National Museum of Nuclear Science & History
Chapman worked at the 200 West Area at Hanford during the Manhattan Project.
Stanislaw Ulam (1909-1984) was a Polish-American mathematician. Ulam was born in 1909 in Lvov, Austria-Hungary (present-day Ukraine).
Copeland worked in the United States Engineer District Office.
L. G. Piercy worked for the Tennessee Eastman Corporation at the Y-12 Plant.