National Museum of Nuclear Science & History
H. L. Nussmeyer worked for the United States Engineer District Office.
John Black worked for the J.A. Jones Construction Company.
Keene worked in the 200 East area at Hanford during the Manhattan Project.
Helen Schneider was a staff worker at Los Alamos during the Manhattan Project.
Louis Slotin (1910-1946) was a Canadian physicist. Shortly after World War II, he died from radiation sickness contracted during a dangerous experiment conducted at Los Alamos.