During the celebration of 125 years Kölner Verkehrsbetriebe (KVB) at Neumarkt on 25 May 2002, thermite welding of rails was demonstrated. Most of the steel outside the rail profile was removed. Some grinding would be needed to remove the rest, but this was not done during the demonstration as some sparks might have done harm to the spectators.
Digital photo by Christoph Schmitz