312 IAC 25-1-156
312 IAC 25-1-156 "Underground development waste" defined
Cite as Ind. Admin. Code tit. 312, r. 25-1-156
Sec. 156. "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.