National Museum of Nuclear Science & History
Holl worked for Stone and Webster Engineering Corporation.
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.
Raymond Elliot Zirkle was a radiobiologist who worked at numerous Manhattan Project sites during World War II.
J. T. Holloway worked for the United States Engineer District Office.
