Science: Blue Flash at DP Site

In the closely guarded technical area of Los Alamos Scientific Laboratory is a building on the mysteriously named DP Site. In one of its rooms Technician Cecil W. Kelley, 38, was working alone last week, adding a solvent to a 225-gal. tank. It was a routine part of a process to recover plutonium from waste materials. During his ten years at Los Alamos he had done the same chore about 75 times. This time was different. When he turned on the stirring apparatus, a bright blue flash bloomed out of the tank.

Roderick Day, a technician working in the next room, saw...

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