Sam Tarson

Mary T. Burke

Mary T. Burke was a research assistant in the Metallurgical Laboratory (“Met Lab”) at the University of Chicago during the Manhattan Project.

Frederick M. Francis

R. A. Johnston

R. A. Johnston worked for the United States Engineer District Office.

Theodore Hall

Theodore “Ted” Hall (1925-1999) was an American physicist and an atomic spy who passed along detailed information about the implosion-type “Fat Man” bomb and several processes for purifying plutonium to the Soviet Union.