National Museum of Nuclear Science & History
S. J. Helfman worked for the J.A. Jones Construction Company.
Arthur Daniel Schelberg (1921-2009) was an American physicist. Schelberg was born in New York City. He studied at physics in Princeton, and was recruited to join the Manhattan Project at Los Alamos in 1943.
Hockett worked for Stone and Webster Engineering Corporation.
Brent worked at the 200 West at Hanford during the Manhattan Project.
