National Museum of Nuclear Science & History
Barr worked for Stone and Webster Engineering Corporation.
Thomas Farrell (1891 – 1967) was a major general in the US Army. Farrell was hand-picked by General Groves to serve as his deputy, or as the Deputy Commanding General of the Manhattan Project.
C. T. Vettel worked for the United States Engineer District Office.
Robert Schrader was completing his PhD in chemical engineering at MIT when he was selected to work on the Manhattan Project in Boston.
