127331 ⎘
Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers; Packing sleepers, with or without concurrent work on the track; Compacting track-carrying ballast; Packing sleepers, with or without concurrent work on the track; Sleeper-tamping machines by introducing additional fresh material under the sleepers, e.g. by the measured-shovel method, by the blowing method