ATSF
| Atchison Topeka & Santa Fe | 4 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 1 |
CR
| Conrail | 2 |
CSX
| CSX Railroad | 10 |
CYDX
| Conrad Yelvington Distributors | 10 |
DRGW
| Denver & Rio Grande Western | 1 |
MP
| Missouri Pacific | 5 |
MQRX
| MACQUARIE RAIL, INC. | 1 |
NS
| Norfolk Southern | 3 |
NW
| Norfolk & Western | 1 |
PMRX
| Progress Metal Reclamation Company | 2 |
UP
| Union Pacific Railroad Company | 5 |
WAMX
| Webb Asset Management | 1 |