(210 ILCS 125/18) (from Ch. 111 1/2, par. 1218)
    Sec. 18. In the event of the inability of any party, or the Department, to procure the attendance of witnesses to give testimony or produce books and papers, such party or the Department may take the deposition of witnesses in accordance with the laws of this State. All testimony taken at a hearing shall be reduced to writing, and all such testimony and other evidence introduced at the hearing shall be a part of the record of the hearing.
(Source: P.A. 78-1149.)