National Museum of Nuclear Science & History
C. C. Sullins worked for the Combustion Engineering Company.
James Porterie was a security guard at Los Alamos tasked with guarding bomb components. Porterie went to Aberdeen Proving Ground for Ordnance School before volunteering for an assignment at Los Alamos.
Harry Petcher's flat feet meant he couldn't be drafted, but still had an obligation to work for the war effort.