34 Pa. Code § 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.
Notes
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.