| Business | Phone |
| Ch2m Hill 3451 Fraser St, Aurora 80011 | (303) 371-7641 |
| Conveyor Technologies 2200 Chambers Rd # J, Aurora 80011 | (303) 344-9024 |
| From A Site To Sales 8011 S Ireland Way, Aurora 80016 | (303) 646-3898 |
| Goss Engineers Inc 12333 E Cornell Ave, Aurora 80014 | (303) 337-4510 |
| Madsen Kneppers & Assoc Inc 2851 S Parker Rd # 450, Aurora 80014 | (303) 745-6813 |
| Malcolm Pirnie Inc 3300 S Parker Rd # 305, Aurora 80014 | (303) 369-3535 |
| Mea Consulting Engineers 13771 E Rice Pl, Aurora 80015 | (720) 870-5630 |
| Mmc Engineering 2260 S Xanadu Way # 240, Aurora 80014 | (303) 671-4403 |
| P J Kelley Consulting Inc 17964 E Bates Ave, Aurora 80013 | (303) 693-3583 |
| World Consulting Engrg Co 2600 S Parker Rd, Aurora 80014 | (303) 306-9095 |
| Titan Corp 3033 S Parker Rd # 1200, Aurora 80014 | (303) 369-4410 |