National Museum of Nuclear Science & History
Sidney Schneider was an aerial gunner and worked in bomb disposal with the 1027th Air Material Squadron in the 509th Composite Group.
Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Bennie Tapia was a staff worker at Los Alamos during the Manhattan Project.
Joe W. Howland was a medical officer in charge of special problems in the US Army, stationed in Oak Ridge, Tennessee and Rochester, New York during the Manhattan Project.