1. A. Crosscuts shall be made between entries and between rooms as provided in the approved roof control plan.
2. B. Every crosscut between an intake and a return air course shall be closed, except the one nearest the face. A crosscut between rooms shall be closed where necessary to provide adequate ventilation at the working face.
3. C. Where practicable, a crosscut shall be provided at or near the face of each entry or room before the place is abandoned.
4. D. No entry or room shall be started off an entry beyond the last open crosscut.

Code 1950, § 45-60.4; 1954, c. 191; 1966, c. 594, § 45.1-59; 1978, c. 729; 1994, c. 28, § 45.1-161.223; 1996, c. 774; 2021, Sp. Sess. I, c. 387.