Mac Bielecki

Myrtle E. Karcher

Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Robert C. Hirt

Robert C. Hirt was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

S. L. Ashburn

S. L. Ashburn worked for the Roane-Anderson Company.

Edwin F. Wakefield