National Museum of Nuclear Science & History
E. A. Kehtel worked for the J.A. Jones Construction Company.
Robert JS Brown was a member of the Special Engineer Detachment at Los Alamos. He worked under Don Hornig on the electrical aspects of detonation for the plutonium bomb.
Arthur Weisberg was a mechanical engineer with the Special Engineer Detachment assigned to the Metallurgical Lab at the University of Chicago.