| Business | Phone |
| Biedenbach Engineering Inc 3010 East Pike, Zanesville 43701 | (740) 453-4850 |
| Eicher Engineering & Cnsltng 47 N 4th St # 204, Zanesville 43701 | (740) 450-9309 |
| L C Camp & Assoc 3205 Dresden Rd, Zanesville 43701 | (740) 454-1563 |
| Linn Engineering 534 Market St # 3, Zanesville 43701 | (740) 452-7434 |