US lawIndianaRegulationsTitle 312 — Natural Resources CommissionArticle 25 — ARTICLE 25. COAL MINING AND RECLAMATION OPERATIONSRule 1 — Definitions25-1-140312 IAC 25-1-140312 IAC 25-1-140 "Subsoil" definedLast amended: 2025Year: 2027Length: 7 wordsOfficial source Cite as Ind. Admin. Code tit. 312, r. 25-1-140Sec. 140. "Subsoil" means the B horizon.Previous312 IAC 25-1-139Next312 IAC 25-1-141