| IAIntegrated Automation Systems | Bedford Heights | — | ◇ UNVERIFIED |
| ILItalgranite LLC | North Royalton | — | ◇ UNVERIFIED |
| JSJesri Stone Ltd. | North Ridgeville | — | ◇ UNVERIFIED |
| JEJgk Enterprises INC. Dba American Granite & Marble | Solon | — | ◇ UNVERIFIED |
| JGJlm Glass Studio LLC | Dayton | — | ◇ UNVERIFIED |
| JRJosiah Realty Group LLC | Cincinnati | — | ◇ UNVERIFIED |
| JSJ & S Glass, INC. | Clarksville | — | ◇ UNVERIFIED |
| KRKelley Ready Mix LLC | Batavia | — | ◇ UNVERIFIED |
| KRKelley Ready Mix LLC | Batavia | — | ◇ UNVERIFIED |
| KCKephaco Corporation | Canton | — | ◇ UNVERIFIED |
| KIKnight Industries CORP. | Toledo | — | ◇ UNVERIFIED |
| LGLakeland Glass Company, INC. | Oberlin | — | ◇ UNVERIFIED |
| LPLapmaster Precision Finishing Services, LLC | Dayton | — | ◇ UNVERIFIED |
| LELevy Environmental Services Company | Delta | — | ◇ UNVERIFIED |
| LRLight Reign Artisan Co. LLC | Cleveland | — | ◇ UNVERIFIED |
| LSLind Stone Works | Gahanna | — | ◇ UNVERIFIED |
| LALockbourne Aggregates LLC | Lockbourne | — | ◇ UNVERIFIED |
| LTLondon Tile Company | New London | — | ◇ UNVERIFIED |
| LLLuxur Liv | Lewis Center | — | ◇ UNVERIFIED |
| MGMachined Glass Specialists, INC. | Springboro | — | ◇ UNVERIFIED |
| MAMazzolini Artcraft Company Incorporated | Cleveland | — | ◇ UNVERIFIED |
| MSMcgill Septic Tank | Kinsman | — | ◇ UNVERIFIED |
| MSMelvin Stone - Unit # 2202307 - Portable | Cincinnati | — | ◇ UNVERIFIED |
| MPMichael Precast Concrete, INC. | Loveland | — | ◇ UNVERIFIED |
| MMMidwest Manufacturing | Pioneer | — | ◇ UNVERIFIED |
 Mississippi Lime Company | Huron | — | ◇ UNVERIFIED |
| MSModlich Stoneworks, INC. | Columbus | — | ◇ UNVERIFIED |
| MGMosser Glass | Cambridge | — | ◇ UNVERIFIED |
| MTMurton Trucking, LLC | Twinsburg | — | ◇ UNVERIFIED |
| NQNagy Quality Stone INC | Cleveland | — | ◇ UNVERIFIED |
| NGNational Granite Luxuries | Medina | — | ◇ UNVERIFIED |
| NLNational Lime & Stone CO - Carey Oh Lime Plant (0388000043) | Carey | — | ◇ UNVERIFIED |
| NGNavcour Glassware Llc | Lorain | — | ◇ UNVERIFIED |
| NNexceris | Lewis Center | — | ◇ UNVERIFIED |
| NANorth American Refractories CO | Cincinnati | — | ◇ UNVERIFIED |
| NONortheast Ohio Precast LLC | Salem | — | ◇ UNVERIFIED |
 Norwalk Concrete Industries, INC. | Norwalk | — | ◇ UNVERIFIED |
| ODOberfields - Delaware, Oh Masonry Plant | Delaware | — | ◇ UNVERIFIED |
| OLOberfield's LLC | Delaware | — | ◇ UNVERIFIED |
| OGOhio Glass and Aluminum Company | Marysville | — | ◇ UNVERIFIED |
| OMOhio Mirror Technologies, INC. | Paulding | — | ◇ UNVERIFIED |
| OO-i | Zanesville | — | ◇ UNVERIFIED |
| OCOsborne Concrete & Stone CO (0243030583) | Grand River | — | ◇ UNVERIFIED |
| OIOsborne INC | Mentor | — | ◇ UNVERIFIED |
| OCOwens Corning Oem Solutions Group | Hebron | — | ◇ UNVERIFIED |
| OIOwens Illinois INC | Perrysburg | — | ◇ UNVERIFIED |
| PTParagon Tempered Glass, LLC | Antwerp | — | ◇ UNVERIFIED |
| PCPatchwork Ceramics | Coshocton | — | ◇ UNVERIFIED |
| PSPatriot Stone LLC | Columbus | — | ◇ UNVERIFIED |
| PVPerlite Vermiculite Packaging Industries INC. | North Bloomfield | — | ◇ UNVERIFIED |
