| Business | Phone |
| Ghosh Engineers Inc 723 Kanawha Blvd E 12, Charleston 25301 | (304) 343-5300 |
| H C Nutting Co 912 Morris St, Charleston 25301 | (304) 344-0821 |
| S & S Engineers Inc 501 Eagle Mountain Rd, Charleston 25311 | (304) 342-7168 |
| Shaw E & I 6 Craddock Ln, Charleston 25309 | (304) 768-2600 |