National Museum of Nuclear Science & History
Grover Thompson worked for the United States Engineer District Office.
K. A. O'Connor worked for the Roane-Anderson Company.
William Stewart was an engineer in the Special Engineering Detachment at Los Alamos, New Mexico. Specifically, Stewart worked in “Project Trinity” under the leadership of George Kistiakowsky and Kenneth Bainbridge.
Stanley Krzyck was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
