| Business | Phone |
| Basepoint Design Corp 2280 S Xanadu Way # 350, Aurora 80014 | (303) 368-7711 |
| Engineering Service Co 1300 S Potomac St # 126, Aurora 80012 | (303) 337-1393 |
| Fluor Corp 12100 E Iliff Ave, Aurora 80014 | (303) 248-1068 |
| Futura Engineering Inc 14190 E Evans Ave, Aurora 80014 | (303) 649-9292 |
| Merrick & Co 2450 S Peoria St # 125, Aurora 80014 | (303) 751-0741 |
| Robinson-Dalton Consulting Inc 10700 E Bethany Dr # 209, Aurora 80014 | (303) 752-4823 |
| Venture Engineering Corp 2953 S Peoria St, Aurora 80014 | (303) 337-4700 |