Electric Blasting—Surface and Underground | Midpage

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Code of Federal Regulations

ECFR3f4233ea5ae76e4

Electric Blasting—Surface and Underground

57.6400Compatibility of electric detonators.57.6401Shunting.57.6402Deenergized circuits near detonators.57.6403Branch circuits.57.6404Separation of blasting circuits from power source.57.6405Firing devices.57.6406Duration of current flow.57.6407Circuit testing.