Konrad T. Semrau

Helen E. Mulvihill

Helen Mulvihill was the commander officer of the Women’s Army Corps at Los Alamos during the Manhattan Project.

Ralph Gates

Ralph Gates (1925-2018) was a chemical and electrical engineer who was recruited to the Manhattan Project as a part of the Special Engineer Detachment in early 1945.

Miriam Schmitt

Clarence H. Mathews

Clarence H. Mathews was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.