National Museum of Nuclear Science & History
Greening worked in the United States Engineer District Office.
John Ursch served in the 1395th Military Police Aviation.
Gordon Knobeloch was drafted into the Army directly out of Washington University in St. Louis. He was deployed to Los Alamos.
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.
