MSHA - Code of Federal Regulations - 30 CFR 57.6400
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MSHA - Title 30 CFR
30 CFR § 57.6400
Compatibility of electric detonators.


ELECTRIC BLASTING--SURFACE AND UNDERGROUND

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


[58 FR 69596, Dec. 30, 1993]