National Museum of Nuclear Science & History
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. R. Henson worked for Clinton Laboratories at the X-10 Reactor.
Mary Alice Nachtrieb was a chemist who worked at Los Alamos during the Manhattan Project. Her speciality was in plutonium chemitsry.
Dreeszan worked in the United States Engineer District Office.