"Long dry kiln" means a kiln 14 feet or larger in outside diameter, 400 feet or larger in length, which employs no preheating of the feed in the cyclone chambers, and the inlet feed to the kiln is dry.
Ill. Admin. Code tit. 35, § 211.3483
Added at 25 Ill. Reg. 4582, effective March 15, 2001