§ 45.2-836 Quantity of air
A. The quantity of air passing through the last open crosscut shall be at least 9,000 cubic feet per minute. However, the quantity of air reaching the last open crosscut in a pillar-recovery section may be less than 9,000 cubic feet per minute if at least 9,000 cubic feet of air per minute is being delivered to the intake end of the pillar line.
B. The air current at a working face shall, under all conditions, have a sufficient volume and velocity to readily dilute and carry away smoke from blasting and any flammable or harmful gases and dust.
1. The quantity of air shall be at least 30,000 cubic feet per minute reaching the working face, unless otherwise approved by the Chief; and
2. The velocity of air provided to control dust at designated locations on the longwall or shortwall face shall be maintained in accordance with the provisions of the mine ventilation plan approved by MSHA.
D. Ventilation shall be maintained during the installation or removal of mechanized mining equipment.
History
The record of this law’s original creation isn’t available online. It has been modified 13 times. Those modifications are cataloged by “The Acts of Assembly,” a state publication, by year and chapter. Those modifications that can be read on the General Assembly’s website will be linked accordingly. Those modifications are as follows: in 1954, chapter 191; in 1966, chapter 594; in 1968, chapter 310; in 1976, chapter 598; in 1978, chapter 120; in 1984, chapter 236; in 1985, chapter 448; in 1987, chapter 470; in 1990, chapter 963; in 1993, chapter 442; in 1994, chapter 28; in 1996, chapter 774; in 2005, chapter 3.
Code 1950, §§ 45-4.1, 45-9, 45-12, 45-60.4, 45-74; 1954, c. 191; 1966, c. 594, §§ 45.1-5, 45.1-56; 1968, c. 310; 1976, c. 598; 1978, c. 120; 1984, c. 236; 1985, c. 448; 1987, c. 470; 1990, c. 963; 1993, c. 442; 1994, c. 28, § 45.1-161.219; 1996, c. 774; 2005, c. 3; 2021, Sp. Sess. I, c. 387.