  During the second world war, Canada made several important contributions to
the wartime work of the Manhattan Project. The three main contributions were:
establishing a domestic nuclear research laboratory in Montreal to investigate
heavy water reactors, creating supply chains to provide uranium oxide, heavy
water and polonium to the Manhattan Project, and the direct contributions of
several Canadians living the United States. These wartime efforts helped
establish a legacy of nuclear research in Canada which has persisted to the
present day.
