(225 ILCS 710/45.16) (from Ch. 96 1/2, par. 4269)
    Sec. 45.16. Bell signals. The following signals shall be used: one bell, hoist (when engine is at rest); one bell, stop (when engine is in motion); 2 bells, lower; 3 bells, people on cage about to ascend or descend; 4 bells (when shaft sinking is in progress), blasting signals; 9 bells, or flashing of electric lights 9 times in quick succession, danger signal, all people to get out of the mine.
(Source: P.A. 87-1133.)