(225 ILCS 705/31.10) (from Ch. 96 1/2, par. 3110)
Sec. 31.10. If the State Mine Inspector finds methane with a permissible flame safety lamp, permissible methane detector, air analysis or other recognized means, in the amount of 0.25% or more, in any open workings of such mine when tested at a point not less than 12 inches from the roof, face or rib the mine shall be classified as gassy. Nothing in this Act shall preclude the reclassification of a mine that has been classified gassy if a subsequent examination, made by the State Mine Inspector in the method provided herein, shows the methane content to be less than 0.25%.
(Source: Laws 1953, p. 701.)
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Last modified: February 18, 2015