(225 ILCS 705/31.21) (from Ch. 96 1/2, par. 3121)
Sec. 31.21.
When the ventilating fan at any mine fails or stops,
immediate action shall be taken to cut off the electric power and
withdraw the workers from the face regions of the mine. In gassy mines
if the ventilation is restored within a reasonable time, the face
regions and other places where methane is likely to accumulate shall be
re-examined by competent personnel, and if such region and places are
found to be free from explosive gas the power may be restored and work
resumed. If the ventilation is not restored within a reasonable time all
underground employees shall be removed from the mine. In non-gassy mines
if the ventilation is restored within a reasonable time the power may be
turned on and work resumed without the necessity of re-examination.
(Source: P.A. 81-992.)
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