30 C.F.R. § 57.6401 Shunting.
Title 30 - Mineral Resources
Except during testing— (a) Electric detonators shall be kept shunted until connected to the blasting line or wired into a blasting round; (b) Wired rounds shall be kept shunted until connected to the blasting line; and (c) Blasting lines shall be kept shunted until immediately before blasting.
Title 30: Mineral Resources
PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES
Subpart E—Explosives
Electric Blasting—Surface and Underground
§ 57.6401 Shunting.
