National Museum of Nuclear Science & History
John Butler worked for the H. K. Ferguson Company.
Virginia Meschke was a chemist and technician at the University of Chicago Met Lab. She specialized in plutonium chemistry.
William P. Norris was an associate bio-chemist at the University of Chicago Met Lab. After a stint at the Dow Chemical Company, he joined the Manhattan Project in July 1944.
Frederick Rich worked for the Union Carbide & Carbon Corporation.
