| Business | Phone |
| A D Engineering Svc 651 E 4th St, Chattanooga 37403 | (423) 266-3501 |
| Atlantic Engineering Group 4015 Divine Ave, Chattanooga 37407 | (423) 648-2345 |
| Burns & Mc Donnell 801 Broad St # 540, Chattanooga 37402 | (423) 265-2996 |
| Campbell & Assoc Inc 615 E 4th St, Chattanooga 37403 | (423) 265-7879 |
| Jei Engineering 5751 Uptain Rd, Chattanooga 37411 | (423) 553-1150 |