| ClarkTuscarawas, OHNear New Philadelphia TuscarMSHA 3303964 | Coal (Bituminous)Surface | AbandonedStatus date: 07/06/1989 | Triad Mining IncReported operatorMilarcik Michael AReported controller | Neither history importedView source coverage → |
| Clark Clay CompanyHolmes, OHMSHA 3300456 | Fire ClaySurface | AbandonedStatus date: 06/01/1994 | Clark Clay CompanyReported operatorClark Dwight SReported controller | Neither history importedView source coverage → |
| Clark Pit And MillWarren, OHMSHA 3301522 | Construction Sand and GravelSurface | AbandonedStatus date: 02/03/1986 | J L Clark ConstructionReported operatorClark J LReported controller | Neither history importedView source coverage → |
| Clay Bank StripPerry, OHMSHA 3301284 | Coal (Bituminous)Surface | AbandonedStatus date: 08/27/1973 | Ohio Amco IncReported operatorPaul E BryantReported controller | Neither history importedView source coverage → |
| Claycraft #1Wyandot, OHMSHA 3300540 | Common Clays NECSurface | AbandonedStatus date: 03/10/1986 | Claycraft CompanyReported operatorTefft P WReported controller | Neither history importedView source coverage → |
| Claycraft No 3 Pits & PlantTuscarawas, OHMSHA 3300541 | Fire ClaySurface | AbandonedStatus date: 08/22/1979 | Claycraft CompanyReported operatorTefft P WReported controller | Neither history importedView source coverage → |
| Claycraft No 4-5Franklin, OHMSHA 3300542 | Common ShaleSurface | AbandonedStatus date: 07/12/1985 | Claycraft CompanyReported operatorTefft P WReported controller | Neither history importedView source coverage → |
| Clean Coal TippleBelmont, OHMSHA 3302330 | Coal (Bituminous)Surface | AbandonedStatus date: 04/04/1974 | Cravat Coal CompanyReported operatorCravat Coal CompanyReported controller | Neither history importedView source coverage → |
| CLEMSON EXCAVATING, INC.Ashtabula, OHNear HartsgroveMSHA 3304406 | Construction Sand and GravelSurface | AbandonedStatus date: 07/06/2005 | Clemson Excavating IncReported operatorCarl (William) ClemsonReported controller | Production / employmentSafety recordsView source coverage → |
| ClevesHamilton, OHMSHA 3301591 | Construction Sand and GravelSurface | AbandonedStatus date: 12/13/1990 | Dravo Basic Materials Company IncReported operatorDravo CorpReported controller | Neither history importedView source coverage → |
| Clinton County PlantClinton, OHNear SabinaMSHA 3304546 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/16/2015 | Melvin Stone Company, LLCReported operatorJames P Jurgensen II; Jacqueline J Alf; Jason R JurgensenReported controller | Production / employmentSafety recordsView source coverage → |
| Clipper Mills DockGallia, OHNear GallipolisMSHA 3302124 | Coal (Bituminous)Facility | AbandonedStatus date: 08/11/1982 | Clipper Mills Dock CompanyReported operatorJay Hall JrReported controller | Neither history importedView source coverage → |
| Coal Grove River DockLawrence, OHMSHA 3303592 | Coal (Bituminous)Facility | AbandonedStatus date: 10/01/1979 | Addington Brothers Mining IncReported operatorAshland IncReported controller | Neither history importedView source coverage → |
| Coal Power Mine #1Meigs, OHMSHA 3303791 | Coal (Bituminous)Underground | AbandonedStatus date: 08/21/1981 | Coal Power IncReported operatorMitchell Claire E-Thomas A Crisp & James H LargeReported controller | Neither history importedView source coverage → |
| Coal ResourcesCarroll, OHMSHA 3003666 | Coal (Bituminous)Surface | AbandonedStatus date: 08/01/1979 | Coal ResourcesReported operatorBirchfield RobertReported controller | Neither history importedView source coverage → |
