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Keywords: drillhole
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Proceedings Papers

Paper presented at the ISRM International Symposium - Rockstore 80, June 23–27, 1980
Paper Number: ISRM-Rockstore-1980-028
...~rsson et al. cost OF CO~TROLL~D nLAstlNG In tunneling and gallery and bench blasting underground using moderate size drillhole diameters, con- siderable reductions in vibration levels can be obtained at little extra cost simply by increasing the number of intervals of the millisecond interval detonator...

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