W. R. Hardleben

M. C. Stinson

George Mallinckrodt

George Mallinckrodt was a physicist at the Manhattan Project’s Los Alamos, NM facility. He also worked at Argonne National Laboratory, the successor of the University of Chicago’s Metallurgical Laboratory (“Met Lab”).

L . H. Roberts

L. H. Roberts worked for the H. K. Ferguson Company.

William L. Laurence

Although the flow of information about the Manhattan Project was tightly controlled, New York Times reporter William L.