National Museum of Nuclear Science & History
DeNagy worked in the United States Engineer District Office.
Vosmer worked at the 300 Area at Hanford during the Manhattan Project.
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.