| Golden Wonder Hinsdale, CONear LAKE CITYMSHA 0501506 | Gold OreUnderground | AbandonedStatus date: 10/01/2019 | Coal Creek ConstructionReported operatorMichael Ray SchellReported controller | Production / employmentSafety recordsView source coverage → |
| Gold Hill millBoulder, CONear BoulderMSHA 0505034 | Gold OreFacility | AbandonedStatus date: 11/21/2018 | Colorado Milling Company, LLCReported operatorMark A SteenReported controller | Production / employmentView source coverage → |
| Gold Hill Mining ProjectOuray, CONear OurayMSHA 0505019 | Gold OreUnderground | AbandonedStatus date: 11/29/2013 | Tomcat Mining CorporationReported operatorDianna L ReamsReported controller | Neither history importedView source coverage → |
| Gold King MineSan Juan, COMSHA 0504057 | Gold OreUnderground | AbandonedStatus date: 07/26/1990 | Gold King Mines CorpReported operatorGold King Consolidated IncReported controller | Neither history importedView source coverage → |
| Gold LinksGunnison, COMSHA 0503837 | Gold OreUnderground | AbandonedStatus date: 07/06/1983 | Keystone Engineering IncReported operatorKeystone Engineering IncReported controller | Neither history importedView source coverage → |
| Gold Poke PlacerGunnison, COMSHA 0504475 | Gold OreSurface | AbandonedStatus date: 09/24/1992 | Gold Poke PlacerReported operatorChristopher Gary W & George BlatcherReported controller | Neither history importedView source coverage → |
| Gold Rae MinePark, COMSHA 0504071 | Gold OreSurface | AbandonedStatus date: 03/27/1987 | Gold Rae CorpReported operatorGold Rae CorpReported controller | Neither history importedView source coverage → |
| Gold Star Open Pit MineTeller, COMSHA 0504380 | Gold OreSurface | AbandonedStatus date: 09/19/1989 | Cripple Creek & Victor Gold Mining CompanyReported operatorPike'S Peak Mining Company & Golden Cycle Gold CorReported controller | Neither history importedView source coverage → |
| Good Friday MineBoulder, COMSHA 0502720 | Tungsten OreUnderground | AbandonedStatus date: 07/15/1985 | Metal Enterprises IncReported operatorMetal Enterprises IncReported controller | Neither history importedView source coverage → |
| GOODMAN PITArchuleta, COMSHA 0503950 | Construction Sand and GravelSurface | AbandonedStatus date: 08/17/2000 | Smithco Construction & ExcavationReported operatorKenneth SmithReported controller | Production / employmentSafety recordsView source coverage → |
| Goodmiller 2 Pit Weld, CONear New RaymerMSHA 0505203 | Construction Sand and GravelSurface | AbandonedStatus date: 02/23/2026 | C&H Excavation Reported operatorCliff E SimpsonReported controller | Production / employmentView source coverage → |
| Goodwin QuarryLarimer, COMSHA 0500427 | Crushed, Broken Stone NECFacility | AbandonedStatus date: 09/06/1985 | Ideal Basic Industries-Cement DivisionReported operatorIdeal Basic Industries IncReported controller | Neither history importedView source coverage → |
| Goose Haven Adams County PitAdams, COMSHA 0504108 | Construction Sand and GravelSurface | AbandonedStatus date: 08/08/1988 | Goose Haven Sand & Gravel IncReported operatorTiefel Douglas AReported controller | Neither history importedView source coverage → |
| Goosehaven IiBoulder, COMSHA 0504094 | Construction Sand and GravelSurface | AbandonedStatus date: 08/21/1990 | Frontier MaterialsReported operatorHenry BralyReported controller | Neither history importedView source coverage → |
| Goose Haven PitBoulder, CONear LafeyetteMSHA 0504828 | Construction Sand and GravelSurface | AbandonedStatus date: 09/04/2024 | Rock Products of Colorado, LLCReported operatorFarfrumwurkin LLLPReported controller | Production / employmentSafety recordsView source coverage → |
