DRGW
| Denver & Rio Grande Western | 2 |
HATX
| Helm Financial Corporation | 1 |
HLMX
| Helm Financial Corporation | 5 |
HZGX
| Herzog Contracting Corporation | 5 |
SI
| Union Pacific Railroad Company (Spokane International) | 34 |
SP
| Southern Pacific | 11 |
SPMW
| Southern Pacific Maintenance of Way | 3 |
SPTX
| Trinity Rail Management Incorporated | 1 |
UP
| Union Pacific Railroad Company | 8 |