National Museum of Nuclear Science & History
J. M. Lockmiller worked for the Fercleve Corporation.
Clarke worked in the United States Engineer District Office.
Barr worked for Stone and Webster Engineering Corporation.
H. E. Burns worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
