ATSF
| Atchison Topeka & Santa Fe | 3 |
BCMX
| Bullet Concrete Materials Company | 1 |
BN
| Burlington Northern | 12 |
BNSF
| BNSF Railway | 4 |
CNW
| Chicago & Northwestern | 3 |
CTRN
| Union Pacific Railroad Company | 1 |
FWWR
| Fort Worth and Western | 3 |
GABX
| General American Marks Company | 2 |
GNAX
| Holcim (US) Inc | 3 |
HEQX
| Helm Financial Corporation | 2 |
IFRX
| Infinity Rail LLC | 1 |
MP
| Missouri Pacific | 2 |
MWAX
| Martin Marietta Materials Incorporated | 65 |
NDYX
| First Union Rail | 1 |
PMRX
| Progress Metal Reclamation Company | 9 |
SKOL
| South Kansas and Oklahoma | 1 |
TCMX
| CIT Group/Capital Finance, Inc | 1 |
TILX
| Trinity Industries Leasing Company | 4 |
TXIX
| Texas Industries Incorporated | 47 |
TXUX
| TXU Electric | 4 |
VULX
| Vulcan Materials | 2 |
WMAX
| WMAX | 1 |