National Museum of Nuclear Science & History
H. E. Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Paul C. Shmiske served in the 603rd Air Engineering Squadron.
Hartman worked for Stone and Webster Engineering Corporation.
Herbert G. “Mac” MacPherson (1911-1993) was an American nuclear engineer. MacPherson’s expertise on graphite made him a valuable consultant for the Manhattan Project.
