US lawIndianaRegulationsTitle 326 — Air Pollution Control DivisionArticle 1 — ARTICLE 1. GENERAL PROVISIONSRule 2 — Definitions1-2-87326 IAC 1-2-87326 IAC 1-2-87 "Underfire" definedLast amended: 2026Year: 2027Length: 16 wordsOfficial source Cite as Ind. Admin. Code tit. 326, r. 1-2-87Sec. 87. The term used to describe the combustion mechanism by which coke ovens are heated.Previous326 IAC 1-2-86Next326 IAC 1-2-88