| Coal Resources StripCarroll, OHMSHA 3303666 | Coal (Bituminous)Surface | AbandonedStatus date: 10/01/1979 | Coal ResourcesReported operatorBirchfield RobertReported controller | Neither history importedView source coverage → |
| Coal SamplerHarrison, OHNear CadizMSHA 3303940 | Coal (Bituminous)Facility | AbandonedStatus date: 01/16/1986 | Consolidation Coal CompanyReported operatorRobert E MurrayReported controller | Neither history importedView source coverage → |
| Coal ValleyGallia, OHNear VintonMSHA 3304344 | Coal (Bituminous)Surface | AbandonedStatus date: 01/06/2005 | Sands Hill Coal Company Inc.Reported operatorAlan ArthurReported controller | Production / employmentSafety recordsView source coverage → |
| Coal Valley Strip MineGallia, OHMSHA 3303352 | Coal (Bituminous)Surface | AbandonedStatus date: 01/10/1977 | Cavalier Coal CorpReported operatorFriend EdwinReported controller | Neither history importedView source coverage → |
| Coates Gravel PitGreene, OHNear SpringvalleyMSHA 3303863 | Construction Sand and GravelSurface | AbandonedStatus date: 10/24/2025 | M J Coates Construction CompanyReported operatorMarty D CoatesReported controller | Production / employmentSafety recordsView source coverage → |
| Cochran MineHarrison, OHNear CadizMSHA 3303971 | Coal (Bituminous)Surface | AbandonedStatus date: 09/18/1986 | A B & L Transfer IncReported operatorFleagane NickReported controller | Neither history importedView source coverage → |
| Cochran Transportation Services, Inc.Athens, OHNear AthensMSHA 3304269 | Construction Sand and GravelSurface | AbandonedStatus date: 02/08/2021 | Cochran Transportation Service IncReported operatorGregory L CochranReported controller | Production / employmentSafety recordsView source coverage → |
| Coleman PitBelmont, OHNear Near BlainsvilleMSHA 3303991 | Coal (Bituminous)Surface | AbandonedStatus date: 09/22/1999 | K C C IReported operatorGeorge KrulockReported controller | Neither history importedView source coverage → |
| Coleman Preparation PlantScioto, OHMSHA 3303358 | Coal (Bituminous)Facility | AbandonedStatus date: 01/17/1977 | Coleman Coal SalesReported operatorColeman Coal SalesReported controller | Neither history importedView source coverage → |
| Coleman StripJackson, OHMSHA 3303301 | Coal (Bituminous)Surface | AbandonedStatus date: 10/01/1979 | Coleman Coal SalesReported operatorColeman Coal SalesReported controller | Neither history importedView source coverage → |
| COLIAN TRUCKINGMahoning, OHNear SalemMSHA 3304455 | Construction Sand and GravelSurface | AbandonedStatus date: 08/18/2006 | Colian Trucking CompanyReported operatorTony ColianReported controller | Production / employmentSafety recordsView source coverage → |
| Collier/SymmesGallia, OHNear PatriotMSHA 3304679 | Coal (Bituminous)Facility | AbandonedStatus date: 03/12/2024 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Collier/SymmesGallia, OHNear PatriotMSHA 3304690 | Coal (Bituminous)Facility | AbandonedStatus date: 03/12/2024 | Operator not reportedReported operatorController not reportedReported controller | Neither history importedView source coverage → |
| Collins StripLawrence, OHNear BlackforkMSHA 3300986 | Coal (Bituminous)Surface | AbandonedStatus date: 09/12/1990 | Collins Mining Company IncReported operatorCollins Oakley C & Coleman EReported controller | Neither history importedView source coverage → |
| Columbia Fire Brick Company MillTuscarawas, OHMSHA 3301958 | Fire ClayFacility | AbandonedStatus date: 05/21/1982 | Columbia Fire Brick CoReported operatorColumbia Fire Brick CoReported controller | Neither history importedView source coverage → |