National Museum of Nuclear Science & History
Richard Claassen was a research assistant at the SAM Lab at Columbia University from 1944 to 1946. While there, he built and used fluidic systems to test for unusual leaks in diffuser tubes.
Anna Barbic was a laboratory assistant in the the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
F. M. Downs worked for the J.A. Jones Construction Company.
