Mining Engineering > GATE 2017 > Blasting
The Absolute amount of energy and density of a booster and ANFO are given below. The Relative bulk strength of booster is
Correct : 113 to 116 or 1.13 to 1.16
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In an opencast coal mine, blast vibrations are measured at two locations, A and B simultaneously for a maximum charge per delay (Q) of 1200 kg as given.
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