30 C.F.R. § 57.6903 Burning explosive material.
Title 30 - Mineral Resources
If explosive material is suspected of burning at the blast site, persons shall be evacuated from the endangered area and shall not return for at least one hour after the burning or suspected burning has stopped.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart E—Explosives
General Requirements—Surface and Underground
§ 57.6903 Burning explosive material.