Whenever an access shaft is used as the normal means of entrance or exit to an underground mine or tunnel, it shall be constructed of fireproof material or fireproofed by chemical or other means.
Cal. Lab. Code § 7964
Tunnels and Mines
Known as the The Tom Carrell Memorial Tunnel and Mine Safety Act
The act spans §§ 7950–8004 (52 sections).
Added by Stats. 1972, Ch. 1430.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.