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.
Walker worked at the 300 Area at Hanford during the Manhattan Project.
Jose Romero was a staff worker at Los Alamos during the Manhattan Project.
