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 |
|---|---|---|---|---|
| Sylvester Gulch No 1Gunnison, CONear Somerset, CoMSHA 0504603 | Coal (Bituminous)Underground | AbandonedStatus date: 06/22/2000 | Frontier-Kemper Constructors IncReported operatorDeilmann-Haniel & Maschinen-Und Stahlbau Gmbh et aReported controller | Production / employmentSafety recordsView source coverage → |
| Sylvester Gulch Test AuditGunnison, COMSHA 0502781 | Coal (Bituminous)Underground | AbandonedStatus date: 10/07/1976 | Atlantic Richfield CompanyReported operatorAtlantic Richfield CompanyReported controller | Neither history importedView source coverage → |
| Tabernash PitGrand, COMSHA 0503630 | Construction Sand and GravelSurface | AbandonedStatus date: 06/29/1983 | Morrow & Sons IncReported operatorRobert L MorrowReported controller | Neither history importedView source coverage → |
| Table Mountain Quarries IncorporatedFremont, COMSHA 0503806 | Construction Sand and GravelSurface | AbandonedStatus date: 03/07/1986 | Table Mountain Quarries IncReported operatorVern ToewsReported controller | Neither history importedView source coverage → |
| Taft Hill PitLarimer, COMSHA 0503823 | Construction Sand and GravelSurface | AbandonedStatus date: 05/24/1988 | Loveland Excavating CompanyReported operatorRichard ConnellReported controller | Neither history importedView source coverage → |
| TALLAHASSEE PITFremont, COMSHA 0504636 | Construction Sand and GravelSurface | AbandonedStatus date: 05/21/2001 | Fred Lowry & Jerald A SeifertReported operatorFred Lowry; Jerald A SeifertReported controller | Production / employmentView source coverage → |
| Taylor Gulch WestFremont, COMSHA 0504472 | Crushed, Broken Limestone NECUnderground | AbandonedStatus date: 12/06/1993 | Calco IncReported operatorTusco IncReported controller | Neither history importedView source coverage → |
| TBS 2Boulder, CONear LyonsMSHA 0504857 | Dimension Stone NECSurface | AbandonedStatus date: 03/28/2023 | T Bone StoneReported operatorBill H TenoreReported controller | Production / employmentSafety recordsView source coverage → |
| Teets-StelterBoulder, COMSHA 0503252 | Construction Sand and GravelSurface | AbandonedStatus date: 06/17/1981 | Flatiron Sand & Gravel CompanyReported operatorFlatiron Paving CompanyReported controller | Neither history importedView source coverage → |
| Telegraph MineGilpin, COMSHA 0502837 | Gold OreUnderground | AbandonedStatus date: 08/26/1985 | Telegraph Mining Company IncReported operatorTelegraph Mining Company IncReported controller | Neither history importedView source coverage → |
| TELLER COUNTY SCREENTeller, CONear Woodland ParkMSHA 0504570 | Construction Sand and GravelSurface | AbandonedStatus date: 03/08/2005 | Teller County Road & Bridge DepartmentReported operatorTeller County-CoReported controller | Production / employmentSafety recordsView source coverage → |
| Teller County Screen #2Teller, CONear DivideMSHA 0504598 | Construction Sand and GravelSurface | AbandonedStatus date: 01/25/2023 | Teller County Road & Bridge DepartmentReported operatorTeller County-CoReported controller | Production / employmentSafety recordsView source coverage → |
| TellurideMontrose, COMSHA 0501715 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 12/23/1981 | Taminco IncReported operatorTaylor RobertReported controller | Neither history importedView source coverage → |
| Temple PitRoutt, CONear HaydenMSHA 0504868 | Construction Sand and GravelSurface | AbandonedStatus date: 07/10/2008 | Temple Construction, Inc.Reported operatorDennis TempleReported controller | Production / employmentSafety recordsView source coverage → |
