Section R11-1-1823. Measuring quantity of air at least once a week

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At least once each week, a qualified person shall measure the vol- ume of air entering the main intakes and leaving the main returns, the volume of the intake and return of each split, and the volume through the last open crosscuts or other ventilation openings nearest the active faces. Records of such measurements shall be kept in a book on the surface.

Historical Note

Former Rule 18:23.

                    
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