Ricin the attack on Georgi Markov another Bulgarian defector, Vladimir Kostov, survived a similar attack. Kostov was standing on an escalator of the Paris metro when he felt a sting in his lower back above the belt of his trousers. He developed a fever, but recovered. After Markov's death the wound on Kostov's back was examined and a ricin-laced pellet identical to the one used against Markov was removed. Several terrorists and terrorist groups have experimented with ricin and caused several incidents of the poisons being mailed to U.S. politicians. For example, on May 29, 2013 two anonymous letters sent to
London Waterloo station was demolished and replaced with a dedicated building in 1902, as part of the reconstruction of Waterloo in the early 20th century. Traffic and passengers to Waterloo increased throughout the century, and Waterloo was extended in an ad-hoc manner to accommodate this. In 1860, new platforms were added on the northwest side of the station; these were known as the Windsor Station after its intended destination. An additional dock siding of the main station opened on 17 March 1869. A link to the South Eastern Railway (SER) line from to opened in July 1865. It was diverted from London Bridge