National Museum of Nuclear Science & History
John Chipman was an American engineer. Chipman was born in 1897 in Tallahassee, Florida. He received B.
Downs worked in the United States Engineer District Office.
Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Melvin S. Friedman was an associate chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
