William J. Jenceleski

Robert Van Gemert

Robert van Gemert worked in procurement and supply for Los Alamos during the Manhattan Project. He was also involved in organizing preparations for the Trinity Test.

Ernest J. Hansen

William Dunnagan

William Dunnagan served in the 603rd Air Engineering Squadron. 

Cloyd Marvin

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.