Starting at 2:00 p.m., Expo Commissioner General Pierre Dupuy officiated over the medal ceremony, in which participating nations and organizations received gold and silver medallions, and over the ceremony in which national flags were lowered in the reverse order to which they had been raised, with Canada's flag lowered first and Nigeria's lowered last. After Prime Minister Pearson doused the Expo flame, Governor General Roland Michener closed Expo at Place des Nations with the mournful spontaneous farewell: "It is with great regret that I declare that the Universal and International Exhibition of 1967 has come to an official end." All rides and the minirail were shut down by 3:50 p.m., and the Expo grounds closed at 4:00 p.m., with the last Expo Express train leaving for "Place d'Accueil" at that time. A fireworks display, that went on for an hour, was Expo's concluding event.