| Material Girl Sand & Gravel, LLCPike, PANear MilfordMSHA 3609143 | Construction Sand and GravelSurface | AbandonedStatus date: 10/19/2004 | Material Girl Sand & Gravel ,LLCReported operatorDonna J KehrReported controller | Production / employmentSafety recordsView source coverage → |
| Materials Transportation AssociatesSomerset, PANear BerlinMSHA 3606789 | Coal (Bituminous)Facility | AbandonedStatus date: 09/27/1989 | Materials Transportation AssociatesReported operatorFlocos Ted & Curt StaufferReported controller | Neither history importedView source coverage → |
| MatherGreene, PANear Mather, Pa.MSHA 3608815 | Coal (Bituminous)Facility | AbandonedStatus date: 01/06/2005 | Mather Recovery Systems LLCReported operatorAnthony J Julian; Stanley M SearsReported controller | Production / employmentSafety recordsView source coverage → |
| Mather StripGreene, PANear JeffersonMSHA 3608572 | Coal (Bituminous)Surface | AbandonedStatus date: 07/31/2018 | C J & L CoalReported operatorJoseph Balazick; Louis BalazickReported controller | Production / employmentSafety recordsView source coverage → |
| Mather StripGreene, PANear NemacolinMSHA 3609694 | Coal (Bituminous)Surface | AbandonedStatus date: 06/13/2012 | Penn Development Services, L.P.Reported operatorDonald R. GearhartReported controller | Production / employmentSafety recordsView source coverage → |
| Mathews MineGreene, PANear TaylortownMSHA 3607080 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 11/07/1994 | Concorde CorpReported operatorJames L LauritaReported controller | Neither history importedView source coverage → |
| Mathews Surface MineGreene, PANear TaylortownMSHA 3608765 | Coal (Bituminous)Surface | AbandonedStatus date: 03/25/2005 | Coresco LLCReported operatorMepco Intermediate Holdings, LLCReported controller | Production / employmentSafety recordsView source coverage → |
| MathiesWashington, PANear New EagleMSHA 3600963 | Coal (Bituminous)Underground | AbandonedStatus date: 05/11/2006 | Mon-View Mining CorpReported operatorJoseph P TassoneReported controller | Production / employmentSafety recordsView source coverage → |
| Mathieson Coal TippleButler, PAMSHA 3604149 | Coal (Bituminous)Surface | AbandonedStatus date: 06/20/1974 | Thomas B Mathieson Coal CoReported operatorMathieson Thomas B Coal CompanyReported controller | Neither history importedView source coverage → |
| Mathieson StripButler, PAMSHA 3603541 | Coal (Bituminous)Surface | AbandonedStatus date: 11/20/1973 | Thomas B Mathieson Coal CoReported operatorMathieson Thomas B Coal CompanyReported controller | Neither history importedView source coverage → |
| MATT KILMER FLAGSTONEWayne, PANear WinterdaleMSHA 3610214 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 06/18/2025 | MATT KILMER FLAGSTONE LLCReported operatorMatt A KilmerReported controller | Production / employmentSafety recordsView source coverage → |
| Mattson QuarryBradford, PANear CamptownMSHA 3609294 | Dimension SlateSurface | AbandonedStatus date: 05/20/2008 | Bennett StoneReported operatorAnthony P BennettReported controller | Production / employmentSafety recordsView source coverage → |
| Matway SiteWashington, PANear BentleyvilleMSHA 3608364 | Coal (Bituminous)Facility | AbandonedStatus date: 12/31/2000 | Reichard Contracting IncReported operatorBrian K ReichardReported controller | Production / employmentSafety recordsView source coverage → |
| Maude MineAllegheny, PANear Rte 978, Cuddy, PaMSHA 3607977 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 01/11/1996 | Mohawk Mining CompanyReported operatorBaker Edward LReported controller | Neither history importedView source coverage → |
| Mauersburg TipplesClarion, PAMSHA 3604017 | Coal (Bituminous)Facility | AbandonedStatus date: 11/11/1975 | Mauersberg Coal CompanyReported operatorMauersberg Richard-Kenneth-Gerald & RobertReported controller | Neither history importedView source coverage → |
