| Owner: | Union Pacific Railroad Company |
| Type: | Gondola |
| AAR Class: | GB: Open top car, having fixed sides, fixed or drop ends and solid bottom. |
| AAR Type: | G512 |
| Detail Info: | Unequipped Gondola, Inside length 52-61ft, greater than 9ft inside width, Steel Floor, solid ends, Inside height: 47-167 inches, Load Limit: 155,000-184,999 |
| Plate: | B |
| UP Class: | G-70-4 |
