National Museum of Nuclear Science & History
Iral B. Johns (1902-1987) was an American chemist. An associate professor of chemistry at Iowa State University, Iral B.
T. H. Barker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Harrie Massey (1908-1983) was an Australian physicist. A brilliant student of physics, Massey arrived from his native Australia at Cambridge College in the United Kingdom on an academic scholarship.
