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 |
|---|---|---|---|---|
| Deluca PitChaffee, COMSHA 0503162 | Construction Sand and GravelSurface | AbandonedStatus date: 08/12/1982 | Chaffee CountyReported operatorChaffee County-COReported controller | Neither history importedView source coverage → |
| Denco of Pagosa LLCArchuleta, CONear Pagosa SpringsMSHA 0504633 | Construction Sand and GravelSurface | AbandonedStatus date: 08/07/2003 | Denco of Pagosa LLCReported operatorDennis D WalkerReported controller | Production / employmentSafety recordsView source coverage → |
| Dennison PitMesa, COMSHA 0503936 | Construction Sand and GravelSurface | AbandonedStatus date: 12/14/1984 | Northern Gravel Processing IncReported operatorDubey ClarenceReported controller | Neither history importedView source coverage → |
| Denton StripRoutt, COMSHA 0502714 | Coal (Bituminous)Surface | AbandonedStatus date: 07/05/1977 | Milner Coal CorpReported operatorFulton Caesar & Charles A DentonReported controller | Neither history importedView source coverage → |
| Denver Fire ClayJefferson, COMSHA 0504049 | Common Clays NECSurface | AbandonedStatus date: 07/10/1991 | G C Bennetts & Sons IncReported operatorBennetts RonReported controller | Neither history importedView source coverage → |
| DeremoSan Miguel, COMSHA 0501786 | Uranium OreUnderground | AbandonedStatus date: 08/09/1991 | Umetco Minerals CorpReported operatorUnion Carbide CorpReported controller | Neither history importedView source coverage → |
| Dere PitGarfield, COMSHA 0503442 | Construction Sand and GravelSurface | AbandonedStatus date: 08/13/1982 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| Derr PitWeld, CONear GreeleyMSHA 0504955 | Construction Sand and GravelSurface | AbandonedStatus date: 10/21/2019 | Broken Arrow MiningReported operatorGlobal Recovery OneReported controller | Production / employmentSafety recordsView source coverage → |
| Destiny PitPark, CONear FairplayMSHA 0505084 | Gold OreSurface | AbandonedStatus date: 08/24/2026 | Gold Tamers LLCReported operatorJoe Widdison; Matt DonnellyReported controller | Production / employmentSafety recordsView source coverage → |
| Detroit City MinePark, CONear AlmaMSHA 0505056 | GemstonesUnderground | AbandonedStatus date: 08/23/2024 | Colorado Calumet Co IncReported operatorBryan K LeesReported controller | Production / employmentSafety recordsView source coverage → |
| De Vorss PitEl Paso, COMSHA 0503274 | Construction Sand and GravelSurface | AbandonedStatus date: 07/23/1979 | El Paso County Dept Of TransportationReported operatorEl Paso County-CoReported controller | Neither history importedView source coverage → |
| Dew Drop TunnelBoulder, COMSHA 0503828 | Gold OreUnderground | AbandonedStatus date: 07/11/1984 | Colorado Consolidated Metals CorpReported operatorPaul E DanioReported controller | Neither history importedView source coverage → |
| Dewell PitEl Paso, COMSHA 0503243 | Construction Sand and GravelSurface | AbandonedStatus date: 07/23/1979 | El Paso County Dept Of TransportationReported operatorEl Paso County-CoReported controller | Neither history importedView source coverage → |
| Diamond ShaftLake, COMSHA 0503883 | Silver OreUnderground | AbandonedStatus date: 03/19/1993 | Leadville CorpReported operatorRisk RobertReported controller | Neither history importedView source coverage → |
| DickensBoulder, COMSHA 0504182 | Construction Sand and GravelSurface | AbandonedStatus date: 09/18/1991 | Golden Gravel CompanyReported operatorStewart V GoldenReported controller | Neither history importedView source coverage → |
