National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Jerrold Zacharias (1905-1986) was an American physicist who became the Director of the Laboratory for Nuclear Science and Engineering at MIT.
Mary Alice Nachtrieb was a chemist who worked at Los Alamos during the Manhattan Project. Her speciality was in plutonium chemitsry.