AIMX
| AMERICAN IRON & METAL LP | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
BNSF
| BNSF Railway | 1 |
CNW
| Chicago & Northwestern | 1 |
CSX
| CSX Railroad | 1 |
CTRN
| Union Pacific Railroad Company | 1 |
DRGW
| Denver & Rio Grande Western | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
FSRR
| FerroSur | 3 |
FXE
| Ferromex | 14 |
GRW
| Gary Railway | 1 |
MP
| Missouri Pacific | 2 |
NW
| Norfolk & Western | 1 |
UP
| Union Pacific Railroad Company | 1 |