| Dickerson PitGunnison, CONear GunnisonMSHA 0503970 | Crushed, Broken GraniteSurface | AbandonedStatus date: 11/16/2016 | Gunnison Gravel & Earth Moving LLCReported operatorWarren O WilcoxReported controller | Production / employmentSafety recordsView source coverage → |
| DILLEY PORTABLE PLANTMorgan, CONear BrushMSHA 0504029 | Construction Sand and GravelSurface | AbandonedStatus date: 05/21/2009 | Dilley'S Sand & GravelReported operatorVernon DilleyReported controller | Production / employmentSafety recordsView source coverage → |
| Dill PitElbert, COMSHA 0503440 | Construction Sand and GravelSurface | AbandonedStatus date: 01/03/1980 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| DILTS QUARRYLarimer, COMSHA 0504573 | Construction Sand and GravelSurface | AbandonedStatus date: 07/26/1999 | Holcim (US), IncReported operatorHolcim LtdReported controller | Production / employmentView source coverage → |
| Disrict #3 Portable Plant #3Phillips, COMSHA 0504072 | Construction Sand and GravelSurface | AbandonedStatus date: 04/07/1986 | Phillips County Road DepartmentReported operatorPhillips County Road DepartmentReported controller | Neither history importedView source coverage → |
| Dist No 2 Gravel PitBoulder, COMSHA 0503147 | Construction Sand and GravelSurface | AbandonedStatus date: 08/16/1978 | Boulder County Road MaintenanceReported operatorBoulder County-CoReported controller | Neither history importedView source coverage → |
| District 1, 2, 3 Screen PlantYuma, CONear WrayMSHA 0504075 | Construction Sand and GravelSurface | AbandonedStatus date: 10/15/2010 | Yuma County Road DepartmentReported operatorYuma County-CoReported controller | Neither history importedView source coverage → |
| District #1 Burlington CoKit Carson, CONear BurlingtonMSHA 0503098 | Construction Sand and GravelSurface | AbandonedStatus date: 07/01/2019 | Kit Carson CountyReported operatorKit Carson County-COReported controller | Production / employmentSafety recordsView source coverage → |
| DISTRICT #1 SCREEN PLANTBaca, CONear WalshMSHA 0504523 | Construction Sand and GravelSurface | AbandonedStatus date: 11/06/2023 | Baca CountyReported operatorBaca County-COReported controller | Production / employmentSafety recordsView source coverage → |
| District 2 & 3 Portable Plant #2Logan, COMSHA 0504068 | Construction Sand and GravelSurface | AbandonedStatus date: 10/04/1995 | Logan County Road & Bridge DepartmentReported operatorLogan County - CoReported controller | Neither history importedView source coverage → |
| District #2 Stratton CoKit Carson, CONear StrattonMSHA 0503099 | Construction Sand and GravelSurface | AbandonedStatus date: 07/16/2025 | Kit Carson CountyReported operatorKit Carson County-COReported controller | Production / employmentSafety recordsView source coverage → |
| Districts 1 2 & 3 Portable PlantYuma, CONear WrayMSHA 0504076 | Construction Sand and GravelSurface | AbandonedStatus date: 07/03/2013 | Yuma County Road DepartmentReported operatorYuma County-CoReported controller | Production / employmentSafety recordsView source coverage → |
| Ditmore QuarryDouglas, COMSHA 0502032 | Construction Sand and GravelSurface | AbandonedStatus date: 02/02/1983 | Franktown Sand & Gravel IncReported operatorWalker Ralph EReported controller | Neither history importedView source coverage → |
| Dixie MineClear Creek, COMSHA 0502724 | Gold OreUnderground | AbandonedStatus date: 07/03/1984 | Dixie Mining & Milling CorpReported operatorFillip NichulasReported controller | Neither history importedView source coverage → |
| Dixie MineClear Creek, CONear Idaho SpringsMSHA 0505126 | Gold OreSurface | AbandonedStatus date: 10/09/2020 | Teton Drilling, Inc.Reported operatorSteve Jones; Mike Jones; James T WilsonReported 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.