C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH › PART 57—SAFETY AND HEALTH STANDARDS—UNDERGROUND METAL AND NONMETAL MINES › Subpart E—Explosives

30 C.F.R. § 57.6400

Compatibility of electric detonators

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All electric detonators to be fired in a round shall be from the same manufacturer and shall have similar electrical firing characteristics.