National Museum of Nuclear Science & History
John Tempka (1923-2017) was an American engineer. Tempka was born in Boydsville, Ohio. He was studying at the University of Detroit when he was recruited to join the U.
Cook worked at the 100-D Area at Hanford during the Manhattan Project.
Alan A. Jarrett was a research assistant the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
W. R. Roseberry worked for the Tennessee Eastman Corporation at the Y-12 Plant.
