225 ILCS 705/23.04

A refuge place for men coming out at the close of the day's work shall be provided off the main bottom of the cage room in shaft mines, at a place and of such size as shall be approved by the State Mine Inspector. The refuge place shall not be more than 400 feet from the shaft where men are hoisted and the refuge place shall be kept free from loose material. When leaving the refuge place to be hoisted out, the men shall obey the rules of the mine.