4 Va. Admin. Code § 25-40-5270

Current through Register Vol. 41, No. 8, December 2, 2024

Section 4VAC25-40-5270 - Measurement of air quantities

At least once each week, a certified foreman shall measure the volume 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.

4 Va. Admin. Code § 25-40-5270

Derived from VR480-05-1.2 § 15.251, eff. July 19, 1989.

Statutory Authority

§§ 45.1-161.3 and 45.1-161.294 of the Code of Virginia.