National Museum of Nuclear Science & History
Mathias A. Klinger was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
John Chipman was an American engineer. Chipman was born in 1897 in Tallahassee, Florida. He received B.
Howard H. Stevans served in the 390th Air Service Group.
Delbert Ball was a procurement officer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
