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Keywords: drain hole
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Proceedings Papers

Paper presented at the 51st U.S. Rock Mechanics/Geomechanics Symposium, June 25–28, 2017
Paper Number: ARMA-2017-0368
... Characterization drain hole shotcrete structural geology rock bolt weakness zone SBLW Pakistan strength rock support redesign rock slide divide pier contractor construction Upstream Oil & Gas discontinuity neelum jhelum hydroelectric project excavation reconstruction Engineering Team 1...
Proceedings Papers

Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0304
... location, through the evaluation of wall stability and mud requirements, to the shaft sinking contract and actual conditions encountered. INTRODUCTION Bougainville Copper Ltd. has constructed two drain holes at its open pit mine on Bougainville Island, Papua New Guinea. These holes connect a drainage...

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