CODE OF VIRGINIA

VENTILATION WITH AIR FROM CERTAIN AREAS (§ 45.1-161.227)

Active face workings shall not be ventilated with air that has passed through
worked-out areas or has been used to ventilate pillar lines. This section shall
not apply to air which is being used to ventilate an active pillar line and
rooms which are necessary to establish and maintain the pillar line.

HISTORY: Code 1950, § 45-60.5; 1954, c. 191; 1966, c. 594, § 45.1-62; 1993, c.
442; 1994, c. 28; 1996, c. 774; 1999, c. 256.