Julius L. Berrenson

R. E. Engel

Engel worked in the United States Engineer District Office.

Hester Moore

Hester Moore was a supervisor in the Communications Department at the Manhattan Project’s Hanford, Washington site during World War II.

J.H. Ruffner

Harvey B. Lemon

Harvey B. Lemon (1885-1965) was a consultant to the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.