Part 9 - TUNNEL AND MINE SAFETYBrowse as ListSearch WithinChapter 1 - TUNNELS AND MINES (§§ 7950 — 7964.5)Chapter 2 - GASSY AND EXTRAHAZARDOUS TUNNELS (§§ 7965 — 7985)Chapter 3 - LICENSING AND PENALTIES (§§ 7990 — 8004)