| #835 CrusherPark, CONear FairplayMSHA 0505148 | Construction Sand and GravelSurface | AbandonedStatus date: 09/04/2024 | Park County Public WorksReported operatorPark County-COReported controller | Production / employmentSafety recordsView source coverage → |
| 8-Mile Clay MineFremont, COMSHA 0503925 | Fire ClaySurface | AbandonedStatus date: 02/17/1993 | Summit Pressed Brick & Tile CompanyReported operatorJoseph C WelteReported controller | Neither history importedView source coverage → |
| 8-MILE GRAVEL PIT-WESTFremont, COMSHA 0504449 | Construction Sand and GravelSurface | AbandonedStatus date: 09/14/1999 | Rocky Mountain Materials & Asphalt IncReported operatorStephen SchnurrReported controller | Production / employmentView source coverage → |
| ABBOTT PITOuray, CONear RidgewayMSHA 0502626 | Construction Sand and GravelSurface | AbandonedStatus date: 07/19/2004 | Abbott Ready Mix IncReported operatorRobert L AbbottReported controller | Production / employmentSafety recordsView source coverage → |
| Ada Bell MineTeller, COMSHA 0503540 | Gold OreUnderground | AbandonedStatus date: 05/15/1981 | Colorado Gold & Silver IncReported operatorM C ReevesReported controller | Neither history importedView source coverage → |
| Adams Pit 512Mesa, COMSHA 0502358 | Construction Sand and GravelSurface | AbandonedStatus date: 05/24/1985 | Whitewater Building Materials CorpReported operatorLois Gardner; Arline M StewartReported controller | Neither history importedView source coverage → |
| Adams PlantAdams, COMSHA 0501029 | Construction Sand and GravelSurface | AbandonedStatus date: 09/27/1993 | Mobile Premix Sand & Gravel CompanyReported operatorRedland PlcReported controller | Neither history importedView source coverage → |
| Adams Transit MixAdams, COMSHA 0500927 | Construction Sand and GravelSurface | AbandonedStatus date: 06/17/1981 | Adams Transit Mix CorpReported operatorBaumgartner H EReported controller | Neither history importedView source coverage → |
| Adobe Longhorn MineGunnison, CONear Tin CupMSHA 0505107 | Gold OreUnderground | AbandonedStatus date: 10/01/2019 | Sweetwater Mining CorporationReported operatorTyler G LongReported controller | Production / employmentView source coverage → |
| Aggregate Sand And Soil IncorporatedWeld, COMSHA 0504056 | Construction Sand and GravelSurface | AbandonedStatus date: 01/30/1991 | Aggregate Sand & Soil IncReported operatorBartz RussellReported controller | Neither history importedView source coverage → |
| AIRPORT PIT #1Fremont, COMSHA 0503732 | Construction Sand and GravelSurface | AbandonedStatus date: 09/29/1997 | R E Monks Construction CompanyReported operatorMonks Robert EReported controller | Neither history importedView source coverage → |
| Airport Pit #2Fremont, COMSHA 0503927 | Construction Sand and GravelSurface | AbandonedStatus date: 09/08/1987 | R E Monks Construction CompanyReported operatorMonks Robert EReported controller | Neither history importedView source coverage → |
| Ajax MineTeller, COMSHA 0502266 | Gold OreUnderground | AbandonedStatus date: 12/02/1985 | Cripple Creek & Victor Gold Mining CompanyReported operatorPike'S Peak Mining Company & Golden Cycle Gold CorReported controller | Neither history importedView source coverage → |
| Alamosa PitAlamosa, COMSHA 0502984 | Construction Sand and GravelSurface | AbandonedStatus date: 04/24/1979 | J & J Gravel CompanyReported operatorJ & J Gravel CompanyReported controller | Neither history importedView source coverage → |
| Albert Frei & Sons Pit #4Adams, CONear BrightonMSHA 0503659 | Construction Sand and GravelSurface | AbandonedStatus date: 10/01/2015 | Albert Frei & Sons IncReported operatorAlbert R FreiReported controller | Production / employmentSafety recordsView source coverage → |
