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.
Gerlach worked at the 100-D Area at Hanford during the Manhattan Project.
M. E. Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
