Nuclear Museum Logo
Nuclear Museum Logo

National Museum of Nuclear Science & History

Mary M. Dailey

Research Assistant; Health DivisionChicago, IL

Manhattan Project VeteranProject Worker/Staff
Chicago Pile-1

Mary M. Dailey was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project. She was one of ten female scientists to sign the Szilard Petition, a document written by physicist Leo Szilard that attempted to prevent the United States from dropping the atomic bombs on Japan. 

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.

U. Koskela

X-10 Graphite Reactor

U. Koskela worked for Clinton Laboratories at the X-10 Reactor.

Hall Smith, Jr.

Y-12 Plant

Hall Smith, Jr. worked for the Tennessee Eastman Corporation at the Y-12 Plant.

V. J. McDonald

Oak Ridge, TN

V. J. McDonald worked for the Comstock-Bryant Electric Company.