(225 ILCS 710/45.15) (from Ch. 96 1/2, par. 4268)
    Sec. 45.15. It shall be unlawful for any person to interfere with or impede any signaling in any mine, or knowingly to damage any signal system or knowingly to give or cause to be given any wrong signal within the mine or to ride upon any cage, skip, bucket, or other conveyance at a time when signals have been given informing the hoisting engineer that no person is so riding.
(Source: Laws 1945, p. 1035.)