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Washington University in St. Louis recognized distinguished faculty, alumni and friends at the annual Founders Day celebration Nov. 5 at St. Louis Union Station Hotel.
Dirty bomb, also called radiological dispersion device (RDD), explosive device designed to scatter radioactive material, hence the adjective dirty. Unlike an atomic bomb’s explosive power, which comes from a nuclear chain reaction, the explosive energy of the dirty bomb comes from ordinary conventional explosives such as dynamite or TNT. When the dirty bomb detonates, it scatters radioactive material that has been placed in close proximity to the explosives. The dirty bomb is easier and cheaper to build than a nuclear weapon. The radioactive material does not have to be the extremely pure uranium or plutonium found in atomic bombs but