National Museum of Nuclear Science & History
W. P. Lewis worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Charles Maier was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Earl W. Fisher served in the 603rd Air Engineering Squadron.
Ben Benjamin was a sergeant in the Special Engineer Detachment during the Manhattan Project. He had previously worked in industry making lenses and prisms, and was assigned to the Optics Group to help with photographing the Trinity Test.