| Morgan JobCentre, PANear Snow ShoeMSHA 3608407 | Coal (Bituminous)Surface | AbandonedStatus date: 07/09/1999 | Bern Coal IncReported operatorOwens Larry BReported controller | Neither history importedView source coverage → |
| Morgan Run SlopeSchuylkill, PANear MiddleportMSHA 3608559 | Coal (Anthracite)Underground | Abandoned and SealedStatus date: 06/25/1997 | Morgan Run Coal Company IncReported operatorGorenty Earl L JrReported controller | Neither history importedView source coverage → |
| Morgan StripArmstrong, PANear Kiskiminetas TwpMSHA 3605934 | Coal (Bituminous)Surface | AbandonedStatus date: 01/06/2003 | K M P AssociatesReported operatorWilliam J PaulisickReported controller | Production / employmentView source coverage → |
| Morgan Strip MineWestmoreland, PAMSHA 3605327 | Coal (Bituminous)Surface | AbandonedStatus date: 08/02/1976 | Lonnie E BellReported operatorBell Lonnie EReported controller | Neither history importedView source coverage → |
| MORGANTOWN PLANTBerks, PANear MorgantownMSHA 3603461 | Crushed, Broken Stone NECFacility | AbandonedStatus date: 01/28/2005 | Independance Construction MaterialsReported operatorA Ross MyersReported controller | Production / employmentSafety recordsView source coverage → |
| MorningstarCambria, PANear CressonMSHA 3608987 | Coal (Bituminous)Underground | AbandonedStatus date: 04/05/2016 | Tjs Mining IncReported operatorThomas J SmithReported controller | Neither history importedView source coverage → |
| Moros MineIndiana, PAMSHA 3602394 | Coal (Bituminous)Underground | AbandonedStatus date: 02/12/1976 | F P & K Coal CompanyReported operatorF P & K Coal CompanyReported controller | Neither history importedView source coverage → |
| Morrison FlagstoneSusquehanna, PANear ?MSHA 3605303 | Dimension Stone NECSurface | AbandonedStatus date: 04/24/1985 | Morrisons FlagstoneReported operatorMorrisons FlagstoneReported controller | Neither history importedView source coverage → |
| Morrison Pit And MillWarren, PAMSHA 3606104 | Construction Sand and GravelSurface | AbandonedStatus date: 12/20/1990 | Tionesta Sand & Gravel IncReported operatorColas S AReported controller | Neither history importedView source coverage → |
| Morrison QuarrySusquehanna, PANear ?MSHA 3607929 | Dimension Stone NECSurface | AbandonedStatus date: 08/10/1992 | Cecil Kilmer Bluestone QuarriesReported operatorKilmer CecilReported controller | Neither history importedView source coverage → |
| Morris Ridge StripColumbia, PANear Mount CarmelMSHA 3608611 | Coal (Anthracite)Facility | AbandonedStatus date: 08/30/2002 | Mid-Valley Coal Sales IncReported operatorVincent Guarna; Michael GuarnaReported controller | Production / employmentSafety recordsView source coverage → |
| Morris Ridge StrippingColumbia, PAMSHA 3602158 | Coal (Anthracite)Surface | AbandonedStatus date: 01/26/1973 | Kerris & Helfrick IncReported operatorEdward HelfrichReported controller | Neither history importedView source coverage → |
| Moser StripGreene, PANear MapletownMSHA 3607288 | Coal (Bituminous)Surface | AbandonedStatus date: 04/08/1988 | Viable Coal Corp IncReported operatorCampbell David OReported controller | Neither history importedView source coverage → |
| MoshannonElk, PANear BrockwayMSHA 3609214 | Coal (Bituminous)Surface | AbandonedStatus date: 07/20/2018 | Northern Son IncReported operatorFranklin S SchallReported controller | Production / employmentSafety recordsView source coverage → |
| Moss Creek No 3Cambria, PAMSHA 3600839 | Coal (Bituminous)Underground | AbandonedStatus date: 12/08/1971 | Barr Coal CorpReported operatorBearer Martin LReported controller | Neither history importedView source coverage → |
