National Museum of Nuclear Science & History
U. W. Allen worked for the William A. Pope Company.
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.
Bishop worked at the 300 Area at Hanford during the Manhattan Project.
Cummings worked for Stone and Webster Engineering Corporation.