| Primary standard cesium clocks, such as NIST-F1 in Boulder, Colo., are about as large as a railroad flatcar. |
| It was a huge railway mortar, a flatcar with a giant gun on it. |
| In Europe, few railroads had clearances ample enough to accept a highway box trailer piggybacked on a flatcar of normal frame height. |
| This force would be particularly strong on a bulkhead flatcar loaded with lumber as the centre of gravity would be quite high. |
| The donkey would reel the logs into place and special tongs were used to place the logs on a flatcar. |
| Two locomotives, a slug unit and a loaded centre beam flatcar in the yard consist, derailed. |
