AM
| Arkansas & Missouri | 1 |
AOK
| Arkansas-Oklahoma Railroad | 8 |
ATW
| Atlantic and Western | 3 |
BCOL
| Canadian National Railways | 1 |
BNSF
| BNSF Railway | 1 |
CBRY
| Copper Basin Railway | 1 |
CN
| Canadian National Railways | 2 |
COER
| Crab Orchard & Egyptian | 1 |
DWC
| Canadian National Railways | 4 |
FDDM
| Fort Dodge Des Moines & Southern | 2 |
FURX
| First Union Rail | 1 |
GNRR
| Georgia Northeastern | 1 |
HE
| Hollis and Eastern Railroad Company | 2 |
IANR
| Iowa Northern Ry | 1 |
IC
| Illinois Central | 2 |
NOKL
| Northwestern Oklahoma | 8 |
NS
| Norfolk Southern | 1 |
ONT
| Ontario Northland Railway | 1 |
RVPR
| Riverport R.R., L.L.C. | 1 |
SMW
| St Marys Railway West LLC | 2 |
SOO
| Soo Line | 5 |
TR
| Tomahawk Railway L.P. | 2 |
TTZX
| TTX Company-Centerbeam Flats | 28 |
UP
| Union Pacific Railroad Company | 5 |
WC
| Wisconsin Central | 1 |
WRWK
| Providence & Worchester Railroad | 3 |