CSX
| CSX Railroad | 8 |
GREX
| Georgetown Rail Equipment Company | 3 |
HLMX
| Helm Financial Corporation | 2 |
HZGX
| Herzog Contracting Corporation | 64 |
NCRC
| Nebraska Central | 1 |
SI
| Union Pacific Railroad Company (Spokane International) | 5 |
UP
| Union Pacific Railroad Company | 1 |