John D. Martin

R. J. Brown

Raymond L. Brin

Raymond L. Brin was a Technical Sargeant in the Army’s Special Engineer Detachment. He worked at Los Alamos during the Manhattan Project, and traveled to Tinian Island as a member of Project Alberta.

Helen E. Krinek

Helen E. Krinek was a research assistant in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Charles Jackson