Floyd J. Ritchie

M. N. Andrews

M. N. Andrews worked for the J.A. Jones Construction Company.

R. A. Bridgewater

R. A. Bridgewater worked for the Roane-Anderson Company.

W.G. Chmielewski

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

Carl A. Rudder