| Name | Address | City | ST | Postal | Phone | FAX | Email |
| JTL GROUP, INC. DBA KNIFE RIVER | PO BOX 20150 | CHEYENNE | WY | 82007 | (307)634-5455 | | kelly.churchill@kniferiver.com;ryan.drake@kniferiver.com;phillip.ostrander@kniferiver.com;carolyn.vasquez@kniferiver.com;samuel.colley@kniferiver.com;kevin.hoff@kniferiver.com |
| OFTEDAL CONSTRUCTION, INC. | 2376 SEVEN MILE RD. | CASPER | WY | 82604 | (307)237-4499 | | estimating@oftedalconstruction.com;kbacklund@oftedalconstruction.com |
| SIMON CONTRACTORS | 6215 CLEAR CREEK PKWY | CHEYENNE | WY | 82007 | (307)632-7900 | | larno@simonteam.com;zahlstrom1@simonteam.com;estimating@simonteam.com;jzimmerman@simonteam.com;kwoodhouse@simonteam.com |