| Business | Phone |
| Arcadis Geraghty & Miller Inc 4915 Prospectus Dr # F, Durham 27713 | (919) 544-4535 |
| Bree & Assoc Po Box 675, Durham 27702 | (919) 806-2255 |
| Spring Stoops Mc Cullen 3624 Shannon Rd, Durham 27707 | (919) 403-8000 |
| S & D Machine & Tool Inc 1404 Old Oxford Rd, Durham 27704 | (919) 479-8433 |
| A B Engineers Inc 5216 Pelham Rd, Durham 27713 | (919) 484-2111 |