National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Fred Patrick worked in DuPont's Chamber Works in Deepwater, NJ in 1943 on Manhattan Project work.
McCoig worked in the 100 F Area at Hanford during the Manhattan Project.
F. J. Ward worked for the J.A. Jones Construction Company.