National Museum of Nuclear Science & History
Arthur Sievert worked for Hanley & Company.
Minnesota native Roger Hultgren worked for the DuPont Company as a chemist during the early 1940s, initally assigned to the Jolliet, Illinois munitions plans.
Ledbetter worked in the 200 East Area at Hanford during the Manhattan Project.
Hare worked at the 300 Area at Hanford during the Manhattan Project.
Attended the Massachusetts Institute of Technology.
