National Museum of Nuclear Science & History
John Leahy worked for the United States Engineer District Office.
Richard Popham oversaw radiation safety in the Chemistry-Metallurgy Division at Los Alamos during the Manhattan Project.
Stephen Kasunic was a mechanical engineer. He worked on the Manhattan Project at Los Alamos, as a design engineer in the Weapons Experimental Experimental Physics (W-1) group on the steering committee for the gun-type bomb assembly.