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 |
|---|---|---|---|---|
| Mc Intosh PitFremont, WYMSHA 4801070 | Uranium OreSurface | AbandonedStatus date: 07/19/1982 | Western Nuclear IncReported operatorPhelps Dodge CorpReported controller | Neither history importedView source coverage → |
| Mc Kamey Pit No 2 Or Mc Kamey PitWashakie, WYMSHA 4801157 | Construction Sand and GravelSurface | AbandonedStatus date: 03/23/1983 | Mc Kamey Trucking & Concrete IncReported operatorMc Kamey Trucking & Concrete IncReported controller | Neither history importedView source coverage → |
| Medicine Bow MineCarbon, WYNear HannaMSHA 4800900 | Coal (Bituminous)Surface | AbandonedStatus date: 06/23/2006 | Arch Of Wyoming LLCReported operatorArch Resources IncReported controller | Production / employmentSafety recordsView source coverage → |
| Melgaard #1Campbell, WYNear GilletteMSHA 4801604 | Common ShaleSurface | AbandonedStatus date: 04/26/2004 | Melgaard Construction Company IncReported operatorJohn E Melgaard JrReported controller | Production / employmentSafety recordsView source coverage → |
| Meyers Crusher 1Sheridan, WYMSHA 4801401 | Construction Sand and GravelSurface | AbandonedStatus date: 10/31/1985 | Northern Improvement CompanyReported operatorMcCormick IncReported controller | Neither history importedView source coverage → |
| Midvale Irrigation PitFremont, WYMSHA 4801156 | Construction Sand and GravelSurface | AbandonedStatus date: 07/12/1983 | Frost Construction CompanyReported operatorJames M FrostReported controller | Neither history importedView source coverage → |
| Midwest-Thoeming & WakemanNatrona, WYMSHA 4800063 | Common Clays NECSurface | AbandonedStatus date: 10/01/1973 | Benton Clay CompanyReported operatorAsea Brown Boveri Ltd (ABB)Reported controller | Neither history importedView source coverage → |
| Milford PitFremont, WYMSHA 4801164 | Construction Sand and GravelSurface | AbandonedStatus date: 08/10/1983 | Empire Sand & Gravel Company IncReported operatorMeredith ReiterReported controller | Neither history importedView source coverage → |
| Miller PitNatrona, WYMSHA 4801298 | Construction Sand and GravelSurface | AbandonedStatus date: 06/19/1981 | Frost Construction CompanyReported operatorJames M FrostReported controller | Neither history importedView source coverage → |
| Mill Fall Run Mine #1Weston, WYMSHA 4808480 | Coal (Bituminous)Underground | AbandonedStatus date: 04/05/1995 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Mineral DivisionBig Horn, WYMSHA 4800830 | Common Clays NECSurface | AbandonedStatus date: 03/19/1980 | Dresser Minerals DivisionReported operatorDresser Industries IncReported controller | Neither history importedView source coverage → |
| Mineral Hill Mine And MillCrook, WYMSHA 4801322 | Gold OreUnderground | AbandonedStatus date: 04/12/1982 | Hoffman Engineering CorpReported operatorHoffman James LReported controller | Neither history importedView source coverage → |
| Mineralwod Inc Mine And MillCarbon, WYMSHA 4801145 | VermiculiteSurface | AbandonedStatus date: 06/18/1979 | Mineralwod IncReported operatorMineralwod IncReported controller | Neither history importedView source coverage → |
| Missouri MineCrook, WYMSHA 4801125 | Fire ClaySurface | AbandonedStatus date: 10/30/1987 | Federal Ore & Chemicals IncReported operatorDresser Industries Inc; Halliburton CoReported controller | Neither history importedView source coverage → |
| Mk Block And Redimix PlantWashakie, WYMSHA 4800302 | Construction Sand and GravelSurface | AbandonedStatus date: 05/08/1978 | Mk Block & Redimix IncReported operatorMk Block & Redimix IncReported controller | Neither history importedView source coverage → |
