| Business | Phone |
| Ctl Aerospace Inc 5616 Spellmire Dr, Cincinnati 45246 | (513) 874-7900 |
| Fame Tool & Manufacturer Co 5340 Hetzell St, Cincinnati 45227 | (513) 271-6387 |
| Ge Aircraft Engines 201 W Crescentville Rd, Cincinnati 45246 | (513) 679-5000 |
| M T Braze 710 Burns St, Cincinnati 45204 | (513) 921-8590 |