National Museum of Nuclear Science & History
Frank Vaughan was a research associate at the Chicago Met Lab during the Manhattan Project.
Hannibal Fraga was an engineer. He joined the Manhattan Project in the fall of 1944. He worked in the inspection department at Los Alamos.
William Lowe was studying chemical and metallurgical engineering when World War II began. He was appointed to the Special Engineering Detachment and arrived in Los Alamos and began assisting chemist Arthur Wahl.
Fred Sexton worked for the Tennessee Eastman Corporation at the Y-12 Plant.