Two copies of all pleadings and other documents required for any
administrative proceeding provided herein shall be served on the
attorneys for the Department of Labor. One copy shall be served on the
Associate Solicitor, Division of Fair Labor Standards, Office of the
Solicitor, U.S. Department of Labor, 200 Constitution Avenue, NW.,
Washington, DC 20210, and one copy on the Attorney representing the
Department in the proceeding.