(225 ILCS 705/33.01) (from Ch. 96 1/2, par. 3301)
    Sec. 33.01. The operator of every underground coal mine, every proposed underground coal mine and every underground mine to be reopened in the State shall make, or cause to be made, an accurate map or plan of such mine, drawn to a scale not smaller than four hundred feet to the inch. All measurements shall be in feet and decimals of a foot. On such maps shall appear the name of the State, county and township in which the mine is located, the designated mine, the name of the company or owner, the certificate of the mining engineer or surveyor as to the accuracy and date of the survey, the north point and the scale to which the drawing is made.
(Source: Laws 1957, p. 2413.)