1933, this tradition has only been broken once, when Brian Dickson of Manitoba was named to succeed Bora Laskin of Ontario in 1984. Duties The chief justice's central duty is to preside at hearings before the Supreme Court. The chief justice presides from the centre chair. If the chief justice is absent, the senior puisne judge presides. Judicial Council The chief justice chairs the Canadian Judicial Council, which is composed of all chief justices and associate chief justices of superior courts in Canada. This body, established in 1971 by the Judges Act, organizes seminars for federally appointed judges, coordinates the discussion of issues of concern to the judiciary, and conducts inquiries, either on public complaint or at the request of a federal or provincial minister of justice or attorney general, into the conduct of any federally appointed judge. Other duties The chief justice is sworn as a member of the Privy Council prior to taking the judicial oath of office. The chief justice also sits on the advisory council of Canada's highest civilian order, the Order of Canada. In practice however, the chief justice abstains from voting on a candidate's removal from the order, presumably because this process has so far only applied to individuals convicted in a lower court of a criminal offence, and could create a conflict of interest for the chief justice if that individual appealed their conviction to the Supreme Court. Under the Electoral Boundaries Readjustment Act, each province has a three-person commission responsible for modifying that province's federal ridings. The chair of each such commission is appointed by the chief justice of that province; if no appointment is made by the provincial chief justice, the responsibility falls to the chief justice of Canada. Administrator of Canada The Constitution Act, 1867 provides that there can be an "Administrator for the Time being carrying on the Government of Canada." The Letters Patent, 1947 respecting the Office of Governor General provide that, should the governor general should die, become incapacitated, or be absent from the country for a period of more than one month, the chief justice or, if that office is vacant, the senior puisne justice, of the Supreme Court would become Administrator of Canada and exercise all the powers and duties of the governor general. This has happened on four occasions: chief justices Lyman Duff and Robert Taschereau each did so, in 1940 and 1967 respectively,