National Museum of Nuclear Science & History
C. O. Hubbard worked for the Roane-Anderson Company.
Jacob H. Wiens was a nuclear physicist who worked on the Manhattan Project from 1943 to 1945. He later worked at the Lawrence Livermore National Laboratory where he interacted with Luis Alvarez.
Ivan Behymer came out from the Dupont 'black powder' plant in Illinois to Richland, Washington (Hanford) in March of 1943.
Bernstein worked in the United States Engineer District Office.