| Business | Phone |
| Cummins Rocky Mountain Llc 1033 S 400 W, Salt Lake City 84101 | (801) 355-6500 |
| Diesel Electric Svc & Supply 652 W 1700 S, Salt Lake City 84104 | (801) 972-1836 |
| E C Power Systems 3683 W 2270 S A, Salt Lake City 84120 | (801) 886-1424 |
| Questar Energy Svc Inc 1140 W 200 S, Salt Lake City 84104 | (801) 324-2000 |
| Smith Detroit Diesel 3065 California Ave, Salt Lake City 84104 | (801) 415-5000 |
| Stewart & Stevenson Power 3530 S West Temple 1, Salt Lake City 84115 | (801) 288-8848 |