(a) Service of documents under this part shall be made by delivery
to the person, an officer of a corporation, or
attorney of record, or by mailing the document to the last known
address of the person, officer, or attorney. If service is made by
mail, it shall be considered complete upon mailing. Unless otherwise
provided in this subpart, service need not be made by certified mail.
If service is made by delivery, it shall be considered complete upon
actual receipt by the person, officer, or attorney; upon leaving it at
the person's, officer's or attorney's office with a clerk or person in
charge; upon leaving it at a conspicuous place in the office if no one
is in charge; or by leaving it at the person's or attorney's residence.
(b) If a complaint has been filed pursuant to Sec. 726.309, two
copies of all documents filed in any administrative proceeding under
this subpart shall be served on the attorneys for the Department of
Labor. One copy shall be served on the Associate Solicitor, Black Lung
Benefits Division, Room N-2117, Office of the Solicitor, U.S.
Department of Labor, 200 Constitution Ave., NW., Washington, DC 20210,
and one copy on the attorney representing the Department in the
proceeding.
(c) The time allowed a party to file any response under this
subpart shall be computed beginning with the day following the action
requiring a response, and shall include the last day of the period,
unless it is a Saturday, Sunday, or federally-observed holiday, see
Sec. 725.311 of Part 725 of this subchapter, in which case the time
period shall include the next business day.
