(a) Except where a longer period of notice is provided by other provisions of this title relative to particular matters, not less than 10 days in advance the commissioner shall give notice of the time and place of the hearing, stating the matters to be considered thereat. If the persons to be given notice are not specified in the provision pursuant to which the hearing is held, the commissioner shall give such notice to all persons whose pecuniary interests are to be directly and immediately affected by such hearing.
(b) If any such hearing is to be held for consideration of rules and regulations of the commissioner or for the consideration of other matters which under subsection (a) of this section would otherwise require separate notices to more than 50 persons, in lieu of the notice required under such subsection the commissioner may give notice of the hearing by publication thereof in two or more newspapers of general circulation in this state at least once each week during the four weeks immediately preceding the week in which the hearing is to be held. The published notice shall state the time and place of the hearing and shall specify the matters to be considered thereat.
(c) All such notices, other than published notices, shall be given as provided in Section 27-2-18.
(d) This section does not apply as to hearings provided for in Chapter 13 of this title.