| Marble MountainWashington, UTNear EnterpriseMSHA 4202394 | Construction Sand and GravelSurface | AbandonedStatus date: 05/16/2016 | TAMG Minerals Inc.Reported operatorTransnational Group IncReported controller | Production / employmentSafety recordsView source coverage → |
| Markey MineSan Juan, UTMSHA 4200784 | Uranium OreUnderground | AbandonedStatus date: 08/24/1984 | Markey Mines IncReported operatorBlack CalvinReported controller | Neither history importedView source coverage → |
| Marshall MinesGrand, UTMSHA 4201721 | Gold OreSurface | AbandonedStatus date: 06/23/1982 | L & M Oro Ii IncReported operatorL & M Oro Ii IncReported controller | Neither history importedView source coverage → |
| Marshbank MineEmery, UTMSHA 4201549 | Uranium OreUnderground | AbandonedStatus date: 09/09/1980 | Larry Perkins CompanyReported operatorPerkins Larry CompanyReported controller | Neither history importedView source coverage → |
| Martin Marietta Cement PlantJuab, UTMSHA 4201672 | CementFacility | AbandonedStatus date: 12/18/1980 | Martin Marietta CementReported operatorMartin Marietta Materials IncReported controller | Neither history importedView source coverage → |
| MayDay MillGarfield, UTNear HanksvilleMSHA 4202597 | Gold OreSurface | AbandonedStatus date: 02/03/2014 | MayDay Mining, LLC Reported operatorDusten L Heugly; Dan W McKayReported controller | Neither history importedView source coverage → |
| Mayfield PitSanpete, UTNear MayfieldMSHA 4202309 | Dimension LimestoneSurface | AbandonedStatus date: 01/04/2010 | Central Utah StoneReported operatorBryce H HaasReported controller | Production / employmentSafety recordsView source coverage → |
| Mayflower MineSummit, UTMSHA 4200144 | Silver OreUnderground | AbandonedStatus date: 08/31/1983 | Barite Mining IncReported operatorNewpark Resources IncReported controller | Neither history importedView source coverage → |
| Mc Cahill Thompson MineIron, UTMSHA 4200745 | Iron OreSurface | AbandonedStatus date: 04/04/1980 | Utah International IncReported operatorGeneral Electric CompanyReported controller | Neither history importedView source coverage → |
| Mc Cormick DriftSan Juan, UTMSHA 4201196 | Uranium OreUnderground | AbandonedStatus date: 06/29/1988 | V & S MiningReported operatorVern ShumwayReported controller | Neither history importedView source coverage → |
| MckenzieSan Juan, UTMSHA 4201364 | Uranium OreUnderground | AbandonedStatus date: 03/13/1979 | K-EnterprisesReported operatorK-EnterprisesReported controller | Neither history importedView source coverage → |
| M E I Rock Products PitSalt Lake, UTMSHA 4201930 | Construction Sand and GravelSurface | AbandonedStatus date: 10/13/1987 | M E I Rock ProductsReported operatorMoulton A BlaineReported controller | Neither history importedView source coverage → |
| Merrico Corp Pit No 1Salt Lake, UTMSHA 4200916 | Construction Sand and GravelSurface | AbandonedStatus date: 05/21/1979 | Merrico IncReported operatorMerrico IncReported controller | Neither history importedView source coverage → |
| MetsoMorgan, UTNear MorganMSHA 4202543 | Construction Sand and GravelSurface | AbandonedStatus date: 08/05/2013 | Rawson Development, Inc.Reported operatorDavid RawsonReported controller | Production / employmentSafety recordsView source coverage → |
| METZ HOLLOWMorgan, UTNear MorganMSHA 4202140 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 06/02/2003 | Wilkinson Construction Company, IncReported operatorJohn B WilkinsonReported controller | Production / employmentSafety recordsView source coverage → |
