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blasting pattern in opencast mining in nepal

blasting pattern in opencast mining in nepal

blasting pattern in opencast mining 6 Use of suitable delay and burden for heavy blasting to reduce impulse noise Vibration due to Blasting Less than 25 per cent of the explosive energy was utilised in rock breaking during opencast mining while the rest was converted into shock waves traveling through air or ground causing noise flying of rocks or vibration of ground structures Open cast

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