Section 355IAC8-2-24. "Sinkhole" defined  


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  •    "Sinkhole" means a natural depression in the surface of the land caused by the collapse of the roof of a cavern or subterranean passage. (State Chemist of the State of Indiana; 355 IAC 8-2-24; filed Feb 16, 2012, 11:50 a.m.: 20120314-IR-355110364FRA)