Franklin V. Summers

Raymond L. Dujack

Raymond Dujack was a young lab technician at the Special Alloyed Materials (SAM) Laboratories at Columbia University.

George P. Tracey

Sampson A. Powers

Sampson Powers worked for the Tennessee Eastman Corporation at the Y-12 Plant.

Arthur “Pete” V. Peterson

Colonel Arthur “Pete” V. Peterson was the Army’s area engineer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.