| Clark Brothers Universal #1Ravalli, MTMSHA 2401548 | Construction Sand and GravelSurface | AbandonedStatus date: 09/07/1984 | Clark Brothers ContractorsReported operatorClark Brothers ContractorsReported controller | Neither history importedView source coverage → |
| CLARKE PITRavalli, MTNear kalispellMSHA 2402223 | Construction Sand and GravelSurface | AbandonedStatus date: 07/23/2003 | R B CReported operatorRodney B ClarkReported controller | Production / employmentSafety recordsView source coverage → |
| Clark Gulch QuarryJefferson, MTMSHA 2401570 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 04/10/1981 | Raiser Cement CorpReported operatorRaiser Cement CorpReported controller | Neither history importedView source coverage → |
| Cleveland MineMadison, MTMSHA 2401075 | Gold OreUnderground | AbandonedStatus date: 07/22/1981 | Ibex ConstructionReported operatorIbex ConstructionReported controller | Neither history importedView source coverage → |
| CN Portable 1Gallatin, MTNear BozemanMSHA 2402666 | Gold OreSurface | AbandonedStatus date: 07/20/2015 | Childs and Nicholls, LLCReported operatorJoe L Nicholls; John ChildsReported controller | Production / employmentView source coverage → |
| Coal Creek MinePowder River, MTNear AshlandMSHA 2400104 | Coal (Lignite)Facility | AbandonedStatus date: 12/23/1982 | Coal Creek Mining CompanyReported operatorTonnemaker F ClaytonReported controller | Neither history importedView source coverage → |
| Cochran PitMineral, MTMSHA 2401393 | Construction Sand and GravelSurface | AbandonedStatus date: 09/28/1983 | Washington Construction CompanyReported operatorWashington Group International IncReported controller | Neither history importedView source coverage → |
| COLEMAN CONSTRUCTION, INC.Beaverhead, MTNear DillonMSHA 2402201 | Construction Sand and GravelSurface | AbandonedStatus date: 07/26/2007 | Coleman Construction IncReported operatorFred R Coleman; Kathy T ColemanReported controller | Production / employmentSafety recordsView source coverage → |
| Coleman Screen PlantBeaverhead, MTNear DillonMSHA 2402383 | Construction Sand and GravelSurface | AbandonedStatus date: 06/30/2005 | Coleman Construction IncReported operatorFred R Coleman; Kathy T ColemanReported controller | Production / employmentView source coverage → |
| Connors Drill SiteCascade, MTMSHA 2401392 | Molybdenum OreSurface | AbandonedStatus date: 06/13/1978 | Connors Drilling IncReported operatorConnors Drilling IncReported controller | Neither history importedView source coverage → |
| Conrad Sand & Gravel Redi-Mix IncPondera, MTNear ConradMSHA 2401306 | Construction Sand and GravelSurface | AbandonedStatus date: 06/30/2006 | Conrad Sand & Gravel Redi-Mix IncReported operatorCraig Hanson; James RohrerReported controller | Production / employmentSafety recordsView source coverage → |
| Constellation & Gilliam GroupMadison, MTMSHA 2401734 | VermiculiteSurface | AbandonedStatus date: 05/10/1984 | W G ForbesReported operatorForbes W GReported controller | Neither history importedView source coverage → |
| Copper Creek GroupLincoln, MTMSHA 2401717 | Silver OreUnderground | AbandonedStatus date: 08/31/1983 | Copper Creek Mining & MillingReported operatorAdair EldonReported controller | Neither history importedView source coverage → |
| CORONASanders, MTNear Thompson FallsMSHA 2402243 | Dimension Stone NECSurface | AbandonedStatus date: 08/18/2003 | Anderson Jacob Rock SalesReported operatorJacob S AndersenReported controller | Production / employmentView source coverage → |
| Cow Creek Mine (Ug)Musselshell, MTMSHA 2400120 | Coal (Bituminous)Underground | AbandonedStatus date: 10/22/1970 | Cow Creek Coal CompanyReported operatorCow Creek Coal CompanyReported controller | Neither history importedView source coverage → |
