National Museum of Nuclear Science & History
Powell Webb worked for the United States Engineer District Office.
Lloyd J. Williams was a staff worker at Los Alamos during the Manhattan Project.
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.
John “Jack” Carleton Healey, a colonel in the U.S. Air Force, participated in the Manhattan Project as part of General Groves’ staff in Washington, DC.
