John W. Porter

J. A. Marshall

J. A. Marshall worked for the Union Carbide & Carbon Corporation.

Prisda K. Rosen

Prisda Rosen was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Robert Gustison

Robert Gustison was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H. Lanz, Jr.