BKTY
| Union Pacific Railroad Company | 1 |
BN
| Burlington Northern | 1 |
FXE
| Ferromex | 1 |
HZGX
| Herzog Contracting Corporation | 5 |
LW
| Louisville and Wadley Railway Company | 1 |
MKC
| McKeesport Connecting Railroad Company | 3 |
MP
| Missouri Pacific | 2 |
SMIX
| Structural Metals Incorporated | 1 |
SP
| Southern Pacific | 1 |
TILX
| Trinity Industries Leasing Company | 1 |
UP
| Union Pacific Railroad Company | 1 |