S. H. Butt

H. I. McClenahan

Nathalie Goldowski

Nathalie Goldowski was a metallurgist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”).

D. I. Nicholson

D. I. Nicholson worked for the United States Engineer District Office.

A. L. Cronholm

Cronholm worked at the 100-F Area at Hanford during the Manhattan Project.