(225 ILCS 705/33.11) (from Ch. 96 1/2, par. 3311)
    Sec. 33.11. The State Mine Inspector or the Mining Board may order a survey to be made of the workings of any mine in addition to the regular annual survey, the results to be extended on the maps of the same and copies thereof, whenever the safety of the workers, unlawful injury to the surface, unlawful encroachment upon adjoining property, or the safety of an adjoining mine requires it.
(Source: P.A. 81-992.)