| Tri County Limestone CompanyMarion, OHNear MARSEILLESMSHA 3300167 | Crushed, Broken Limestone NECSurface | AbandonedStatus date: 07/23/2005 | Tri County Limestone CompanyReported operatorCRH PLCReported controller | Production / employmentSafety recordsView source coverage → |
| Triple A StripCarroll, OHNear PerrysvilleMSHA 3304367 | Coal (Bituminous)Surface | AbandonedStatus date: 09/22/1999 | Triple A ConstructionReported operatorAllar Bradley AReported controller | Neither history importedView source coverage → |
| Triple S StripMuskingum, OHMSHA 3303584 | Coal (Bituminous)Surface | AbandonedStatus date: 06/21/1977 | Triple S Mining CorpReported operatorStiles Dolores EReported controller | Neither history importedView source coverage → |
| Tri StatePerry, OHNear New Lexington,MSHA 3304008 | Coal (Bituminous)Surface | AbandonedStatus date: 07/30/1988 | Tri State Coal Sales IncReported operatorAllen Steven LReported controller | Neither history importedView source coverage → |
| Tri State No 2Hocking, OHNear Murray CityMSHA 3304069 | Coal (Bituminous)Surface | AbandonedStatus date: 10/16/1992 | Tri State Coal Sales IncReported operatorAllen Steven LReported controller | Neither history importedView source coverage → |
| Tri Valley StripCoshocton, OHNear CoshoctonMSHA 3303490 | Coal (Bituminous)Surface | AbandonedStatus date: 06/30/1983 | Tri Valley Energy IncReported operatorDobson PaulReported controller | Neither history importedView source coverage → |
| Troyer PitHolmes, OHMSHA 3300474 | Common Clays NECSurface | AbandonedStatus date: 03/16/1994 | General Clay Products CorpReported operatorHarold B Epler JrReported controller | Neither history importedView source coverage → |
| T & T #23 (Tipple Only)Jefferson, OHNear SteubenvilleMSHA 3300984 | Coal (Bituminous)Facility | AbandonedStatus date: 12/11/1998 | T & T Coal CompanyReported operatorTeramana Anthony JReported controller | Neither history importedView source coverage → |
| Tunnel Coal Co Inc MineJackson, OHMSHA 3303629 | Coal (Bituminous)Underground | AbandonedStatus date: 10/01/1979 | Tunnel Coal Company IncReported operatorArgabright Martin LReported controller | Neither history importedView source coverage → |
| Tunnell HillCarroll, OHNear Mineral CityMSHA 3304309 | Coal (Bituminous)Surface | AbandonedStatus date: 09/22/1999 | Toronto A & L Coal IncReported operatorAmos RawsonReported controller | Neither history importedView source coverage → |
| Tusco Strip MineTuscarawas, OHMSHA 3302052 | Coal (Bituminous)Surface | AbandonedStatus date: 02/09/1973 | Tusco Coal CompanyReported operatorMoreland GeorgeReported controller | Neither history importedView source coverage → |
| TuskyTuscarawas, OHNear UhrichsvilleMSHA 3304509 | Coal (Bituminous)Underground | Abandoned and SealedStatus date: 12/29/2020 | Rosebud Mining CompanyReported operatorJ Clifford Forrest IIIReported controller | Production / employmentSafety recordsView source coverage → |
| Twin Lakes Sand IncorporatedSummit, OHMSHA 3303031 | Construction Sand and GravelSurface | AbandonedStatus date: 05/07/1985 | Twin Lakes Sand IncReported operatorH J StagerReported controller | Neither history importedView source coverage → |
| Twinsburg Development Corp.Portage, OHNear Aurora MSHA 3304204 | Construction Sand and GravelSurface | AbandonedStatus date: 12/28/2011 | Twinsburg Development CorpReported operatorJerome OsborneReported controller | Production / employmentSafety recordsView source coverage → |
| TWINSBURG SAND & GRAVEL CO.Summit, OHMSHA 3304412 | Crushed, Broken SandstoneSurface | AbandonedStatus date: 11/23/1998 | Ohio Bulk Transfer CompanyReported operatorJames PalladinoReported controller | Neither history importedView source coverage → |
