Clarke C. Mathison

Richard K. Diehl

Ben Benjamin

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.

Marle L. Velde

Marle Velde worked for the Kellex Corporation at the K-25 Plant.

George A. White

George White worked for the J.A. Jones Construction Company.