National Museum of Nuclear Science & History
J. Powell worked for the Union Carbide & Carbon Corporation.
Cloud worked for Stone and Webster Engineering Corporation.
Levey was a member of the Army Special Engineering Detachment who worked at the K-25 plant at Oak Ridge during the Manhattan Project.
Cloyd Marvin had been drafted into the Army, interrupting his education at Haverford University, in 1943 and joined the Special Engineer Detachment as a technician third grade, later being assigned to Los Alamos National Labs in 1947.
