Ind. Code § 8-1-1-8
(d) In addition to the published notice, the commission shall mail notice of the hearing and notice of the filing of applications or proceedings to persons, firms, limited liability companies, or corporations having competitive interests involved and to the representatives of any city or town affected by the hearing, application, or proceeding. Failure to mail the notices shall not be deemed to be jurisdictional, but may be ground for rehearing.
Formerly: Acts 1941, c.101, s.8; Acts 1943, c.244, s.1. As amended by P.L.59-1984, SEC.3; P.L.384-1987(ss), SEC.1; P.L.99-1989, SEC.2; P.L.8-1993, SEC.104.