National Museum of Nuclear Science & History
J. P. Marus worked for the J.A. Jones Construction Company.
Harry Allen worked in procurement and supply for Los Alamos during the Manhattan Project. He was also involved in organizing preparations for the Trinity Test.
John Butler worked for the H. K. Ferguson Company.
Margaret Ramsey Keck (1923-2016) was an American physicist. Soon after she graduated in 1945 from the University of Rochester with a degree in physics, Keck was hired by the Manhattan Project to work at Los Alamos.