National Museum of Nuclear Science & History
Mary Alice Nachtrieb was a chemist who worked at Los Alamos during the Manhattan Project. Her speciality was in plutonium chemitsry.
Leo P. Hassen was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Kenneth Walsh was an American chemist. Walsh studied as an undergrad at Yankton College in South Dakota.
