National Museum of Nuclear Science & History
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.
E. H. Mantz worked for Hanley & Company.
George C. Hollowwa was a member of the Army Air Corps and a weapons expert. During and after World War II, he was involved in the assembly and testing of atomic weapons.
Alfred Carson was a mechanical engineer in the Special Engineering Detachment, and spent time at both Oak Ridge, Tennessee, and Los Alamos, New Mexico.
