National Museum of Nuclear Science & History
Jay Wechsler enlisted in the Army in 1943 and spent several months at Oak Ridge working as an Army construction engineer, In the winter of 1943, he was suddenly transferred to Los Alamos, where he began working directly with Otto Frisch.
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.
Clarence Trammell was a staff worker at Los Alamos during the Manhattan Project.
