National Museum of Nuclear Science & History
Rupea worked at the 300 Area at Hanford during the Manhattan Project.
Gerhardt Padalski was a staff worker at Los Alamos during the Manhattan Project.
George Kistiakowsky (1900-1982) was a Ukrainian-American physical chemist. He joined the Manhattan Project in late January 1944, leaving his role as chief of the National Defense Research Committee’s Explosives Division.
