National Museum of Nuclear Science & History
Attended Purdue University.
Helen J. Arson was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Madsen worked in the 100 D Area at Hanford during the Manhattan Project.
John A. Simpson Jr. (1916-2000) was a distinguished American nuclear physicist and astrophysicist. Simpson was born on November 3, 1916 in Portland, Oregon.