National Museum of Nuclear Science & History
Fred Dennis worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Allen worked at the 300 Area at Hanford during the Manhattan Project.
T. F. Hanley, Jr. worked for Hanley & Company.
Monroe Messinger was born in New Jersey and grew up in Brooklyn and Long Island. He received a Bachelor of Science degree from the College of the City of New York.
