National Museum of Nuclear Science & History
Mehann worked in the 200 West Area at Hanford during the Manhattan Project.
Jerry Grubaugh, Jr. served as a private first class in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Next Objective.
Marvin Wilkening, a physicist, traveled the Grand Circuit of the Manhattan Project, pursuing his specialty of measuring neutron intensity.