National Museum of Nuclear Science & History
Barrett worked for Stone and Webster Engineering Corporation.
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.
R. J. Dunbar worked for the Tennessee Eastman Corporation at the Y-12 Plant.
M. B. Stringfellow worked for the Edenfield Electric Company.
