During the celebration of 125 years Kölner Verkehrsbetriebe (KVB) at
Neumarkt on 25 May 2002, thermite welding of rails was demonstrated. The
reaction is more or less finished, now the melted steel runs into the form.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>