatorFlatiron Paving CompanyReported controllerNeither history importedView source coverage →
Tiger TimberTeller, COMSHA 0504392Construction Sand and GravelSurfaceAbandonedStatus date: 10/03/1991Tiger Timber IncReported operatorHaughrey Frank HReported controllerNeither history importedView source coverage →
Timmerman/WellsWeld, CONear GillMSHA 0505035Construction Sand and GravelSurfaceAbandonedStatus date: 10/19/2018Wells Trucking LLCReported operatorSteven Wells; Josh WellsReported controllerProduction / employmentView source coverage →
TimnathLarimer, COMSHA 0503255Construction Sand and GravelSurfaceAbandonedStatus date: 01/11/1989Flatiron Paving CompanyReported operatorFlatiron Paving CompanyReported controllerNeither history importedView source coverage →
Timnath Pit-Wash PlantLarimer, CONear Fort CollinsMSHA 0504795Construction Sand and GravelSurfaceAbandonedStatus date: 07/27/2004Don Kehn Construction, Inc.Reported operatorDon KehnReported controllerNeither history importedView source coverage →
Tipple #3 (Twenty Mile Coal Co)Routt, CONear Hayden, Co.MSHA 0503932Coal (Lignite)FacilityAbandonedStatus date: 11/25/1985Savage Coal Service CorpReported operatorSavage CompaniesReported controllerNeither history importedView source coverage →
Titan PitDouglas, COMSHA 0503042Construction Sand and GravelSurfaceAbandonedStatus date: 09/13/1982Titan Sand & Gravel IncReported operatorTitan Sand & Gravel IncReported controllerNeither history importedView source coverage →
Titan Pit & PlantDouglas, COMSHA 0501977Construction Sand and GravelSurfaceAbandonedStatus date: 08/09/1978H W Siddle IncReported operatorH W Siddle IncReported controllerNeither history importedView source coverage →
T-MecPark, COMSHA 0503980Gold OreSurfaceAbandonedStatus date: 08/23/1985T-MecReported operatorT-MecReported controllerNeither history importedView source coverage →
Togo MineGilpin, COMSHA 0503653Gold OreUndergroundAbandonedStatus date: 07/03/1985Saratoga Mines IncReported operatorLarson Arden L--C E CarlsonReported controllerNeither history importedView source coverage →
Toltec & GrangerLa Plata, COMSHA 0504239Gold OreUndergroundAbandonedStatus date: 03/14/1988Toltec & Granger Mining CorpReported operatorNorton Floyd EReported controllerNeither history importedView source coverage →
Toltec & Granger MillMontrose, COMSHA 0504357Gold OreFacilityAbandonedStatus date: 08/04/1988Toltec & Granger Mining CorpReported operatorNorton Floyd EReported controllerNeither history importedView source coverage →
TomahDouglas, COMSHA 0503959Construction Sand and GravelSurfaceAbandonedStatus date: 09/12/1988Asphalt Paving CompanyReported operatorJeffrey W Keller; John M KellerReported controllerNeither history importedView source coverage →
Tomahawk MineDelta, CONear EckertMSHA 0503005Coal (Bituminous)SurfaceAbandonedStatus date: 09/20/1982Quinn Coal CompanyReported operatorSociete Nationale Elf AquitaineReported controllerNeither history importedView source coverage →
Tomahawk MineLarimer, COMSHA 0503577FeldsparSurfaceAbandonedStatus date: 10/10/1980Pine Creek MiningReported operatorPine Creek MiningReported controllerNeither history importedView source coverage →
Tomichi Equipment PitGunnison, COMSHA 0504003Construction Sand and GravelSurfaceAbandonedStatus date: 01/12/1987Tomichi Equipment CompanyReported operatorTomichi Equipment CompanyReported controllerNeither history importedView source coverage →
TopazSan Miguel, CONear Slick RockMSHA 0503613Uranium-Vanadium OreUndergroundAbandonedStatus date: 05/18/2009Pinon Ridge Mining LLCReported operatorGeorge GlasierReported controllerProduction / employmentSafety recordsView source coverage →
Top Of The World ProjectChaffee, COMSHA 0504351Gold OreSurfaceAbandonedStatus date: 07/28/1989Xerarc Resources IncReported operatorXerarc Resources IncReported controllerNeither history importedView source coverage →
TorbynMesa, COMSHA 0501304Uranium OreUndergroundAbandonedStatus date: 05/28/1982Energy Fuels ResourcesReported operatorEnergy Fuels IncorporatedReported controllerNeither history importedView source coverage →
Tortorise PitLas Animas, COMSHA 0503699Construction Sand and GravelSurfaceAbandonedStatus date: 07/08/1986Colorado Department Of HighwaysReported operatorState Of ColoradoReported controllerNeither history importedView source coverage →
Tower Pit 2El Paso, COMSHA 0501036Construction Sand and GravelSurfaceAbandonedStatus date: 02/21/1979Schmidt-Tiago Construction CompanyReported operatorWalter R SchmidtReported controllerNeither history importedView source coverage →
T-Pit MinePark, COMSHA 0503556Uranium-Vanadium OreSurfaceAbandonedStatus date: 05/17/1982Urania Exploration IncReported operatorUrania Exploration IncReported controllerNeither history importedView source coverage →
T P T Land CoAdams, COMSHA 0503416Construction Sand and GravelSurfaceAbandonedStatus date: 10/30/1980T P T Land CompanyReported operatorT P T Land CompanyReported controllerNeither history importedView source coverage →
Tract C-ARio Blanco, COMSHA 0503131Oil ShaleSurfaceAbandonedStatus date: 07/21/1988Rio Blanco Oil Shale Company IncReported operatorRio Blanco Oil Shale Company IncReported 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.