Section 312IAC25-1-156. "Underground development waste" defined

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"Underground development waste" means waste rock mixtures of coal, shale, claystone, siltstone, sandstone, limestone, or related materials that are excavated, moved, and disposed of during development and preparation of areas incident to underground mining activities. (Natural Resources Commission; 312 IAC 25-1-156; filed Jun 21, 2001, 2:53 p.m.: 24 IR 3426, eff Dec 1, 2001; readopted filed May 29, 2007, 9:51 a.m.: 20070613-IR-312070146RFA; readopted filed Sep 19, 2013, 10:12 a.m.: 20131016-IR-312130125RFA)

                    
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