| Sherman MineLake, COMSHA 0500604 | Silver OreUnderground | AbandonedStatus date: 02/16/1989 | Leadville CorpReported operatorRisk RobertReported controller | Neither history importedView source coverage → |
| ShippsWeld, COMSHA 0503393 | Construction Sand and GravelSurface | AbandonedStatus date: 08/27/1979 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| S & H MineWeld, CONear PlattevilleMSHA 0504783 | Construction Sand and GravelSurface | AbandonedStatus date: 03/22/2011 | Platte Sand & GravelReported operatorTom SharkeyReported controller | Production / employmentSafety recordsView source coverage → |
| Shot Rock PitLas Animas, CONear CokedaleMSHA 0504609 | Construction Sand and GravelSurface | AbandonedStatus date: 09/06/2024 | Tamrock Gravel CompanyReported operatorBrent TamburelliReported controller | Production / employmentSafety recordsView source coverage → |
| Showboat MineMontrose, COMSHA 0503117 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 06/17/1981 | Greagor & Switzler Mining CompanyReported operatorGreagor & Switzler Mining CompanyReported controller | Neither history importedView source coverage → |
| Siddle PitMesa, COMSHA 0503651 | Construction Sand and GravelSurface | AbandonedStatus date: 05/30/1985 | Corn Construction CompanyReported operatorLarry W CornReported controller | Neither history importedView source coverage → |
| Sievers PitGarfield, COMSHA 0504143 | Construction Sand and GravelSurface | AbandonedStatus date: 04/16/1987 | Western Sand & Gravel CompanyReported operatorWestern Sand & Gravel CompanyReported controller | Neither history importedView source coverage → |
| Silbrico Loading DockConejos, COMSHA 0502631 | PerliteFacility | AbandonedStatus date: 01/11/1983 | Silbrico CorpReported operatorChris Mendius; Steven B Garnett; Todd E KokesReported controller | Neither history importedView source coverage → |
| Silka PitGunnison, COMSHA 0503458 | Crushed, Broken GraniteSurface | AbandonedStatus date: 09/20/1979 | Southway Const Co Inc & Asphalt Gravel Prod IncReported operatorEstate of Henry T. Southway Jr.Reported controller | Neither history importedView source coverage → |
| Silver Dollar #1Montrose, COMSHA 0503008 | Uranium OreUnderground | AbandonedStatus date: 06/17/1981 | Lyssa Mining CoReported operatorLyssa Mining CoReported controller | Neither history importedView source coverage → |
| Silver Gem MinePark, COMSHA 0503745 | Silver OreUnderground | AbandonedStatus date: 07/03/1985 | Dorado Mining Company IncReported operatorA W WadsworthReported controller | Neither history importedView source coverage → |
| Silver Heels MinePark, COMSHA 0503662 | Gold OreSurface | AbandonedStatus date: 08/01/1984 | Kendall Mining CorpReported operatorKendall Mining International IncReported controller | Neither history importedView source coverage → |
| Silver LinkOuray, COMSHA 0503681 | Silver OreUnderground | AbandonedStatus date: 09/20/1983 | 1848 CoporationReported operatorEllerman OttoReported controller | Neither history importedView source coverage → |
| Silver StarClear Creek, COMSHA 0503110 | Gold OreSurface | AbandonedStatus date: 02/23/1978 | Arthur L & Harry E SmithReported operatorArthur L & Harry E SmithReported controller | Neither history importedView source coverage → |
| SilverthorneSummit, COMSHA 0502135 | Construction Sand and GravelSurface | AbandonedStatus date: 09/29/1983 | L G Everist IncReported operatorL G Everist IncReported controller | Neither history importedView source coverage → |
| Silverthorne NorthSummit, COMSHA 0500979 | Construction Sand and GravelSurface | AbandonedStatus date: 10/30/1980 | L G Everist IncReported operatorL G Everist IncReported controller | Neither history importedView source coverage → |
| Silver TipGrand, COMSHA 0501527 | Gold OreUnderground | AbandonedStatus date: 04/23/1985 | Fremont H GoodwineReported operatorGoodwine Fremont HReported controller | Neither history importedView source coverage → |
| Silverton #1San Juan, CONear SilvertonMSHA 0504903 | Construction Sand and GravelSurface | AbandonedStatus date: 12/11/2009 | Brian Fullmer Construction LLCReported operatorBrian J FullmerReported controller | Production / employmentSafety recordsView source coverage → |
| Silver WingSummit, COMSHA 0504317 | Silver OreUnderground | AbandonedStatus date: 06/01/1992 | Moly 1 CorpReported operatorMoly 1 CorpReported controller | Neither history importedView source coverage → |
| Silver Wing MineSummit, COMSHA 0503154 | Lead-Zinc OreUnderground | AbandonedStatus date: 07/23/1979 | Montezuma Silver CorpReported operatorMontezuma Silver CorpReported controller | Neither history importedView source coverage → |
| SimpsonLarimer, COMSHA 0503258 | Construction Sand and GravelSurface | AbandonedStatus date: 07/03/1984 | Flatiron Materials CompanyReported operatorFlatiron Paving CompanyReported controller | Neither history importedView source coverage → |
| SimpsonWeld, COMSHA 0503394 | Construction Sand and GravelSurface | AbandonedStatus date: 08/27/1979 | Colorado Department Of HighwaysReported operatorState Of ColoradoReported controller | Neither history importedView source coverage → |
| SinbadMontrose, COMSHA 0503999 | Silver OreSurface | AbandonedStatus date: 01/22/1987 | Abana CorpReported operatorBoldt James RReported controller | Neither history importedView source coverage → |
| Skoglund PitSaguache, CONear CrestoneMSHA 0504782 | Construction Sand and GravelSurface | AbandonedStatus date: 06/18/2024 | Skoglund Excavating IncReported operatorKenneth L SkoglundReported controller | Production / employmentSafety recordsView source coverage → |
| SLAB CANYON QUARRYLarimer, COMSHA 0500345 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 12/13/1999 | Holcim (US), IncReported operatorHolcim LtdReported controller | Production / employmentView source coverage → |
| Sleepy Jim TunnelTeller, COMSHA 0504213 | Gold OreUnderground | AbandonedStatus date: 07/29/1988 | Young Mining CompanyReported operatorRandolph ElmerReported controller | Neither history importedView source coverage → |
| Slide GroupSan Miguel, COMSHA 0500531 | Gold OreUnderground | AbandonedStatus date: 02/03/1977 | Randy BelisleReported operatorBelisle RandyReported controller | Neither history importedView source coverage → |
| Sloan Diamond ProjectLarimer, COMSHA 0503783 | GemstonesUnderground | AbandonedStatus date: 03/15/1995 | L E L ConstructionReported operatorLuzar Lawrence EReported controller | Neither history importedView source coverage → |
| SLOAN MILLLarimer, COMSHA 0504542 | GemstonesFacility | AbandonedStatus date: 08/04/1997 | Barker Construction Company IncReported operatorBarker Construction Company IncReported controller | Neither history importedView source coverage → |
| Smith PitEl Paso, COMSHA 0502965 | 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 → |