Photograph Notes: Tamping machines > //.uk/photo/1604048 are used by engineers on the railway to pack (or tamp) the stone ballast which supports the track. The ballast needs to be firmly packed to avoid unwanted track movements; however, even tightly-packed ballast allows some flexibility. Before the introduction of mechanical tamping machines, the job had to be done by manual labour. This only partly consolidated the ballast so speed had to be restricted over renewed track until the passage of trains had bedded-in the ballast: track which has been mechanically tamped can be operated at full line speed much sooner. The machine was built in 2004/05 by Plasser & Theurer who are based in Linz, Austria, where most of the parts used in the work units, hydraulic elements or bogies are being manufactured.

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Size: 6" x 4" - 150mm x 100mm

Copyright (Photograph and text in Photograph Notes): � Copyright Evelyn Simak and licensed for reuse under creativecommons.org/licenses/by-sa/2.0 details available here: https://creativecommons.org/licenses/by-sa/2.0/

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