| Goose Haven Sand & GravelBoulder, COMSHA 0504070 | Construction Sand and GravelSurface | AbandonedStatus date: 05/01/1994 | Goose Haven Sand & Gravel IncReported operatorTiefel Douglas AReported controller | Neither history importedView source coverage → |
| Gosney CrusherLa Plata, CONear BAYFIELDMSHA 0504044 | Construction Sand and GravelSurface | AbandonedStatus date: 05/30/2006 | Gosney & Sons IncReported operatorDon L GosneyReported controller | Production / employmentSafety recordsView source coverage → |
| Gosney Wash PlantLa Plata, CONear BayfieldMSHA 0504772 | Sand, CommonSurface | AbandonedStatus date: 05/31/2006 | Gosney & Sons IncReported operatorDon L GosneyReported controller | Production / employmentSafety recordsView source coverage → |
| Gove Canyon PitDouglas, COMSHA 0503704 | Crushed, Broken SandstoneSurface | AbandonedStatus date: 08/06/1987 | Colorado Silica Sand IncReported operatorCardium Service & Supply LtdReported controller | Neither history importedView source coverage → |
| GraceMontrose, COMSHA 0502706 | Uranium OreUnderground | AbandonedStatus date: 06/22/1982 | Union Carbide CorpReported operatorUnion Carbide CorpReported controller | Neither history importedView source coverage → |
| Grace MineClear Creek, COMSHA 0503842 | Gold OreSurface | AbandonedStatus date: 07/03/1985 | Aberford Minerals (Us) IncReported operatorAberford Resources LtdReported controller | Neither history importedView source coverage → |
| Granby AirportGrand, COMSHA 0503742 | Construction Sand and GravelSurface | AbandonedStatus date: 08/12/1982 | Grand County Road & Bridge DepartmentReported operatorGrand County-CoReported controller | Neither history importedView source coverage → |
| Grand CentralBoulder, COMSHA 0503887 | Gold OreUnderground | AbandonedStatus date: 09/09/1986 | Fatima Resources IncReported operatorGondrezick GeorgeReported controller | Neither history importedView source coverage → |
| Grand Crusher PortableMontrose, COMSHA 0504214 | Construction Sand and GravelSurface | AbandonedStatus date: 01/09/1989 | Grand Construction CompanyReported operatorLindhorst LeoReported controller | Neither history importedView source coverage → |
| GRAND GRAVELGrand, COMSHA 0504637 | Construction Sand and GravelSurface | AbandonedStatus date: 11/27/2000 | Grand Gravel CompanyReported operatorRichard E CurryReported controller | Production / employmentView source coverage → |
| GRAND GRAVELGrand, COMSHA 0504651 | Sand, CommonSurface | AbandonedStatus date: 06/20/2002 | Grand Gravel CompanyReported operatorRichard E CurryReported controller | Production / employmentSafety recordsView source coverage → |
| Grand Gravel PitJackson, COMSHA 0503846 | Construction Sand and GravelSurface | AbandonedStatus date: 09/13/1988 | Grand Gravel CompanyReported operatorRichard E CurryReported controller | Neither history importedView source coverage → |
| Granite MineLake, COMSHA 0504080 | Gold OreUnderground | AbandonedStatus date: 08/25/1986 | American Gold Resources CorpReported operatorIdzal Daniel CReported controller | Neither history importedView source coverage → |
| Grant PitPueblo, COMSHA 0504420 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 05/16/1995 | John Cullen Rock Crushing & GravelReported operatorCullen JohnReported controller | Neither history importedView source coverage → |
| Grassy Gap Coal Company #1 MineRoutt, CONear 773987 Steamboat Spr,CoMSHA 0503173 | Coal (Bituminous)Surface | Abandoned and SealedStatus date: 03/06/1985 | Rockcastle CompanyReported operatorMallory Donald CReported controller | Neither history importedView source coverage → |