National Museum of Nuclear Science & History
McCampbell worked for Stone and Webster Engineering Corporation.
Bob Porton graduated from the University of Florida, and enlisted in the Army when the United States joined WWII.
W. G. Chmielewski was a carpenter at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Richard Popham oversaw radiation safety in the Chemistry-Metallurgy Division at Los Alamos during the Manhattan Project.