National Museum of Nuclear Science & History
John W. Calkin graduated from Columbia University in 1933. He then earned a Ph.D. in mathematics from Harvard.
Raymond. J. Bosnak was an electrical engineer at Chicago when he enlisted in the Army. He was assigned to the Special Engineer Detachment at Los Alamos.
Delbert Johnson was a mechanical engineer with the Special Engineer Detachment (SED) at Los Alamos. Johnson worked under 1st Lieutenant Howard C.
