National Museum of Nuclear Science & History
Welch worked at the 200 West Area at Hanford during the Manhattan Project.
Betz worked at Los Alamos during the Manhattan Project.
Major Frank P. Erichsen worked at 100-F Area at Hanford during the Manhattan Project. One of the leading U.
Major John A. Derry was a top military assistant, mainly working in Washington D.C., during the Manhattan Project.
