| Owner: | Union Pacific Railroad Company |
| Type: | Gondola |
| AAR Class: | GT: Open top car, having high fixed sides and fixed or hinged ends and solid bottom, suitable for unloading on dumping machines only. |
| AAR Type: | J401 |
| Detail Info: | Gondola, Flat Bottom, Inside Length: 36-48ft |
| Plate: | B |
| UP Class: | G 125-2 |
| User Notes: | blt Thrall |