A. Every shaft, and every partition therein, shall be as nearly fireproof as is practicable.
B. Where there is danger of fire entering the mine, every opening shall have adequate protection against a surface fire or a hazardous volume of smoke entering the mine.
Code 1950, § 45-71.1; 1954, c. 191; 1966, c. 594, § 45.1-95; 1984, c. 228; 1985, c. 395; 1990, c. 372; 1992, c. 360; 1994, c. 28, § 45.1-161.169; 1996, c. 774; 2021, Sp. Sess. I, c. 387.