National Museum of Nuclear Science & History
W. E. Weatherwas worked for the Midwest Piping and Supply Company.
Dr. Karl Larsen worked at Massachusetts Institute of Technology during the Manahattan Project. While there, he conducted heavy-water research by spectrum analysis, which was one of the prerequisites to the early atomic bombs.
Elsie Mae Freeman was born in Missouri in 1900. She graduated high school in Chicago. After graduating, Elsie was recruited to work in a lab at the University of Chicago in 1919.
Charles Helmers worked for the J.A. Jones Construction Company.