| Mottern HollowJefferson, PANear Sprankle MillsMSHA 3608476 | Coal (Bituminous)Surface | AbandonedStatus date: 08/21/1995 | Laurel Land Development IncReported operatorKenneth MorcheskyReported controller | Neither history importedView source coverage → |
| Mottern Strip MineElk, PAMSHA 3602757 | Coal (Bituminous)Surface | AbandonedStatus date: 02/16/1977 | Mottern Coal CompanyReported operatorMottern Floyd & Harold KReported controller | Neither history importedView source coverage → |
| MOTT QUARRYSusquehanna, PANear ApalachinMSHA 3608875 | Dimension SandstoneSurface | AbandonedStatus date: 06/05/2003 | Jb'S Excavation Services IncReported operatorJeffrey L BenthinReported controller | Production / employmentSafety recordsView source coverage → |
| Motycki StripWashington, PANear CharleroiMSHA 3606375 | Coal (Bituminous)Surface | AbandonedStatus date: 02/28/1992 | Cherokee Coal CompanyReported operatorCostolo ClelandReported controller | Neither history importedView source coverage → |
| Mountain-Detwiler JobFayette, PAMSHA 3605538 | Coal (Bituminous)Surface | AbandonedStatus date: 10/01/1979 | Kutsenkow Coal CompanyReported operatorKutsenkow GeorgeReported controller | Neither history importedView source coverage → |
| Mountaineer #1Somerset, PANear ShanksvilleMSHA 3608501 | Coal (Bituminous)Surface | AbandonedStatus date: 03/28/2024 | Mountaineer Mining CorporationReported operatorRobert George KovalReported controller | Production / employmentSafety recordsView source coverage → |
| Mountain Lilly JobColumbia, PANear AristesMSHA 3609236 | Coal (Anthracite)Facility | AbandonedStatus date: 04/22/2011 | High Mountain Coal CompanyReported operatorJohn D Broda; John BrodaReported controller | Production / employmentSafety recordsView source coverage → |
| Mountain Mine #1Somerset, PANear MeyersdaleMSHA 3606122 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 10/05/1982 | Fetterolf Mining Sales CompanyReported operatorFetterolf Group IncReported controller | Neither history importedView source coverage → |
| Mountainside BreakerSchuylkill, PANear TamaquaMSHA 3601924 | Coal (Anthracite)Facility | AbandonedStatus date: 07/24/1992 | Mountainside Coal CompanyReported operatorHabel RoyReported controller | Neither history importedView source coverage → |
| Mountain Side MineNorthumberland, PANear TrevortonMSHA 3609108 | Coal (Anthracite)Underground | Abandoned and SealedStatus date: 03/17/2004 | Mountain Side Coal Co.Reported operatorPete Shingara Jr; Clinton M WynnReported controller | Production / employmentSafety recordsView source coverage → |
| Mountain TopCentre, PANear SnowshoeMSHA 3608643 | Coal (Bituminous)Facility | AbandonedStatus date: 04/10/2009 | Mountain Top Coal Company IncorporatedReported operatorGary BerkleyReported controller | Production / employmentSafety recordsView source coverage → |
| Mount JoyClearfield, PANear ClearfieldMSHA 3609039 | Crushed, Broken SandstoneFacility | AbandonedStatus date: 12/07/2004 | HRI, IncReported operatorColas S AReported controller | Production / employmentSafety recordsView source coverage → |
| Mount Pleasant StripWestmoreland, PANear Mount PleasantMSHA 3607620 | Coal (Bituminous)Surface | AbandonedStatus date: 04/17/1987 | Simpson Coal CompanyReported operatorDonald SimpsonReported controller | Neither history importedView source coverage → |
| Mount Union QuarryHuntingdon, PAMSHA 3600106 | Crushed, Broken SandstoneSurface | AbandonedStatus date: 01/04/1983 | Harbison-Walker Refractories U SReported operatorDresser Industries IncReported controller | Neither history importedView source coverage → |
| Mount Union Quarry And MillHuntingdon, PAMSHA 3600180 | Crushed, Broken SandstoneFacility | AbandonedStatus date: 05/21/1982 | North American Refractories CompanyReported operatorDidier-Werke AgReported controller | Neither history importedView source coverage → |