National Museum of Nuclear Science & History
H. L. Ray worked for the Kellex Corporation at the K-25 Plant.
Andrew Rubis served in the First Ordnance Squadron.
Otto Frisch (1904-1979) was an Austrian-born physicist. Frisch joined the Manhattan Project in 1943, but his most important contribution to the project came in 1940 in England.
Vanstrum began working on the Manhattan Project soon after receiving his engineering degree from the University of Minnesota.
