(a) Who may serve. Any delegate of the Secretary authorized under
section 1010.912 of this chapter to issue a summons, or any other
person authorized by law to serve summonses or other process, is hereby
authorized to serve a summons issued under this chapter.
(b) Manner of service. Service of a summons may be made—
(1) Upon any person, by registered mail, return
receipt requested, directed to the person summoned;
(2) Upon a natural person by personal delivery;
or
(3) Upon any other
person by delivery to an officer, managing or general agent, or any
other agent authorized to receive service of process.
(c) Certificate of service. The summons shall contain a certificate of service to be signed
by the server of the summons. On the hearing of an application for
enforcement of the summons, the certificate of service signed by the
person serving the summons shall be evidence of the facts it states.