A Plasser & Theurer 08-475 Unimat 4 S ballast tamper of Kölngleis is
shunting in Aachen West on 12 July 2001. This machine is rather big, consisting
of a four-axled and a two-axled section.
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Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph Schmitz</a>