| Three BellLarimer, COMSHA 0503960 | Construction Sand and GravelSurface | AbandonedStatus date: 07/07/1988 | Sterling Paving CompanyReported operatorRedland PlcReported controller | Neither history importedView source coverage → |
| Three B SGilpin, COMSHA 0503708 | Gold OreUnderground | AbandonedStatus date: 04/30/1984 | Silver Creek Mining CompanyReported operatorClark Hardy-Waykin FerrisReported controller | Neither history importedView source coverage → |
| THUNDER BIRD GRIZZLYMontezuma, COMSHA 0504626 | Construction Sand and GravelSurface | AbandonedStatus date: 01/08/1999 | Nielsons IncReported operatorNielsons Holding CompanyReported controller | Production / employmentView source coverage → |
| Thunderbird Wash Plant/Eagle Brand SandMontezuma, CONear DOLORESMSHA 0504763 | Construction Sand and GravelSurface | AbandonedStatus date: 08/10/2017 | Stone Sand & Gravel, LLCReported operatorDaren R Stone; Kathy J StoneReported controller | Production / employmentSafety recordsView source coverage → |
| ThunderboltMontrose, COMSHA 0503240 | Uranium OreUnderground | AbandonedStatus date: 08/07/1979 | Union Carbide CorpReported operatorUnion Carbide CorpReported controller | Neither history importedView source coverage → |
| Thunder MountainFremont, COMSHA 0500429 | GypsumSurface | AbandonedStatus date: 07/19/1990 | Lionelle GroupReported operatorLionelle Joe EReported controller | Neither history importedView source coverage → |
| Tiger RunSummit, COMSHA 0503677 | Construction Sand and GravelSurface | AbandonedStatus date: 08/19/1985 | Flatiron Paving CompanyReported operatorFlatiron Paving CompanyReported controller | Neither history importedView source coverage → |
| Tiger TimberTeller, COMSHA 0504392 | Construction Sand and GravelSurface | AbandonedStatus date: 10/03/1991 | Tiger Timber IncReported operatorHaughrey Frank HReported controller | Neither history importedView source coverage → |
| Timmerman/WellsWeld, CONear GillMSHA 0505035 | Construction Sand and GravelSurface | AbandonedStatus date: 10/19/2018 | Wells Trucking LLCReported operatorSteven Wells; Josh WellsReported controller | Production / employmentView source coverage → |
| TimnathLarimer, COMSHA 0503255 | Construction Sand and GravelSurface | AbandonedStatus date: 01/11/1989 | Flatiron Paving CompanyReported operatorFlatiron Paving CompanyReported controller | Neither history importedView source coverage → |
| Timnath Pit-Wash PlantLarimer, CONear Fort CollinsMSHA 0504795 | Construction Sand and GravelSurface | AbandonedStatus date: 07/27/2004 | Don Kehn Construction, Inc.Reported operatorDon KehnReported controller | Neither history importedView source coverage → |
| Tipple #3 (Twenty Mile Coal Co)Routt, CONear Hayden, Co.MSHA 0503932 | Coal (Lignite)Facility | AbandonedStatus date: 11/25/1985 | Savage Coal Service CorpReported operatorSavage CompaniesReported controller | Neither history importedView source coverage → |
| Titan PitDouglas, COMSHA 0503042 | Construction Sand and GravelSurface | AbandonedStatus date: 09/13/1982 | Titan Sand & Gravel IncReported operatorTitan Sand & Gravel IncReported controller | Neither history importedView source coverage → |
| Titan Pit & PlantDouglas, COMSHA 0501977 | Construction Sand and GravelSurface | AbandonedStatus date: 08/09/1978 | H W Siddle IncReported operatorH W Siddle IncReported controller | Neither history importedView source coverage → |
| T-MecPark, COMSHA 0503980 | Gold OreSurface | AbandonedStatus date: 08/23/1985 | T-MecReported operatorT-MecReported controller | Neither history importedView source coverage → |
| Togo MineGilpin, COMSHA 0503653 | Gold OreUnderground | AbandonedStatus date: 07/03/1985 | Saratoga Mines IncReported operatorLarson Arden L--C E CarlsonReported controller | Neither history importedView source coverage → |
| Toltec & GrangerLa Plata, COMSHA 0504239 | Gold OreUnderground | AbandonedStatus date: 03/14/1988 | Toltec & Granger Mining CorpReported operatorNorton Floyd EReported controller | Neither history importedView source coverage → |
| Toltec & Granger MillMontrose, COMSHA 0504357 | Gold OreFacility | AbandonedStatus date: 08/04/1988 | Toltec & Granger Mining CorpReported operatorNorton Floyd EReported controller | Neither history importedView source coverage → |
| TomahDouglas, COMSHA 0503959 | Construction Sand and GravelSurface | AbandonedStatus date: 09/12/1988 | Asphalt Paving CompanyReported operatorJeffrey W Keller; John M KellerReported controller | Neither history importedView source coverage → |
| Tomahawk MineDelta, CONear EckertMSHA 0503005 | Coal (Bituminous)Surface | AbandonedStatus date: 09/20/1982 | Quinn Coal CompanyReported operatorSociete Nationale Elf AquitaineReported controller | Neither history importedView source coverage → |
| Tomahawk MineLarimer, COMSHA 0503577 | FeldsparSurface | AbandonedStatus date: 10/10/1980 | Pine Creek MiningReported operatorPine Creek MiningReported controller | Neither history importedView source coverage → |
| Tomichi Equipment PitGunnison, COMSHA 0504003 | Construction Sand and GravelSurface | AbandonedStatus date: 01/12/1987 | Tomichi Equipment CompanyReported operatorTomichi Equipment CompanyReported controller | Neither history importedView source coverage → |
| TopazSan Miguel, CONear Slick RockMSHA 0503613 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 05/18/2009 | Pinon Ridge Mining LLCReported operatorGeorge GlasierReported controller | Production / employmentSafety recordsView source coverage → |
| Top Of The World ProjectChaffee, COMSHA 0504351 | Gold OreSurface | AbandonedStatus date: 07/28/1989 | Xerarc Resources IncReported operatorXerarc Resources IncReported controller | Neither history importedView source coverage → |
| TorbynMesa, COMSHA 0501304 | Uranium OreUnderground | AbandonedStatus date: 05/28/1982 | Energy Fuels ResourcesReported operatorEnergy Fuels IncorporatedReported controller | Neither history importedView source coverage → |
| Tortorise PitLas Animas, COMSHA 0503699 | Construction Sand and GravelSurface | AbandonedStatus date: 07/08/1986 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| Tower Pit 2El Paso, COMSHA 0501036 | Construction Sand and GravelSurface | AbandonedStatus date: 02/21/1979 | Schmidt-Tiago Construction CompanyReported operatorWalter R SchmidtReported controller | Neither history importedView source coverage → |
| T-Pit MinePark, COMSHA 0503556 | Uranium-Vanadium OreSurface | AbandonedStatus date: 05/17/1982 | Urania Exploration IncReported operatorUrania Exploration IncReported controller | Neither history importedView source coverage → |
| T P T Land CoAdams, COMSHA 0503416 | Construction Sand and GravelSurface | AbandonedStatus date: 10/30/1980 | T P T Land CompanyReported operatorT P T Land CompanyReported controller | Neither history importedView source coverage → |
| Tract C-ARio Blanco, COMSHA 0503131 | Oil ShaleSurface | AbandonedStatus date: 07/21/1988 | Rio Blanco Oil Shale Company IncReported operatorRio Blanco Oil Shale Company IncReported controller | Neither history importedView source coverage → |