HISTORICAL SITES / RESEARCH DIRECTORY

Abandoned mines in Colorado

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.

2,230 matching recordsMSHA snapshot · 2026-10-31

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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 locationMaterial / typeReported statusReported relationshipsAvailable history
YoungGarfield, COMSHA 0503360Construction Sand and GravelSurfaceAbandonedStatus date: 11/12/1980Colorado Department Of HighwaysReported operatorState Of ColoradoReported controllerNeither history importedView source coverage →
Youngfield Pit And PlantJefferson, COMSHA 0501001Construction Sand and GravelSurfaceAbandonedStatus date: 09/22/1978Mobile Premix Sand & Gravel CompanyReported operatorM P M IncReported controllerNeither history importedView source coverage →
Young Ranch ResourceGilpin, CONear Central CityMSHA 0505165Construction Sand and GravelSurfaceAbandonedStatus date: 02/23/2026Young Ranch Resource, LLCReported operatorRobert Young JrReported controllerProduction / employmentSafety recordsView source coverage →
Yukon MillSan Juan, COMSHA 0502142Gold OreFacilityAbandonedStatus date: 02/07/1983Arrigo Milling & MiningReported operatorArrigo Milling & MiningReported controllerNeither history importedView source coverage →
Yust Ranch Gravel PitGrand, CONear KremmlingMSHA 0504530Construction Sand and GravelSurfaceAbandonedStatus date: 07/29/2008Tri-River IncReported operatorJerry CarpenterReported controllerProduction / employmentSafety recordsView source coverage →
Zamboanga MineSan Miguel, COMSHA 0503871Gold OreUndergroundAbandonedStatus date: 04/25/1985Zamboanga MiningReported operatorZamboanga MiningReported controllerNeither history importedView source coverage →
Zapata CrushingAlamosa, COMSHA 0503710Construction Sand and GravelSurfaceAbandonedStatus date: 03/07/1983Southway Const Co Inc & Asphalt Gravel Prod IncReported operatorEstate of Henry T. Southway Jr.Reported controllerNeither history importedView source coverage →
Zigan Sand And Gravel Pit 2Adams, COMSHA 0503553Construction Sand and GravelSurfaceAbandonedStatus date: 02/07/1995Zigan Sand & Gravel IncReported operatorZigan TedReported controllerNeither history importedView source coverage →
Zinghein QuarryFremont, COMSHA 0500863Crushed, Broken Stone NECSurfaceAbandonedStatus date: 07/26/1979Texas Creek Native Stone IncReported operatorTexas Creek Native Stone IncReported controllerNeither history importedView source coverage →
Zweck PitBoulder, COMSHA 0504375Construction Sand and GravelSurfaceAbandonedStatus date: 09/25/1991C & M Sand & GravelReported operatorDavid B NystromReported controllerNeither history importedView source coverage →

Take the research further

Acquisition & reuse

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 ↗

Reclamation projects

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.