(225 ILCS 720/4.04) (from Ch. 96 1/2, par. 7904.04)
Sec. 4.04.
Exploratory Holes.
All exploratory holes no longer necessary
for underground mining shall be filled or sealed, maximizing to the extent
technologically and economically feasible return of mine and processing
waste, tailings, and any other waste incident to the underground mining
operation, to the mine workings or excavations.
(Source: P.A. 81-1015.)
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