225 ILCS 705/26.14
Current through Public Act 103-1052
The roof and walls of the passageway leading from the bottom of the hoisting shaft and the air and escapement shaft designated as such under the law, within a distance of 300 feet from the bottom of either of said shafts, shall be of fireproof construction, except that the coal rib or pillar may be used as a wall in such passageways.
225 ILCS 705/26.14