National Museum of Nuclear Science & History
W. T. Sergeant worked for the United States Engineer District Office.
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.
Helen Mannon worked for the Roane-Anderson Company.
Peter Oppenheimer is a carpenter, and the son of J. Robert Oppenheimer. Early Life Peter was born in 1941 in California, and moved with his parents to Los Alamos when his father became the course director of Los Alamos [National] Laboratory.
