National Museum of Nuclear Science & History
George I. Ray worked for the G.G. Ray Company.
Edmund Scheuer served in the Army at Los Alamos during the Manhattan Project.
R. W. Erickson worked at the 200 West Area at Hanford during the Manhattan Project.
Joseph H. Heartberg was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
