SUPER-ANTHRAX IN RUSSIAN LEAK. “The strain of anthrax produced in Military Compound 19 near Sverdlovsk was the most powerful in the Soviet arsenal (“Anthrax 836″). It had been isolated as a result of another anthrax leak accident that happened in 1953 in the city of Kirov. A leak from a bacteriological facility contaminated the city sewer system … This strain was planned to be used to arm warheads for the SS-18 ICBM, which would target American cities, among other targets.”
http://en.wikipedia.org/wiki/Sverdlovsk_Anthrax_leak