AC
| Algoma Central | 3 |
AECX
| Associated Electric Cooperative Incorporated (Mo.) | 5 |
AEPX
| American Electric Power | 5 |
AM
| Arkansas & Missouri | 1 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 1 |
BNSF
| BNSF Railway | 2 |
CEFX
| CIT Group/Capital Finance, Inc | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CITX
| CIT Group/Capital Finance, Inc | 1 |
CN
| Canadian National Railways | 4 |
COEH
| Conecuh Valley Railroad | 2 |
DJJX
| Joseph Transportation Incorporated | 1 |
EJE
| Elgin Joliet and Eastern | 2 |
ENVX
| EnergySolutions LLC | 1 |
ETRX
| Arkansas Power and Light Company | 1 |
GBW
| Green Bay & Western | 1 |
GPSX
| Georgia-Pacific Corporation Eastern Wood Products Mfg.Divisi | 1 |
ICG
| Illinois Central Gulf | 1 |
KCLX
| Kansas City Power and Light Company | 1 |
KEYX
| Keywell Corporation | 2 |
LT
| Lake Terminal Railroad Company | 1 |
MLMX
| Metal Management Inc. | 1 |
MP
| Missouri Pacific | 13 |
MVRY
| Mahoning Valley Ry | 1 |
MWCX
| Midwest Railcar Corporation | 1 |
NDYX
| First Union Rail | 1 |
NS
| Norfolk Southern | 1 |
OPSX
| Public Service Company of Oklahoma | 2 |
OVEX
| Ohio Valley Electric Company | 3 |
SATX
| City Public Service Board of San Antonio Texas | 1 |
SBTX
| FIRST UNION RAIL | 3 |
SMIX
| Structural Metals Incorporated | 3 |
SMW
| St Marys Railway West LLC | 1 |
SPSX
| Progress Rail Services Corp | 1 |
TILX
| Trinity Industries Leasing Company | 1 |
TR
| Tomahawk Railway L.P. | 3 |
UP
| Union Pacific Railroad Company | 3 |
WC
| Wisconsin Central | 2 |
WP
| Western Pacific | 1 |