| Business | Phone |
| Calvary Industries Inc 9233 Seward Rd, Fairfield 45014 | (513) 874-1113 |
| Johnson Matthey Ceramics 4820 Industry Dr, Fairfield 45014 | (513) 858-6670 |
| Orchem Corp 4293 Mulhauser Rd, Fairfield 45014 | (513) 874-9700 |
| United States Aluminate Co 3700 Dixie Hwy, Fairfield 45014 | (513) 737-7100 |