ATSF
| Atchison Topeka & Santa Fe | 2 |
CBQ
| Chicago Burlington & Quincy | 2 |
CNW
| Chicago & Northwestern | 4 |
DRGW
| Denver & Rio Grande Western | 1 |
EAMX
| Everest Railcar Services, Inc | 1 |
HLMX
| Helm Financial Corporation | 1 |
MP
| Missouri Pacific | 3 |
MWAX
| Martin Marietta Materials Incorporated | 1 |
UP
| Union Pacific Railroad Company | 3 |