George P. Sibulski

Otto Hillig

Otto Hillig was a Danish machinist who helped work on various projects in the early days of the Manhattan Project.

Victor C. Hamister

Victor C. Hamister was a consultant to the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

Sylvester H. Stinnett

Betty J. Tellefson

Betty Tellefson was a staff worker at Los Alamos during the Manhattan Project.