Canadian Contributions to the Manhattan Project and Early Nuclear Research

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