Pennsylvania Code
Pennsylvania Code & Bulletin
COMMONWEALTH OF PENNSYLVANIA

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The Pennsylvania Code website reflects the Pennsylvania Code changes effective through 54 Pa.B. 488 (January 27, 2024).

34 Pa. Code § 43.40. Ventilation.

§ 43.40. Ventilation.

 The constructor of every shaft or tunnel shall provide and maintain a ventilating system with a capacity of at least 75 cubic feet per man per minute or, if horses and mules are used, at least 175 cubic feet per horse or mule per minute. The ventilating system, immediately after blasting has occurred, shall be capable of removing 4,000 cubic feet per minute and entirely removing the contaminated air in 15 minutes.


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