AA
| Ann Arbor | 2 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 1 |
CWRX
| CWR TRANSPORTATION CO. | 21 |
FTSX
| Fairmont Tamper | 3 |
MPCX
| Michels Corporation | 1 |
RCPE
| Rapid City Pierre & Eastern Railroad | 1 |
RMSX
| Pandrol Jackson Incorporated | 18 |
SDIX
| Steel Dynamics, Inc | 4 |
VSR
| Valley & Siletz RR | 2 |