National Museum of Nuclear Science & History
William Jacob was a staff worker at Los Alamos during the Manhattan Project.
See worked for Stone and Webster Engineering Corporation.
Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
H. M. Schleiden worked for the A. S. Schulman Electric Company.
Baldwin Sawyer is an American metallurgist. After graduating from Yale with a B.S. in Physics in 1943, Sawyer joined the Manhattan Project at the University of Chicago.