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National Museum of Nuclear Science & History

Related Profiles

Helena Calloway

Chicago, IL

Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Irwin H. Floyd

Los Alamos, NM

R. McKeon

Los Alamos, NM

E. J. O’Black

T-Plant/200 Areas

O’Black worked in the 200 East Area at Hanford during the Manhattan Project.