Section 225 ILCS 705/7.13The following signals shall be used at all the mines.
1.From the bottom to the top: One ring or whistle shall signify to hoist coal or the empty cage, and also to stop either when in motion.2.Two rings or whistles shall signify to lower cage.3.Three rings or whistles shall signify that men are coming up or going down; when return signal is received from the engineer the men shall get on the cage and the proper signal to hoist or lower shall be given.4.Four rings or whistles shall signify to hoist slowly, implying danger.5.Five rings or whistles shall signify accident in the mine and a call for a stretcher.6.Six rings or whistles shall signify hold cage perfectly still until signaled otherwise.7.From top to bottom, one ring or whistle shall signify: All ready, get on cage.8.Two rings or whistles shall signify: Send away empty cage. However, the operator of any mine may, with the consent of the State Mine Inspector, add to the code of signals. The code of signals in use at any mine shall be conspicuously posted at the top and at the bottom of the shaft, and in the engine room at some point in front of the engineer when standing at his post.