The provisions of 30 CFR 77.1904 (relating to communications between slope and shaft bottoms and hoist operators) are incorporated by reference.
25 Pa. Code § 208.398
The provisions of this §208.398 issued under sections 106 and 106.1 of the Bituminous Coal Mine Safety Act (52 P.S. §§ 690-106 and 690-106.1).