On the other hand, the plasma spark generated at the surface of the material generates an atmospherically tamped plasma which enhances momentum coupling to the target.
Without getting too technical, the ballast underneath the track has to be tamped to ensure that it is stable, and when it has not been tamped properly the rails flex.
They are also used for transporting diesel powered equipment such as track tamping machines through tunnel sections.
She will recover the nest and tamp the soil down.
Between each layer, a new lattice of thread is created with a wooden disk used to tamp down the layer.
Attention focused on the costs and benefits of tamping the ballast over the sleeper ends.
This is, in the mechanized age, usually done by a ballast tamping machine.
This has the advantage of not disturbing the well-compacted ballast on the trackbed, as tamping is likely to do.
