National Museum of Nuclear Science & History
Sherwood Johnston worked for the Roane-Anderson Company.
Smith worked at the 100-D Area at Hanford during the Manhattan Project.
Lulu Slaughter was a laboratory assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
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.