| Business | Phone |
| American Research Corp Of Va 1509 4th St, Radford 24141 | (540) 731-0655 |
| Cti Consultants 1301 W Main St, Radford 24141 | (540) 633-1500 |
| Ground Vibration Consultants 6580 Valley Center Dr 331, Radford 24141 | (540) 731-8360 |
| Hy-Tech Research Corp 104 Centre Ct, Radford 24141 | (540) 639-4019 |
| M S Consultants Inc Radford 24141 | (540) 639-6001 |
| Rainey Engineering 7252 Timberlane Dr, Radford 24141 | (540) 731-0622 |