| Mobile Crusher 4Sublette, WYNear Big PineyMSHA 4801880 | Construction Sand and GravelSurface | AbandonedStatus date: 09/15/2025 | E-Cubed Industries, LLCReported operatorKeith HughesReported controller | Production / employmentSafety recordsView source coverage → |
| Mobile Crushing/Screening PlantLincoln, WYNear MarbletonMSHA 4801792 | Construction Sand and GravelSurface | AbandonedStatus date: 03/21/2017 | Mike's Oilfield Svc.Reported operatorMichael HughesReported controller | Production / employmentSafety recordsView source coverage → |
| Mobile Plant 1Sheridan, WYNear SheridanMSHA 4801852 | AgateSurface | AbandonedStatus date: 07/01/2023 | GW Construction, LLCReported operatorClay PersianReported controller | Production / employmentSafety recordsView source coverage → |
| Morning DewNatrona, WYMSHA 4801515 | FeldsparSurface | AbandonedStatus date: 02/23/1994 | Colorado Quarries IncReported operatorBill TezakReported controller | Neither history importedView source coverage → |
| Morning StarPark, WYMSHA 4801288 | Silver OreUnderground | AbandonedStatus date: 06/22/1981 | Weaver MiningReported operatorWeaver MiningReported controller | Neither history importedView source coverage → |
| Morris Construction PitCampbell, WYMSHA 4801152 | Construction Sand and GravelSurface | AbandonedStatus date: 12/13/1978 | Morris Construction CompanyReported operatorMorris Construction CompanyReported controller | Neither history importedView source coverage → |
| Mozley #1Sheridan, WYMSHA 4801419 | Construction Sand and GravelSurface | AbandonedStatus date: 08/02/1995 | Guernsey Stone & Construction CompanyReported operatorPeter Kiewit Sons' IncReported controller | Neither history importedView source coverage → |
| MUDDY CREEK GRAVELCarbon, WYNear BaggsMSHA 4801601 | Construction Sand and GravelSurface | AbandonedStatus date: 09/16/2003 | Muddy Creek GravelReported operatorDarwin L DunnReported controller | Production / employmentSafety recordsView source coverage → |
| Muddy Creek MineFremont, WYMSHA 4801381 | Coal (Bituminous)Surface | AbandonedStatus date: 05/01/1983 | Muddy Creek Mines IncReported operatorBarrett HenryReported controller | Neither history importedView source coverage → |
| Muddy Creek MineJohnson, WYNear BuffaloMSHA 4801718 | Construction Sand and GravelSurface | AbandonedStatus date: 03/21/2014 | Ararat Rock of WyomingReported operatorJames H CrossinghamReported controller | Production / employmentSafety recordsView source coverage → |
| Muddy Creek StripFremont, WYMSHA 4800844 | Coal (Bituminous)Surface | AbandonedStatus date: 07/25/1978 | Muddy Creek Coal CompanyReported operatorGianunzio JohnReported controller | Neither history importedView source coverage → |
| MULLINAX SAND & GRAVEL PLANTSheridan, WYNear SheridanMSHA 4800289 | Construction Sand and GravelSurface | AbandonedStatus date: 06/26/2026 | Mullinax IncReported operatorNathan MullinaxReported controller | Production / employmentSafety recordsView source coverage → |
| Nats NuggetConverse, WYMSHA 4801190 | Uranium-Vanadium OreUnderground | AbandonedStatus date: 03/19/1980 | Silver King Mines IncReported operatorSilver King Mines IncReported controller | Neither history importedView source coverage → |
| N C Paving Crusher #1Natrona, WYMSHA 4801253 | Construction Sand and GravelSurface | AbandonedStatus date: 10/22/1982 | N-C PavingReported operatorN-C PavingReported controller | Neither history importedView source coverage → |
| Newcastle QuarryWeston, WYMSHA 4801321 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 01/03/1989 | Summit Materials IncReported operatorSummit IncReported 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.