National Museum of Nuclear Science & History
J. J. Maroone worked for the Union Carbide & Carbon Corporation.
Stanislaw Ulam (1909-1984) was a Polish-American mathematician. Ulam was born in 1909 in Lvov, Austria-Hungary (present-day Ukraine).
Helen Stokes was a staff worker at Los Alamos during the Manhattan Project.
Joseph W. Giroux was a Private First Class in the 1st Ordnance Squadron. Giroux was born in Worthington in the district of Sudbury, Ontario, Canada, on October 24, 1921.