| Twinsburg Silica Sand & Gravel CompanySummit, OHMSHA 3301945 | Construction Sand and GravelSurface | AbandonedStatus date: 08/18/1983 | Twinsburg Silica Sand & Gravel CompanyReported operatorTwinsburg Silica Sand & Gravel CompanyReported controller | Neither history importedView source coverage → |
| U363 CRUSHERLogan, OHMSHA 3304459 | Construction Sand and GravelSurface | AbandonedStatus date: 09/11/2002 | Valley Mining IncReported operatorMary J BrownReported controller | Production / employmentSafety recordsView source coverage → |
| Ug LattanzioColumbiana, OHMSHA 3300714 | Coal (Bituminous)Underground | AbandonedStatus date: 09/26/1980 | Standard Coal CompanyReported operatorStandard Coal CompanyReported controller | Neither history importedView source coverage → |
| Uhrichsville PlantTuscarawas, OHMSHA 3302871 | Fire ClayFacility | AbandonedStatus date: 05/21/1982 | Belden Brick CompanyReported operatorRobert BeldenReported controller | Neither history importedView source coverage → |
| UllomColumbiana, OHNear LisbonMSHA 3303948 | Coal (Bituminous)Surface | AbandonedStatus date: 02/09/1995 | Center Mining CompanyReported operatorUllom RobertReported controller | Neither history importedView source coverage → |
| UNI-BILTMontgomery, OHNear VandaliaMSHA 3304465 | Construction Sand and GravelSurface | AbandonedStatus date: 07/29/2002 | Nelson Stark CompanyReported operatorMark B StarkReported controller | Production / employmentSafety recordsView source coverage → |
| Union Slag #3Washington, OHMSHA 3302611 | Construction Sand and GravelSurface | AbandonedStatus date: 09/18/1991 | Union Slag CorpReported operatorHune JosephineReported controller | Neither history importedView source coverage → |
| Uniontown CoalBelmont, OHNear UniontownMSHA 3304380 | Coal (Bituminous)Surface | AbandonedStatus date: 02/25/1997 | Northshore Coal IncReported operatorCharles DawsonReported controller | Neither history importedView source coverage → |
| Unit 1 Portable CrusherLucas, OHNear ToledoMSHA 3304752 | Construction Sand and GravelSurface | AbandonedStatus date: 07/14/2026 | Cornerstone CrushingReported operatorBenjamin Geddis; Steve R OliverReported controller | Production / employmentView source coverage → |
| Unit 2 Portable CrusherWayne, OHNear MaumeeMSHA 3304756 | Sand, CommonSurface | AbandonedStatus date: 09/14/2026 | Cornerstone Crushing, LLCReported operatorBenjamin Geddis; Steve R OliverReported controller | Production / employmentView source coverage → |
| Unit 3 Portable CrusherOttawa, OHNear ClaycenterMSHA 3304811 | Construction Sand and GravelSurface | AbandonedStatus date: 07/29/2026 | Cornerstone Crushing LLCReported operatorBenjamin Geddis; Steve R OliverReported controller | Safety recordsView source coverage → |
| Unit 4 Portable ScreenerLucas, OHNear ToledoMSHA 3304812 | Construction Sand and GravelSurface | AbandonedStatus date: 09/03/2025 | Cornerstone Crushing LLCReported operatorBenjamin Geddis; Steve R OliverReported controller | Safety recordsView source coverage → |
| United Aggregates Inc.Richland, OHNear BellvilleMSHA 3301440 | Construction Sand and GravelSurface | AbandonedStatus date: 08/28/2017 | United Aggregates IncReported operatorJohn D EllisReported controller | Production / employmentSafety recordsView source coverage → |
| Universal StripGallia, OHNear GallipolisMSHA 3303413 | Coal (Bituminous)Surface | AbandonedStatus date: 08/09/1984 | Universal Coal & Energy DivisionReported operatorAmerican Industries & Resources CorpReported controller | Neither history importedView source coverage → |
| Upper SanduskyWyandot, OHNear Upper SanduskyMSHA 3304552 | Construction Sand and GravelSurface | AbandonedStatus date: 12/10/2024 | The National Lime & Stone CompanyReported operatorNational Lime & Stone Co.Reported controller | Production / employmentSafety recordsView source coverage → |