Sec. 5.16. He shall measure the air current or cause the same to be measured at least once each week at the inlet and outlet, also at the last open cross-cut in each divis.
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/il/chapter-225/act-705/5-16A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Sec. 5.16. He shall measure the air current or cause the same to be measured at least once each week at the inlet and outlet, also at the last open cross-cut in each division or split, and shall keep a record of such measurements for the information of the State mine inspector.