National Museum of Nuclear Science & History
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.
Betty Mokstad was a laboratory technician in the Chemistry Division at the University of Chicago Met Lab.
Underwood worked at the 200 West Area at Hanford during the Manhattan Project.
John Geffel worked at Oak Ridge as the Prime Building Contractor for Construction of the Oak Ridge facilities.
