National Museum of Nuclear Science & History
Acie Singleton was a laborator helper at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Millard Line worked for the A. S. Schulman Electric Company.
Samuel Allan Kline was a student majoring in physics at the University of Chicago before going to Los Alamos to work as a physicist.
Roald Wangsness was a staff worker at Los Alamos during the Manhattan Project.