National Museum of Nuclear Science & History
Piper worked for Stone and Webster Engineering Corporation.
J. R. Maddy worked for the United States Engineer District Office.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
H. L. Patterson worked for the Union Carbide & Carbon Corporation.
