National Museum of Nuclear Science & History
Joseph Mullaney was a staff worker at Los Alamos during the Manhattan Project.
Jack L. Callan was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Margaret H. Dike was born in Prescott, Arizona, and she grew up in Cimarron, New Mexico. Before the war, Dike worked at the Department of Terrestrial Magnetism in Washington, DC.
