| Owner: | Union Pacific Railroad Company |
| Type: | Gondola |
| AAR Class: | MWB: Ballast Cars. All descriptions of cars used for the purpose of carrying ballast for the laying of new right of way and repairs. The car used generally for this work is of the gondola type, with side or center dump. |
| AAR Type: | M110 |
| Detail Info: | Misc Cars |
| User Notes: | Originally for Ore, now used to haul crossties |