| Albert Frei & Sons Pit #8Adams, CONear HendersonMSHA 0504483 | Crushed, Broken GraniteSurface | AbandonedStatus date: 08/29/2011 | Albert Frei & Sons IncReported operatorAlbert R FreiReported controller | Production / employmentSafety recordsView source coverage → |
| Alcott PitDelta, COMSHA 0503431 | Construction Sand and GravelSurface | AbandonedStatus date: 02/14/1980 | Southway Const Co Inc & Asphalt Gravel Prod IncReported operatorEstate of Henry T. Southway Jr.Reported controller | Neither history importedView source coverage → |
| Alessi PitRoutt, COMSHA 0503420 | Construction Sand and GravelSurface | AbandonedStatus date: 08/14/1985 | Sleeping Giant GravelReported operatorAlessi CarmenReported controller | Neither history importedView source coverage → |
| Alford PitEl Paso, COMSHA 0502973 | 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 → |
| Alice No 2 Lc-Sr-IsSan Miguel, COMSHA 0503033 | Uranium OreUnderground | AbandonedStatus date: 05/18/1978 | Edward E MillerReported operatorEdward E MillerReported controller | Neither history importedView source coverage → |
| Allen Water CreekGarfield, COMSHA 0503521 | Construction Sand and GravelSurface | AbandonedStatus date: 09/16/1982 | L A Young Sons Construction CompanyReported operatorYoung AlanReported controller | Neither history importedView source coverage → |
| Allied Dirt Moving Co Pit & PlantJefferson, COMSHA 0502030 | Construction Sand and GravelSurface | AbandonedStatus date: 02/08/1980 | Allied Dirt Moving CompanyReported operatorAllied Dirt Moving CompanyReported controller | Neither history importedView source coverage → |
| ALLIED PORTABLE CRUSHINGWeld, CONear Fort CollinsMSHA 0504686 | Dimension Stone NECSurface | AbandonedStatus date: 11/04/2002 | Allied Portable Crushing/RecyclingReported operatorBrt Holdings LLC; Aggregate IndustriesReported controller | Production / employmentSafety recordsView source coverage → |
| ALLIED PORTABLE CRUSHINGLarimer, CONear Fort CollinsMSHA 0504703 | Construction Sand and GravelSurface | AbandonedStatus date: 11/04/2002 | Allied Portable Crushing/RecyclingReported operatorBrt Holdings LLC; Aggregate IndustriesReported controller | Production / employmentSafety recordsView source coverage → |
| All StarsMontrose, COMSHA 0502512 | Uranium OreUnderground | AbandonedStatus date: 03/06/1990 | Nelson Mining IncReported operatorNelson JoeReported controller | Neither history importedView source coverage → |
| Alma LincolnClear Creek, COMSHA 0504564 | Gold OreUnderground | AbandonedStatus date: 01/11/1996 | Lincoln Gold Mines IncReported operatorTim HartleyReported controller | Neither history importedView source coverage → |
| Alma PlacerPark, COMSHA 0502577 | Gold OreSurface | AbandonedStatus date: 09/23/1982 | Timberline EnterprisesReported operatorReid Gordon P-Arnold W SpielmanReported controller | Neither history importedView source coverage → |
| ALMA PLANTPark, CONear AlmaMSHA 0504986 | Construction Sand and GravelSurface | AbandonedStatus date: 12/23/2011 | WILLITS COMPANY, INC.Reported operatorRobert C WillitsReported controller | Production / employmentSafety recordsView source coverage → |
| Alma Project MillPark, COMSHA 0503486 | Gold OreFacility | AbandonedStatus date: 07/14/1989 | London Mine VentureReported operatorCobb Resources Corp & Boulder Gold IncReported controller | Neither history importedView source coverage → |
| Alma Queen MinePark, COMSHA 0504086 | Gold OreUnderground | AbandonedStatus date: 03/24/1986 | Alma Queen MineReported operatorZvonkovich Joseph & Michael TrouskolReported controller | Neither history importedView source coverage → |