Section 5.55 - Conduct of investigation(a) The General Counsel may(1) exercise the authority granted in § 2.5 of the Commission's Rules of Practice to administer oaths and affirmations; and(2) conduct investigational hearings pursuant to part 2 of these rules. He may also recommend that the Commission issue compulsory process in connection with an investigation under this section.(b) Witnesses in investigations shall have the rights set forth in § 2.9 of the Commission's Rules of Practice.