The provisions of 30 CFR 77.1909 (relating to explosives and blasting; use of permissible explosives and shot-firing units) are incorporated by reference.
25 Pa. Code § 208.404
The provisions of this §208.404 issued under sections 106 and 106.1 of the Bituminous Coal Mine Safety Act (52 P.S. §§ 690-106 and 690-106.1).