National Museum of Nuclear Science & History
Head worked for Stone and Webster Engineering Company.
N. J. Johnson worked for Hanley & Company.
Howard Parsons was an American physicist. Parsons was born in Chicago in 1920. He receieved a B.S. from the University of Chicago, and shortly afterwards was hired to work on the Manhattan Project as a research assistant at the Chicago Met Lab.
Figenbaum worked for Stone and Webster Engineering Corporation.
