Illinois Statutes Chapter 225. Professions,Occupations and Business Operations § 710/22. Map of underground workings

§ 22. The operator of every mine shall make and maintain, or cause to be made or maintained by a competent mining engineer or surveyor, a clear and accurate map or maps, with sections, if necessary, showing all the working of such mine. Such map shall be filed with the Department of Natural Resources and shall be brought up to date by such operator at one year intervals from the date it is filed. Such map or maps shall show all excavations, all parts of said mine that have been worked out or abandoned, and all underground workings.