National Museum of Nuclear Science & History
Hatfield worked in the United States Engineer District Office.
Haskell Sheinberg arrived at Los Alamos in late 1944 as part of the Special Engineer Detachment. Sheinberg’s first assignment was to purify plutonium under the direction of Arthur Wahl, one of the co-discoverers of plutonium.
W. F. Gibson worked for the Roane-Anderson Company.
