H. R. Balls

H. B. Coleman

Walter M. Longfelt

Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

E. E. Chipman

Chipman worked in the United States Engineer District Office.

F. E. Busch

Busch worked at the 200 West Area at Hanford during the Manhattan Project.