30 C.F.R. § 57.20031 Blasting underground in hazardous areas.
Title 30 - Mineral Resources
In underground areas where dangerous accumulations of water, gas, mud, or fire atmosphere could be encountered, persons shall be removed to safe places before blasting.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart S—Miscellaneous
§ 57.20031 Blasting underground in hazardous areas.

