| Lincoln Gulch MineJefferson, MTMSHA 2401725 | Gold OreSurface | AbandonedStatus date: 03/18/1985 | Nrs IncReported operatorNugent George A-John F Ratchye & Emerson W ScottReported controller | Neither history importedView source coverage → |
| Linde PitRichland, MTNear WillistonMSHA 2402629 | Construction Sand and GravelSurface | AbandonedStatus date: 12/14/2015 | Summit Energy ServicesReported operatorMike SweeneyReported controller | Production / employmentSafety recordsView source coverage → |
| Little BuckLincoln, MTMSHA 2401699 | Gold OreSurface | AbandonedStatus date: 09/16/1983 | Gene WillisonReported operatorGene WillisonReported controller | Neither history importedView source coverage → |
| Little GoldieJefferson, MTMSHA 2401880 | Gold OreUnderground | AbandonedStatus date: 09/26/1989 | Caboose Mining CompanyReported operatorCaboose Mining CompanyReported controller | Neither history importedView source coverage → |
| Little GrizzlyRavalli, MTNear HamiltonMSHA 2402412 | Construction Sand and GravelSurface | AbandonedStatus date: 05/31/2006 | J5 Construction IncReported operatorMorris T JessopReported controller | Production / employmentView source coverage → |
| Little LodeMadison, MTNear Virginia CityMSHA 2402469 | Gold OreUnderground | AbandonedStatus date: 09/28/2007 | Glovin- Lipman, LLCReported operatorLarry Lipman; Steve P. GlovinReported controller | Production / employmentSafety recordsView source coverage → |
| Little RockPowder River, MTNear BiddleMSHA 2402609 | Construction Sand and GravelSurface | AbandonedStatus date: 06/20/2012 | Five Star Roustabout, Inc.Reported operatorLori Fortner; Joe FortnerReported controller | Safety recordsView source coverage → |
| Livingstone QuarrySanders, MTNear PlainsMSHA 2402249 | Dimension Stone NECSurface | AbandonedStatus date: 06/23/2006 | Withstone LLCReported operatorSteven LundReported controller | Production / employmentSafety recordsView source coverage → |
| Lodestar Gold Hill MineSweet Grass, MTNear Big TimberMSHA 2402189 | Gold OreUnderground | AbandonedStatus date: 02/14/2007 | Lodestar Mining & ExplorationReported operatorPeter C NorthcuttReported controller | Production / employmentSafety recordsView source coverage → |
| LOLO SAND & GRAVELMissoula, MTMSHA 2402166 | Construction Sand and GravelSurface | AbandonedStatus date: 08/23/2001 | Lolo Sand & GravelReported operatorDick MarickReported controller | Production / employmentSafety recordsView source coverage → |
| Loon LakeFlathead, MTNear Columbia FallsMSHA 2402279 | Dimension Stone NECSurface | AbandonedStatus date: 04/29/2005 | Rocky Mountain Rock IncReported operatorRichard Paul Lewis; Melissa L LewisReported controller | Production / employmentSafety recordsView source coverage → |
| Lory #1 & #2Powell, MTMSHA 2401641 | Gold OreSurface | AbandonedStatus date: 10/15/1983 | T & B Mining IncReported operatorTimothy W WareReported controller | Neither history importedView source coverage → |
| Lotta TunnelJefferson, MTMSHA 2401055 | Gold OreUnderground | AbandonedStatus date: 04/02/1984 | Gladstone Crushing & Construction IncReported operatorMartyn SalussoReported controller | Neither history importedView source coverage → |
| Lottie And Ida MinesMadison, MTMSHA 2401629 | Gold OreUnderground | AbandonedStatus date: 08/02/1982 | Mining Investments IncReported operatorMining Investments IncReported controller | Neither history importedView source coverage → |
| Lower Suprise HillLincoln, MTNear LibbyMSHA 2402347 | Dimension Stone NECSurface | AbandonedStatus date: 04/29/2005 | Rocky Mountain Rock IncReported operatorRichard Paul Lewis; Melissa L LewisReported controller | Production / employmentView source coverage → |
| Lowland Creek PlacerJefferson, MTMSHA 2401553 | Gold OreSurface | AbandonedStatus date: 02/02/1981 | G M R Resources CompanyReported operatorHatfield Koyle & DavidReported controller | Neither history importedView source coverage → |
| LS Jensen-Portable CrusherMissoula, MTMSHA 2401765 | Construction Sand and GravelSurface | AbandonedStatus date: 05/29/2002 | L S Jensen Construction & PavingReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| LS Jensen Screen PlantMissoula, MTNear MissoluaMSHA 2402185 | Construction Sand and GravelSurface | AbandonedStatus date: 04/23/2024 | Montana Mtls & ConsReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| LS Jensen Wash PlantMissoula, MTNear MissoulaMSHA 2401820 | Construction Sand and GravelSurface | AbandonedStatus date: 04/23/2024 | Montana Mtls & ConsReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| L S READY MIX CONCRETE INCBeaverhead, MTMSHA 2400425 | Construction Sand and GravelSurface | AbandonedStatus date: 08/13/2001 | L S Ready Mix ConcreteReported operatorLois L SmithReported controller | Production / employmentSafety recordsView source coverage → |
| Lucille #1Madison, MTMSHA 2401663 | TalcSurface | AbandonedStatus date: 09/22/1983 | Antler Mining CompanyReported operatorNolte Robert & Sylvan Donegan JrReported controller | Neither history importedView source coverage → |
| Lucky Lady MineGranite, MTMSHA 2401518 | Silver OreUnderground | AbandonedStatus date: 06/03/1980 | Mile-Hi Mining IncReported operatorRobert LongReported controller | Neither history importedView source coverage → |
| Lucky SilverMadison, MTMSHA 2401459 | Silver OreUnderground | AbandonedStatus date: 09/20/1979 | Lucky StrikeReported operatorLucky StrikeReported controller | Neither history importedView source coverage → |
| Lunda PortableToole, MTMSHA 2401927 | Construction Sand and GravelSurface | AbandonedStatus date: 04/09/1991 | Lunda Redi Mix IncReported operatorAlbert F LundaReported controller | Neither history importedView source coverage → |
| Lyght RockSanders, MTNear PlainsMSHA 2402445 | Dimension Stone NECSurface | AbandonedStatus date: 05/21/2006 | Dennis LyghtReported operatorDennis L. LyghtReported controller | Neither history importedView source coverage → |
| Madison MineMadison, MTNear Silver StarMSHA 2402467 | Copper Ore NECUnderground | AbandonedStatus date: 10/29/2019 | Broadway Gold CorporationReported operatorBroadway Gold Mining LtdReported controller | Production / employmentSafety recordsView source coverage → |
| Maginnis MineFergus, MTNear LewistownMSHA 2402759 | Gold OreSurface | AbandonedStatus date: 10/01/2021 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Maginnis Mine Fergus, MTMSHA 2401855 | Gold OreSurface | AbandonedStatus date: 07/01/1991 | Oro Cache LLPReported operatorJerry D HanleyReported controller | Neither history importedView source coverage → |
| Maiden Rock Silica QuarrySilver Bow, MTMSHA 2400077 | Crushed, Broken SandstoneSurface | AbandonedStatus date: 09/01/1995 | Rhone Poulenc North American ChemicalsReported operatorRhone-Poulenc S AReported controller | Neither history importedView source coverage → |
| Malta MinePhillips, MTMSHA 2401435 | Common Clays NECSurface | AbandonedStatus date: 05/06/1987 | American Colloid Company Minerals GroupReported operatorMinerals Technologies IncReported controller | Neither history importedView source coverage → |