The minimum quantity of air thus produced, shall not be less than two hundred cubic feet per minute for each and every person employed in any mine, and as much more as the circumstances may require.
52 P.S. § 70-504
The minimum quantity of air thus produced, shall not be less than two hundred cubic feet per minute for each and every person employed in any mine, and as much more as the circumstances may require.
52 P.S. § 70-504