National Museum of Nuclear Science & History
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.
Stanley Liebert was a machinist in the SAM Laboratory at Columbia University between 1944 and 1945.
Frank Smith worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
B. O. Yeldell worked for the Edenfield Electric Company.