| Mauk MineJefferson, PANear SummervilleMSHA 3608361 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 08/28/1993 | Doverspike Brothers Coal CompanyReported operatorStanford EnergyReported controller | Neither history importedView source coverage → |
| Mauk Mine (Strip No 1)Jefferson, PAMSHA 3605661 | Coal (Bituminous)Surface | AbandonedStatus date: 03/09/1976 | Markle Bullers Coal CompanyReported operatorRinggold Mines IncReported controller | Neither history importedView source coverage → |
| Mausdale QuarryColumbia, PANear BloomsburgMSHA 3600512 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 10/21/2008 | Knorr Contracting IncReported operatorJames W KnorrReported controller | Production / employmentSafety recordsView source coverage → |
| Mausdale Quarry Co Plant 1Montour, PANear NAMSHA 3600159 | Sand, CommonSurface | AbandonedStatus date: 10/21/1980 | Lycoming Silica Sand CompanyReported operatorHanson PLCReported controller | Neither history importedView source coverage → |
| Mauthe StripClarion, PAMSHA 3606510 | Coal (Bituminous)Surface | AbandonedStatus date: 10/01/1979 | M S M Coal Company IncReported operatorDonald F MautheReported controller | Neither history importedView source coverage → |
| Mayberry Pit And MillLawrence, PAMSHA 3605988 | Construction Sand and GravelSurface | AbandonedStatus date: 11/19/1986 | Mayberry SupplyReported operatorMayberry SupplyReported controller | Neither history importedView source coverage → |
| Maybro Materials Edinboro Pit 2Erie, PAMSHA 3606661 | Construction Sand and GravelSurface | AbandonedStatus date: 09/19/1996 | Maybro Asphalt CompanyReported operatorLaver John H IiiReported controller | Neither history importedView source coverage → |
| Mayfield BankLackawanna, PANear MayfieldMSHA 3607209 | Coal (Anthracite)Facility | AbandonedStatus date: 04/22/1983 | W E Frederick IncReported operatorFrederick William EReported controller | Neither history importedView source coverage → |
| Mayfield QuarryLackawanna, PANear JermynMSHA 3610157 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 01/12/2016 | Jermyn SupplyReported operatorJoe G VirbitskyReported controller | Safety recordsView source coverage → |
| Mayo OperationJefferson, PANear CorsicaMSHA 3610256 | Coal (Bituminous)Surface | AbandonedStatus date: 12/06/2022 | P & N Coal Company IncReported operatorPrushnok Coal Company IncReported controller | Production / employmentSafety recordsView source coverage → |
| Mays StripClarion, PANear ClarionMSHA 3600864 | Coal (Bituminous)Surface | AbandonedStatus date: 09/10/1984 | Mays Coal CompanyReported operatorMays James AReported controller | Neither history importedView source coverage → |
| Maysville Cleaning PlantNorthumberland, PANear KulpmontMSHA 3605462 | Coal (Anthracite)Facility | AbandonedStatus date: 11/07/1988 | Rosini Coal CompanyReported operatorOdone A RosiniReported controller | Neither history importedView source coverage → |
| Maysville Coal Co IncArmstrong, PANear MaysvilleMSHA 3601573 | Coal (Bituminous)Surface | AbandonedStatus date: 11/10/1983 | Maysville Coal Company IncReported operatorAnkeny Donald KReported controller | Neither history importedView source coverage → |
| Maysville StripNorthumberland, PANear KulpmontMSHA 3602157 | Coal (Anthracite)Surface | AbandonedStatus date: 03/02/1990 | Rosini Coal CompanyReported operatorOdone A RosiniReported controller | Neither history importedView source coverage → |
| MazzariniAllegheny, PANear OakdaleMSHA 3607176 | Coal (Bituminous)Surface | AbandonedStatus date: 10/24/1983 | Mazzarini CoalReported operatorMazzarini Louis & PaulReported controller | Neither history importedView source coverage → |