National Museum of Nuclear Science & History
Helen Mannon worked for the Roane-Anderson Company.
Ira C. Weatherly served as a 2nd lieutenant in the 393rd Bombardment Squadron. He was the pilot on the Straight Flush during the Hiroshima mission.
Halbrook worked in the United States Engineer District Office.
Everett Ellis worked for the H. K. Ferguson Company.
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.