M. W. Tattu

Billy E. Willoughby

Frank R. Goodman

Goodman worked in the United States Engineer District Office.

Charles Vanden Bulck

C. Vanden Bulck worked for the United States Engineer District Office.

W.G. Chmielewski

W. G. Chmielewski was a carpenter at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.