| Cox'S MasonryMadison, MTMSHA 2402007 | Dimension SlateSurface | AbandonedStatus date: 03/24/1995 | Cox'S MasonryReported operatorCox GeorgeReported controller | Neither history importedView source coverage → |
| CP-1Roosevelt, MTNear BainvilleMSHA 3201020 | Construction Sand and GravelSurface | AbandonedStatus date: 05/14/2024 | Storbakken & Sons Construction IncReported operatorDustin Mortenson; Jason StorbakkenReported controller | Production / employmentSafety recordsView source coverage → |
| Cr 1Silver Bow, MTMSHA 2401479 | Construction Sand and GravelSurface | AbandonedStatus date: 07/27/1983 | Dugdale Construction Company IncReported operatorDugdale Stanford OReported controller | Neither history importedView source coverage → |
| CR 1Ravalli, MTNear HamiltonMSHA 2402530 | Construction Sand and GravelSurface | AbandonedStatus date: 01/01/2017 | J5 ConstructionReported operatorMorris T JessopReported controller | Production / employmentSafety recordsView source coverage → |
| Crackerville Sand & GravelDeer Lodge, MTMSHA 2401932 | Construction Sand and GravelSurface | AbandonedStatus date: 09/07/1995 | Golden Technology IncReported operatorHelm Bill SReported controller | Neither history importedView source coverage → |
| Crazy Mountain Rock IncGallatin, MTNear LivingstonMSHA 2402282 | Construction Sand and GravelSurface | AbandonedStatus date: 01/01/2009 | Crazy Mountain Rock IncReported operatorJeremy D Shea; Dan V BatesReported controller | Production / employmentSafety recordsView source coverage → |
| CrenshawJefferson, MTMSHA 2401766 | Gold OreSurface | AbandonedStatus date: 04/22/1988 | Mount Heagan Development IncReported operatorMount Heagan Development IncReported controller | Neither history importedView source coverage → |
| Creston Maintenance SiteFlathead, MTNear BigforkMSHA 2402814 | Construction Sand and GravelSurface | AbandonedStatus date: 07/14/2025 | Prime Cut Construction LLCReported operatorTim SarkkinenReported controller | Safety recordsView source coverage → |
| CRESTON SAND & GRAVELFlathead, MTMSHA 2402132 | Construction Sand and GravelSurface | AbandonedStatus date: 09/28/1999 | Creston Sand & GravelReported operatorMc Kinley R CecilReported controller | Neither history importedView source coverage → |
| Crevice MinePark, MTNear GardinerMSHA 2402740 | Gold OreSurface | AbandonedStatus date: 10/29/2019 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Crisaffuli PitDawson, MTMSHA 2401551 | Construction Sand and GravelSurface | AbandonedStatus date: 08/17/1983 | Duininck Brothers & GilchristReported operatorDuininck CompaniesReported controller | Neither history importedView source coverage → |
| CrusherGallatin, MTNear BozemanMSHA 2401462 | Construction Sand and GravelSurface | AbandonedStatus date: 04/29/2026 | Kenyon Noble Ready MixReported operatorRichard J OgleReported controller | Production / employmentSafety recordsView source coverage → |
| CRUSHERRavalli, MTNear CorvallisMSHA 2402154 | Construction Sand and GravelSurface | AbandonedStatus date: 08/04/2006 | John Schlecht ExcavatingReported operatorJohn SchlechtReported controller | Production / employmentSafety recordsView source coverage → |
| CrusherSanders, MTNear Thompson FallsMSHA 2402486 | Construction Sand and GravelSurface | AbandonedStatus date: 05/01/2020 | Thompson Falls Sand and GravelReported operatorArchie J KnerrReported controller | Production / employmentSafety recordsView source coverage → |
| Crusher #1Carbon, MTMSHA 2401864 | Construction Sand and GravelSurface | AbandonedStatus date: 08/19/1991 | Sticka Sand & GravelReported operatorSticka Jerry PReported controller | Neither history importedView source coverage → |