National Museum of Nuclear Science & History
R. F. Ridgeway worked for the Roane-Anderson Company.
J. R. Hatfield worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Carl R. Erickson served in the 320th Troop Carrier Squadron.
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.
H. L. Russell worked for the United States Engineer District Office.
