National Museum of Nuclear Science & History
A. G. Underwood worked for the J.A. Jones Construction Company.
Davidson worked for Stone and Webster Engineering Corporation.
Julian N. Bernacchi had three main assignments in the Manhattan Project. The most significant was as the Security Officer of Dr.
Gertrude Nissenbaum was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
T. A. Gamble worked for Clinton Laboratories at the X-10 Reactor.
