225 ILCS 705/31.18
Current through Public Act 103-1052
In all mines starting operation after July 1, 1947, the ventilating fan shall be installed on the surface in a fireproof building.
225 ILCS 705/31.18
In all mines starting operation after July 1, 1947, the ventilating fan shall be installed on the surface in a fireproof building.
225 ILCS 705/31.18