2600 E 2nd Street
Gillette, WY 82718
From I-90, take exit 129, turn South onto Garner Lake Road, turn West onto 2nd St. Cummins Rocky Mountain is at the end of the street.
Toll Free: (800) 773-9611
Monday - Friday: 7:30 am - 5:30 pm
24 hours a day, 7 days a week