P. P. Barr

Andrew H. MacMahon

Andrew H. MacMahon was the Chief Property Officer of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

M. M. Wainscott

Stanley Anhalt

Stanley Anhalt was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.

J. R. Stark

J. R. Stark worked for the Tennessee Eastman Corporation at the Y-12 Plant.