National Museum of Nuclear Science & History
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
William Spindel was a member of the Special Engineer Detachments at Oak Ridge and Los Alamos. Spindel worked in a group that helped make coatings for the implosion bomb.
W. J. Boyden worked for the Tennessee Eastman Corporation at the Y-12 Plant.
