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 Aldershot, which was designed equally for the anticipated increase in military traffic in the area as well as commuters. Waterloo was bombed several times during World War II. On 7 September 1940, the John Street viaduct immediately outside the station was destroyed by a bomb, which prevented any services running for 12 days. Full services did not resume until 1 October, which particularly affected mail traffic with over 5,000 unsorted bags piling up on the station platform. Waterloo was closed again after bombing on 29 December 1940. It re-opened on 5 January 1941, on the same day that station offices