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Keywords: blasthole
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Proceedings Papers

Paper presented at the ISRM SINOROCK 2013, June 18–20, 2013
Paper Number: ISRM-SINOROCK-2013-130
... indicates that when a free surface is 8.9 m far from the nearest charge position, the surface is still seriously destroyed, even though it is a decoupled charge. In full charged blastholes, as the free surface is 20 m away from the nearest charge, the spalling is also marked. However, as the delay time...

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