AOK
| Arkansas-Oklahoma Railroad | 2 |
CIRR
| Chattahoochee Industrial Railroad | 1 |
COER
| Crab Orchard & Egyptian | 2 |
CSX
| CSX Railroad | 2 |
EEC
| East Erie Commercial Railroad | 1 |
FBOX
| TTX Company | 2 |
HS
| H and S Railroad Company | 2 |
KCS
| Kansas City Southern | 1 |
NS
| Norfolk Southern | 8 |
SOU
| Southern | 3 |
TR
| Tomahawk Railway L.P. | 1 |