What is the first action a blaster-in-charge must take upon discovering a misfire (failed detonation) after a blast?
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A
Immediately drill into the misfired hole to investigate
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B
Wait the required waiting period (at least 30 minutes for electric, 1 hour for fuse), then approach cautiously following established misfire procedures
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C
Flood the blast area with water and walk away
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D
Contact the explosive manufacturer immediately before taking any other action