(225 ILCS 705/9.02) (from Ch. 96 1/2, par. 902)
    Sec. 9.02. Before any person may be permitted to work in any mine he must furnish, to the mine manager or other official, an affidavit from his parent or guardian or next of kin, sworn and subscribed to before a notary public, that he is 18 or more years of age.
(Source: P.A. 79-876.)