| TEREX WARRIOR #5Weld, CONear Ft. LuptonMSHA 0505069 | Construction Sand and GravelSurface | AbandonedStatus date: 02/01/2022 | BurncoReported operatorBurnco Rock Products LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Terror Creek LoadoutDelta, CONear PaoniaMSHA 0503818 | Coal (Bituminous)Facility | AbandonedStatus date: 08/04/2015 | Oxbow Mining, LLCReported operatorOxbow Carbon LLCReported controller | Production / employmentSafety recordsView source coverage → |
| Tezak #2 PitFremont, CONear CotopaxiMSHA 0505013 | Construction Sand and GravelSurface | AbandonedStatus date: 12/03/2014 | Tezak Stone & Aggregate Supply IncReported operatorMichael A TezakReported controller | Production / employmentView source coverage → |
| T&F InvestmentsMesa, COMSHA 0503910 | Construction Sand and GravelSurface | AbandonedStatus date: 05/30/1985 | Corn Construction CompanyReported operatorLarry W CornReported controller | Neither history importedView source coverage → |
| The CrusherProwers, CONear N/AMSHA 0503646 | Construction Sand and GravelSurface | AbandonedStatus date: 07/16/2003 | Carder IncReported operatorRon D PetersonReported controller | Safety recordsView source coverage → |
| The Gleason PitMontrose, CONear RedvaleMSHA 0504539 | Construction Sand and GravelSurface | AbandonedStatus date: 05/08/2012 | J E Sutherland Construction, LLCReported operatorJim E SutherlandReported controller | Production / employmentSafety recordsView source coverage → |
| The Mountain TopOuray, CONear OurayMSHA 0504908 | Gold OreUnderground | AbandonedStatus date: 08/11/2008 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| The PitLas Animas, COMSHA 0504376 | Construction Sand and GravelSurface | AbandonedStatus date: 09/06/1989 | Trinidad Redi-MixReported operatorTrinidad Redi-MixReported controller | Neither history importedView source coverage → |
| Thoe Agg Portable #1Montrose, COMSHA 0504005 | Construction Sand and GravelSurface | AbandonedStatus date: 08/02/1989 | Thoe AggregatesReported operatorThoe AggregatesReported controller | Neither history importedView source coverage → |
| Thomas & AnthonyLake, COMSHA 0503864 | Silver OreUnderground | AbandonedStatus date: 09/21/1984 | Windsor Resources (Us) LtdReported operatorWindsor Resources IncReported controller | Neither history importedView source coverage → |
| Thomas PitLa Plata, COMSHA 0503822 | Construction Sand and GravelSurface | AbandonedStatus date: 10/27/1983 | Animas Aggregates IncReported operatorCox Thomas EReported controller | Neither history importedView source coverage → |
| Thompson Creek No 1Pitkin, CONear CarbondaleMSHA 0502658 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 09/01/1986 | Snowmass Coal CompanyReported operatorRoaring Fork Coal Corp & Lark Mng CorpReported controller | Neither history importedView source coverage → |
| Thompson Creek No 3Pitkin, CONear CarbondaleMSHA 0502662 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 09/01/1986 | Snowmass Coal CompanyReported operatorRoaring Fork Coal Corp & Lark Mng CorpReported controller | Neither history importedView source coverage → |
| Thompson PitRoutt, COMSHA 0502643 | Construction Sand and GravelSurface | AbandonedStatus date: 06/17/1981 | W R Hall Construction CompanyReported operatorHall W TReported controller | Neither history importedView source coverage → |
| ThorntonMontrose, COMSHA 0501311 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 06/30/1983 | Rajah Ventures LtdReported operatorSwerdfeger R MReported controller | Neither history importedView source coverage → |
| THORNTON PLANTAdams, CONear HendersonMSHA 0503301 | Construction Sand and GravelSurface | AbandonedStatus date: 05/23/2016 | Aggregate Industries WCR IncReported operatorAmrize LtdReported 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.