BAWX
| Babcox & Wilcox | 1 |
BN
| Burlington Northern | 1 |
CCRX
| Cape Cod Railroad | 1 |
CR
| Conrail | 1 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 1 |
IHB
| Indiana Harbor Belt | 1 |
LMIX
| Loram Maintenance of Way Inc. | 1 |
NW
| Norfolk & Western | 1 |
SOO
| Soo Line | 1 |
SOU
| Southern | 1 |