AERC
| Albany and Eastern Railroad Company | 1 |
ATW
| Atlantic and Western | 1 |
BNSF
| BNSF Railway | 3 |
CN
| Canadian National Railways | 1 |
COER
| Crab Orchard & Egyptian | 1 |
IC
| Illinois Central | 1 |
LW
| Louisville and Wadley Railway Company | 2 |
NOKL
| Northwestern Oklahoma | 2 |
SERA
| Sierra Northern Railway | 1 |
TTZX
| TTX Company-Centerbeam Flats | 4 |