Notice of hearings

(a) Persons notified. Except where the commissioners shall otherwise direct, the commission shall give written notice of a hearing in any pending matter to all parties, to all persons who have theretofore become intervenors, to all persons otherwise required by statute to be notified, and to such other persons as have filed with the commission their written request for notice of hearing in a particular matter. Also the commission shall give written notice to such additional persons as the commissioners shall direct. The commission may give notice by newspaper publication and by such other means as the executive secretary shall deem appropriate and advisable. (b) Contents of notice. Notice of a hearing shall include but shall not be limited to the following: (1) a statement of the time, place and nature of the hearing; (2) a statement of the legal authority and jurisdiction under which the hearing is to be held; (3) a reference to the particular sections of the statutes and regulations involved; (4) a short and plain statement of fact describing the nature of the hearing and the principal facts to be asserted therein. A list of all persons named or known to the commission as parties may be included in the initial notice of hearing given in each contested case, but shall be omitted from any subsequent notice of hearing therein, except where the commissioners shall otherwise direct.