National Museum of Nuclear Science & History
J. A. Speas worked for the J.A. Jones Construction Company.
Jensen worked for Stone and Webster Engineering Corporation.
Mayford Huff worked for the United States Engineer District Office.
Alvin Graves (1909-1965) was an American physicist. Graves was invited to join the University of Chicago Metallurgical Laboratory and in 1942 he accepted the position and became a member of the Manhattan Project.
