During the celebration of 125 years Kölner Verkehrsbetriebe (KVB) at
Neumarkt on 25 May 2002, thermite welding of rails was demonstrated. The form
is attached to the rail ends, the space between it and the rails is filled with
sand.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>