34 Pa. Code § 43.84
Current through Register Vol. 54, No. 50, December 14, 2024
If, in the prosecution of caisson work in which compressed air is employed, the working chamber is less than 12 feet in length, and when the caissons are at any time suspended or hung while work is in progress so that the bottom of the excavation is more than 9 feet below the deck of the working chamber, a shield shall be erected there for the protection of workmen.
34 Pa. Code § 43.84