| Brandon'S S & G Portable CrusherPark, MTMSHA 2401808 | Construction Sand and GravelSurface | AbandonedStatus date: 08/02/1988 | Brandon'S Construction IncReported operatorBrandon DuaneReported controller | Neither history importedView source coverage → |
| BRIGGS PITJefferson, MTMSHA 2402059 | Construction Sand and GravelSurface | AbandonedStatus date: 02/12/2001 | Briggs Sand & GravelReported operatorDean BriggsReported controller | Production / employmentSafety recordsView source coverage → |
| Broadway VictoriaMadison, MTMSHA 2401639 | Gold OreUnderground | AbandonedStatus date: 07/29/1982 | Victoria Mines IncReported operatorReddish Jane PReported controller | Neither history importedView source coverage → |
| Browns Gulch PlacerMadison, MTMSHA 2401558 | Gold OreSurface | AbandonedStatus date: 09/01/1995 | Great Rocky Mountain Mining CorpReported operatorHamilton Rex & KennethReported controller | Neither history importedView source coverage → |
| Browns QuarryDeer Lodge, MTMSHA 2400004 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/25/1983 | Stanco-General J VReported operatorStanco-General J VReported controller | Neither history importedView source coverage → |
| Buffalo Head RockSanders, MTNear LonepineMSHA 2402273 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 08/12/2003 | Buffalo Head RockReported operatorKurt BeerntsenReported controller | Production / employmentSafety recordsView source coverage → |
| BullionJefferson, MTMSHA 2401730 | Silver OreSurface | AbandonedStatus date: 09/01/1983 | Crystal Northwest Mines IncReported operatorCrystal Northwest Mines IncReported controller | Neither history importedView source coverage → |
| Bull Mountain Mine No.1Musselshell, MTNear RoundupMSHA 2402471 | Coal (Bituminous)Surface | AbandonedStatus date: 03/01/2007 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Bull Mountains Mine No 1Musselshell, MTNear Roundup, Mt 59072MSHA 2401975 | Coal (Bituminous)Underground | AbandonedStatus date: 09/01/1995 | Meridian Minerals CompanyReported operatorBurlington ResourcesReported controller | Neither history importedView source coverage → |
| Bull Mountain Tain Test PitMusselshell, MTMSHA 2400251 | Coal (Bituminous)Surface | AbandonedStatus date: 06/06/1972 | Consolidation Coal CompanyReported operatorRobert E MurrayReported controller | Neither history importedView source coverage → |
| Bull Mountain Test PitMusselshell, MTNear RoundupMSHA 2401884 | Coal (Bituminous)Surface | AbandonedStatus date: 07/24/1997 | Mountain IncReported operatorJohn P Baugues JrReported controller | Neither history importedView source coverage → |
| ButteSilver Bow, MTNear ButteMSHA 2402739 | Construction Sand and GravelSurface | AbandonedStatus date: 07/23/2020 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Butte HighlandsSilver Bow, MTNear ButteMSHA 2402563 | Gold OreUnderground | AbandonedStatus date: 07/09/2015 | Highland Mining LLC.Reported operatorSima MuroffReported controller | Production / employmentSafety recordsView source coverage → |
| Butte Silver Bow CrusherSilver Bow, MTNear ButteMSHA 2401907 | Construction Sand and GravelSurface | AbandonedStatus date: 01/21/2021 | Butte Silver Bow CountyReported operatorButte-Silver Bow County-MtReported controller | Production / employmentSafety recordsView source coverage → |
| C-11 PortableBig Horn, MTMSHA 2401824 | Construction Sand and GravelSurface | AbandonedStatus date: 09/04/1987 | Gravel Products IncReported operatorJoel Schriock; Hallie Lock; William Todd SchriockReported controller | Neither history importedView source coverage → |
| Cable MineDeer Lodge, MTMSHA 2401704 | Gold OreSurface | AbandonedStatus date: 04/08/1992 | Cable Mountain Mine IncReported operatorAidlin Joseph WReported controller | Neither history importedView source coverage → |
| CAMASSanders, MTNear PlainsMSHA 2402242 | Dimension Stone NECSurface | AbandonedStatus date: 07/28/2003 | Big Sky Rock Supply IncReported operatorEd Josephson; Lisa JosephsonReported controller | Production / employmentSafety recordsView source coverage → |
| Camas PrairieSanders, MTNear Camas Prairie PlainsMSHA 2402302 | Crushed, Broken Stone NECSurface | AbandonedStatus date: 09/05/2004 | Don SchultzReported operatorDon SchultzReported controller | Neither history importedView source coverage → |
| Camas Prairie OperationSanders, MTNear Hot SpringsMSHA 2402459 | Dimension Stone NECSurface | AbandonedStatus date: 02/22/2012 | Wildhorse Stone Supply Co.Reported operatorSteve D BlanchardReported controller | Production / employmentSafety recordsView source coverage → |
| Camco Incorporated Portable CrusherLincoln, MTMSHA 2401826 | Construction Sand and GravelSurface | AbandonedStatus date: 09/19/1986 | Camco IncReported operatorCampbell RogerReported controller | Neither history importedView source coverage → |
| Camel HumpGranite, MTNear DrummondMSHA 2402680 | Construction Sand and GravelSurface | AbandonedStatus date: 11/18/2014 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Cameron PitMadison, MTNear EnnisMSHA 2402506 | Construction Sand and GravelSurface | AbandonedStatus date: 10/15/2010 | Matson ExcavationReported operatorGordon D MatsonReported controller | Production / employmentSafety recordsView source coverage → |
| Camp RobberMeagher, MTMSHA 2400350 | Gold OreSurface | AbandonedStatus date: 09/01/1987 | E L BurnsReported operatorBurns E LReported controller | Neither history importedView source coverage → |
| Camyon Ferry MineCarbon, MTMSHA 2402020 | GemstonesSurface | AbandonedStatus date: 07/06/1994 | Canyon Ferry Mining Enterprises IncReported operatorLotzer LynnReported controller | Neither history importedView source coverage → |
| Cannivan Gulch ProjectBeaverhead, MTMSHA 2401590 | Molybdenum OreUnderground | AbandonedStatus date: 05/17/1983 | Cyprus Industrial Minerals CompanyReported operatorCyprus Amax Minerals CompanyReported controller | Neither history importedView source coverage → |
| Canyon Creek Mine & MillLewis And Clark, MTMSHA 2401506 | Gold OreFacility | AbandonedStatus date: 07/01/1981 | Montana Mineral Extraction CorpReported operatorMontana Mineral Extraction CorpReported controller | Neither history importedView source coverage → |
| Cap Wallace MineMissoula, MTMSHA 2401673 | Barite Barium OreUnderground | AbandonedStatus date: 08/30/1982 | Wayne Clutis Mining IncReported operatorClutis Wayne EReported controller | Neither history importedView source coverage → |
| Carbon County Portable CrusherCarbon, MTMSHA 2401491 | Construction Sand and GravelSurface | AbandonedStatus date: 08/18/1982 | Carbon CountyReported operatorCarbon CountyReported controller | Neither history importedView source coverage → |
| CaretakerLewis And Clark, MTNear MarysvilleMSHA 2402622 | Gold OreSurface | AbandonedStatus date: 10/01/2014 | American Innovative MineralsReported operatorAlan BranhamReported controller | Production / employmentSafety recordsView source coverage → |
| Carleson MineJefferson, MTMSHA 2401616 | Gold OreSurface | AbandonedStatus date: 07/29/1982 | Wildfire MiningReported operatorHatfield Koyle & DavidReported controller | Neither history importedView source coverage → |