National Museum of Nuclear Science & History
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.
R. P. Ellis worked for the Union Carbide & Carbon Corporation.
E. J. Risdon worked for the Roane-Anderson Company.
