Clarence D. McCain

James J. Nickson

James J. Nickson was a medical doctor and Section Chief of H-III Medical Industrial Hazards and Health Physics in the Health Division at the University of Chicago Met Lab.

William F. Masterson

H. G. Mullican

H. G. Mullican worked for the J.A. Jones Construction Company.

Gertrude Nissenbaum

Gertrude Nissenbaum was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.