The fellow holding the plutonium hemispheres apart with the tip of a screwdriver http://en.wikipedia.org/wiki/Louis_Slotin http://en.wikipedia.org/wiki/Louis_Sl

The fellow holding the plutonium hemispheres apart with the tip of a screwdriver http://en.wikipedia.org/wiki/Louis_Slotin http://en.wikipedia.org/wiki/Louis_Slotin had previously distinguished himself by going swimming in an active nuclear reactor. Possibly no-one will ever surpass his achievements as likely the greatest eejit in the history of nuclear engineering.