| Mexican Hat PitSan Juan, UTMSHA 4201619 | Construction Sand and GravelSurface | AbandonedStatus date: 08/12/1985 | Gibralter Gravel CompanyReported operatorBenally MerrillReported controller | Neither history importedView source coverage → |
| Milford PitBeaver, UTNear MilfordMSHA 4202732 | Construction Sand and GravelSurface | AbandonedStatus date: 08/03/2022 | RAM-X Inc.Reported operatorRoger R Peck; Melissa A PeckReported controller | Production / employmentView source coverage → |
| Millcreek Burnt ShaleKane, UTNear KanabMSHA 4202647 | Construction Sand and GravelSurface | AbandonedStatus date: 08/29/2016 | Skutmpah Enterprises, LLCReported operatorBrent RobinsonReported controller | Neither history importedView source coverage → |
| MILLER ROCKEmery, UTMSHA 4201954 | Common Clays NECUnderground | AbandonedStatus date: 08/04/1998 | Hub Research & Development CompanyReported operatorClark Bret WReported controller | Neither history importedView source coverage → |
| Miller Sand And GravelGrand, UTMSHA 4201118 | Construction Sand and GravelSurface | AbandonedStatus date: 11/30/1978 | Moab Ready Mix Company IncReported operatorThayn LloydReported controller | Neither history importedView source coverage → |
| Million Dollar GulchGarfield, UTMSHA 4201763 | Gold OreSurface | AbandonedStatus date: 09/03/1982 | Buffalo Mining CompanyReported operatorBuffalo Mining CompanyReported controller | Neither history importedView source coverage → |
| MillstreamWasatch, UTNear Heber CityMSHA 4202474 | Construction Sand and GravelSurface | AbandonedStatus date: 08/13/2007 | Millstream Equipment Co. LLCReported operatorDavid NelsonReported controller | Production / employmentSafety recordsView source coverage → |
| Millville PitCache, UTMSHA 4201243 | Construction Sand and GravelSurface | AbandonedStatus date: 04/17/1981 | L A Zollinger & Sons IncReported operatorL A Zollinger & Sons IncReported controller | Neither history importedView source coverage → |
| MINCHEY GRAVEL PITEmery, UTMSHA 4202211 | Construction Sand and GravelSurface | AbandonedStatus date: 06/09/2002 | Minchey DiggingReported operatorWilliam H Minchey et elReported controller | Production / employmentSafety recordsView source coverage → |
| Minchey PitCarbon, UTMSHA 4201684 | Construction Sand and GravelSurface | AbandonedStatus date: 08/25/1983 | Minchey DiggingReported operatorMinchey DiggingReported controller | Neither history importedView source coverage → |
| Minchey Pit #2Emery, UTMSHA 4201762 | Construction Sand and GravelSurface | AbandonedStatus date: 04/22/1983 | Eddy Shaw Construcion CompanyReported operatorShaw EddyReported controller | Neither history importedView source coverage → |
| Mine No 9Emery, UTMSHA 4201222 | Uranium OreUnderground | AbandonedStatus date: 06/06/1978 | Birch Mining CompanyReported operatorArthur Marion BirchReported controller | Neither history importedView source coverage → |
| Mineral PolarGrand, UTMSHA 4200467 | Uranium OreUnderground | AbandonedStatus date: 09/03/1980 | Alvin Dee MiningReported operatorJohnston Vion LReported controller | Neither history importedView source coverage → |
| Mineral Treasure No 1Grand, UTMSHA 4201630 | Uranium OreUnderground | AbandonedStatus date: 05/13/1980 | Yellow Cat EnterprisesReported operatorYellow Cat EnterprisesReported controller | Neither history importedView source coverage → |
| Mi Vida No 2San Juan, UTMSHA 4201016 | Uranium OreUnderground | AbandonedStatus date: 07/24/1985 | Mineral Mining CompanyReported operatorButt Jim CReported controller | Neither history importedView source coverage → |