National Museum of Nuclear Science & History
L. A. Castellanos worked for the J.A. Jones Construction Company.
Willingham worked at the 200 West Area at Hanford during the Manhattan Project.
Warren Sheehan joined Mound Laboratory in April 1956. He spent the first half of his career in health physics, or radiation safety, where he developed a new methodology for determining the amount of plutonium in urine.
Attended the General Motors Institute.
