National Museum of Nuclear Science & History
Leonard Blankenship worked for the Roane-Anderson Company.
Harrah worked at the 300 Area at Hanford during the Manhattan Project.
James Downey was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Mench was assigned to the Special Engineer Detachment at Los Alamos where he worked as a pattern maker, creating wooden casts for metal work at the site’s foundry.
