30 C.F.R. § 75.1317 Primer cartridges.
Title 30 - Mineral Resources
(a) Primer cartridges shall be primed and loaded only by a qualified person or a person working in the presence of and under the direction of a qualified person. (b) Primer cartridges shall not be primed until immediately before loading boreholes. (c) Only a nonsparking punch shall be used when priming explosive cartridges. (d) Detonators shall be completely within and parallel to the length of the cartridge and shall be secured by half-hitching the leg wires around the cartridge or secured by an equally effective method.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart N—Explosives and Blasting
§ 75.1317 Primer cartridges.
