BNSF
| BNSF Railway | 2 |
BPRR
| Buffalo and Pittsburgh | 2 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CNW
| Chicago & Northwestern | 5 |
CTRN
| Union Pacific Railroad Company | 10 |
EJE
| Elgin Joliet and Eastern | 1 |
GABX
| General American Marks Company | 2 |
GACX
| General American Marks Company | 16 |
ITFX
| INFINITY TRANSPORTATION III LLC | 3 |
JEFW
| Jefferson Warrior Railroad Company | 3 |
LWAX
| Laidlaw Environmental Services | 6 |
OFOX
| RESIDCO | 1 |
PEPX
| Potomac Electric Power Company | 2 |
PMRX
| Progress Metal Reclamation Company | 1 |
PPLX
| Pennsylvania Power and Light Company | 101 |
RBMN
| Reading Blue Mountain & Northern | 29 |
SCWX
| South Carolina Public Service Authority | 1 |
UP
| Union Pacific Railroad Company | 12 |
WC
| Wisconsin Central | 1 |
WE
| Wheeling & Lake Erie | 1 |