 After the water reached a concentration of 99.75%, the heavy water was then transported by rail to the University of Chicago where it was used as a potential moderator for the first nuclear reactors constructed in the United States.Following the end of the war, DuPont ended their operations at the MOW and the site was leased to various chemical companies until the early 1950s before standing vacant until 1962 when the area was purchased from the United States General Services Administration for the price of $1.25 million by the Morgantown Community Association.The property was then conveyed to the newly created Morgantown Ordnance Works, Inc., owned by local industrialist J.W.