ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 2 |
CN
| Canadian National Railways | 4 |
CNW
| Chicago & Northwestern | 1 |
GREX
| Georgetown Rail Equipment Company | 5 |
HLMX
| Helm Financial Corporation | 1 |
HZGX
| Herzog Contracting Corporation | 60 |
UP
| Union Pacific Railroad Company | 6 |