National Museum of Nuclear Science & History
John was a scientist at Los Alamos during the Manhattan Project. In 1949, John married Jean L. Balagna, who worked in the Los Alamos Lab.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.
John Fancher worked for the Kellex Corporation at the K-25 Plant.
