The final survey shall show the entire worked out area, and all maps shall be extended to show the final areas.
225 ILCS 705/34.01
When any coal mine is worked out or is about to be abandoned or closed indefinitely, the operator shall make a final survey of the mine
Laws 1953, p. 701.
Official source: Illinois General Assembly. Reproduced from public-domain Illinois statutes; confirm against the official source for the current text. Not legal advice.