John L. O’Gara

Martha Zukas

Martha Zukas was a nurse at Oak Ridge and Los Alamos during the Manhattan Project. One of nine children, Zukas grew up in Ellwood City, PA.

Susan Zagaria

Susan Zagaria was a laboratory technician in the health division at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.

Howard W. Bigelow

N. Levenson

N. Levenson worked for the Tennessee Eastman Corporation at the Y-12 Plant.