Scheduled Mines Blasting Certificate Exam Practice Questions - Scheduled Mines Blasting Certificate Of Competency Examination (South Africa) Exam

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What major advantage do programmable electronic detonators offer over conventional pyrotechnic delay detonators in hard-rock stoping and tunneling?

They eliminate the need for stemming material in blast holes They offer millisecond-accurate timing flexibility to optimize burden relief and reduce vibration They can detonate without requiring a booster or primer cartridge They are completely immune to water ingress and high hydrostatic pressures up to 100 bar

Correct Answer:

They offer millisecond-accurate timing flexibility to optimize burden relief and reduce vibration

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