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 |
|---|---|---|---|---|
| Kremmling AirportGrand, COMSHA 0503741 | Construction Sand and GravelSurface | AbandonedStatus date: 08/12/1982 | Grand County Road & Bridge DepartmentReported operatorGrand County-CoReported controller | Neither history importedView source coverage → |
| Kuchicak Research MineBent, COMSHA 0501617 | Coal (Bituminous)Underground | AbandonedStatus date: 11/18/1993 | Ascg IncReported operatorAscg IncReported controller | Neither history importedView source coverage → |
| KUE-KEN CRUSHERMoffat, CONear CRAIGMSHA 0504960 | Construction Sand and GravelSurface | AbandonedStatus date: 08/29/2014 | WAGNER CONSTRUCTION INC.Reported operatorJay L WagnerReported controller | Production / employmentSafety recordsView source coverage → |
| LadwigJefferson, COMSHA 0501184 | Uranium OreUnderground | AbandonedStatus date: 02/20/1980 | Energy Fuels Nuclear IncReported operatorHarold RobertsReported controller | Neither history importedView source coverage → |
| Lake George MillPark, COMSHA 0500775 | Silver OreFacility | AbandonedStatus date: 07/13/1982 | Lake George IndustriesReported operatorMetro InternationalReported controller | Neither history importedView source coverage → |
| Lakewood Brick PlantJefferson, COMSHA 0500230 | Fire ClayFacility | AbandonedStatus date: 05/21/1982 | Lakewood Brick & Tile CompanyReported operatorJoseph C WelteReported controller | Neither history importedView source coverage → |
| Lamar Concrete DivisionProwers, COMSHA 0501052 | Construction Sand and GravelSurface | AbandonedStatus date: 01/09/1991 | Valco IncReported operatorThomas E BrubakerReported controller | Neither history importedView source coverage → |
| Lambert PitDelta, COMSHA 0502547 | Construction Sand and GravelSurface | AbandonedStatus date: 08/14/1985 | Bonine ConstructionReported operatorBonine Earl & Terri WyleyReported controller | Neither history importedView source coverage → |
| LandslideSummit, COMSHA 0503832 | Gold OreUnderground | AbandonedStatus date: 07/21/1983 | Mallon Minerals CorpReported operatorMallon Minerals CorpReported controller | Neither history importedView source coverage → |
| La Plata #1La Plata, CONear Durango, CoMSHA 0503133 | Coal (Anthracite)Underground | Abandoned and SealedStatus date: 08/05/1999 | La Plata Coal CorpReported operatorSydenstricker ChristineReported controller | Neither history importedView source coverage → |
| LA PLATA WASH PLANTLa Plata, COMSHA 0504118 | Construction Sand and GravelSurface | AbandonedStatus date: 04/14/1997 | Western Mobile Four Corners DivisionReported operatorRedland PlcReported controller | Neither history importedView source coverage → |
| LAPORTE HYDRATE LIME PLANTLarimer, CONear LaPorteMSHA 0503964 | LimeSurface | AbandonedStatus date: 08/01/2016 | Pete Lien & Sons IncReported operatorPete Lien & Sons IncReported controller | Production / employmentSafety recordsView source coverage → |
| LariatJefferson, COMSHA 0500223 | Common Clays NECSurface | AbandonedStatus date: 04/01/1991 | Robinson Brick CompanyReported operatorF George Robinson JrReported controller | Neither history importedView source coverage → |
| LARIMER QUARRYLarimer, COMSHA 0502813 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 03/05/1997 | Divide Constructors IncReported operatorJerome J DohertyReported controller | Neither history importedView source coverage → |
| Larkspur Pits 1 & 2Douglas, COMSHA 0503144 | Construction Sand and GravelSurface | AbandonedStatus date: 07/16/1987 | Kiewit Western CompanyReported operatorPeter Kiewit Sons' IncReported controller | Neither history importedView source coverage → |
| Larsen-LietzerCheyenne, COMSHA 0503313 | Construction Sand and GravelSurface | AbandonedStatus date: 08/27/1979 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| Larson PitWeld, COMSHA 0503988 | Construction Sand and GravelSurface | AbandonedStatus date: 08/05/1991 | Siegrist Construction CompanyReported operatorSiegrist Construction CompanyReported controller | Neither history importedView source coverage → |
| LARSON PITWeld, COMSHA 0504602 | Construction Sand and GravelSurface | AbandonedStatus date: 02/01/1999 | Camas Colorado IncReported operatorAggregate Industries PLCReported controller | Production / employmentView source coverage → |
| Lascar PitHuerfano, CONear WalsenburgMSHA 0505174 | Construction Sand and GravelSurface | AbandonedStatus date: 09/09/2025 | Siete IncReported operatorBaxter Wayne KirklandReported controller | Production / employmentSafety recordsView source coverage → |
| Last ChanceMontrose, COMSHA 0503052 | Uranium OreUnderground | AbandonedStatus date: 05/17/1982 | F & F Mendisco Mining CompanyReported operatorMendisco FelixReported controller | Neither history importedView source coverage → |
| Last Chance MineMontrose, CONear Naturita MSHA 0504627 | Uranium OreUnderground | AbandonedStatus date: 03/23/2009 | Nuvemco LLCReported operatorEMSU LLCReported controller | Production / employmentSafety recordsView source coverage → |
| Last Chance No 2Fremont, COMSHA 0500250 | Coal (Bituminous)Underground | AbandonedStatus date: 08/29/1974 | Last Chance Coal CompanyReported operatorLast Chance Coal CompanyReported controller | Neither history importedView source coverage → |
| Latham PitMesa, COMSHA 0503906 | Construction Sand and GravelSurface | AbandonedStatus date: 05/30/1985 | Corn Construction CompanyReported operatorLarry W CornReported controller | Neither history importedView source coverage → |
| LAWRENCE DISTRIBUTION YARDDouglas, COMSHA 0504701 | Construction Sand and GravelFacility | AbandonedStatus date: 01/02/2002 | Aggregate Industries West Central Region IncReported operatorAmrize LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Lawrence PitDouglas, COMSHA 0503278 | Construction Sand and GravelSurface | AbandonedStatus date: 04/08/1988 | Brinkmann-Woodward Construction CompanyReported operatorWendell W BrinkmannReported controller | Neither history importedView source coverage → |
| Lazy LMontrose, COMSHA 0503123 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 09/11/1980 | Quadra Mining & Development CompanyReported operatorEnergy Resources Investment CorpReported controller | Neither history importedView source coverage → |
| LEADVILLE CUSTOM MILLLake, COMSHA 0504339 | Gold OreFacility | AbandonedStatus date: 08/14/2000 | Leadville Mining & Milling CorpReported operatorGifford A Dieterle; Jeffrey PrichardReported controller | Production / employmentView source coverage → |
| Leadville MillLake, CONear LeadvilleMSHA 0504992 | Gold OreFacility | AbandonedStatus date: 12/03/2014 | Union Milling Contractors, LLCReported operatorSteven Craig; Nick MichaelReported controller | Production / employmentView source coverage → |
| Leadville Research & Development Corp MiLake, COMSHA 0504064 | PyritesFacility | AbandonedStatus date: 02/28/1989 | Leadville Research & Development CorpReported operatorAllen K PhillipsReported controller | Neither history importedView source coverage → |
| Leffler PitMorgan, COMSHA 0503010 | Construction Sand and GravelSurface | AbandonedStatus date: 06/17/1981 | Morgan County HighwayReported operatorMorgan County - CoReported 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.