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Showing: 1 to 10 of 135 matches for "handheld rock drills"  Page   1   2   3   4   5   6   7   8   9  next TITLE Noise Test Report: Handheld Pneumatic Rotary Drill  SUMMARY ... strata. Its configuration is similar to that of the handheld stopers or jackleg drills common to American hard-rock mines. The drill ... AUTHOR Stein, Robert R. PUBLISHED 1989 TITLE The Loco Drill And Its Application To Flat End Development  SUMMARY ... The conventional method, as in the past, makes use of handheld pneumatic rock drills, while the mechanized method described in this paper utilizes a Loco Drill ... AUTHOR McKeown, B. ; Moxham, K. PUBLISHED 2006 TITLE Extensive Mechanization Produces Record Performance In Drill-Blast Tunnelling  SUMMARY ... An 8-ton locomotive plus a small train carrying a portable air compressor, a flatbed car with pneuatic handheld rock drills and tools. ... AUTHOR Hamrin, Hans PUBLISHED 1987 TITLE The Development And Implementation Of The Lonmin Mechanized Breast Mining  SUMMARY ... Drilling with pneumatic handheld rock drills and multiple changes of steel it takes 15 to 20 minutes to install a bolt ➤ Remote control to be studied/offered ... AUTHOR Pickering, R. G. B. PUBLISHED 2007 TITLE New Developments In Ground Support Technology For Open-Type Tunnel Boring Machines  SUMMARY ... bers typically used hand-held air drills, or stoper drills, to install rock bolts from ... 1 Historical TBM ground support methods using handheld air drills and ... AUTHOR Chorley, Steve PUBLISHED 2011 TITLE Measuring the Sound Power Level of Percussion Drills  SUMMARY ... 5. Handheld drill comparison ... ABSTRACT Occupational noise caused by the rock drills used in mining was investigated by the US Bureau of Mines. ... AUTHOR Stein, Robert R. PUBLISHED 2010 TITLE The Development And Implementation Of The Lonmin Mechanized Breast Mining  SUMMARY ... Install 15 to 20 bolts per shift. Drilling with pneumatic handheld rock drills and multiple changes of steel it takes 15 to 20 minutes to install a bolt. ... AUTHOR Pickering, R. G. B. ; Moxham, K. PUBLISHED 2006 TITLE Room and pillar mining in chrome and platinum mines  SUMMARY ... Roof support is done by means of systematic roof bolting. The operation is currently still done with handheld pneumatic rock drills. ... AUTHOR Lubbe, O. S. ; Annandale, G. ; van Wyk, J. W. PUBLISHED 2001 TITLE A Long Hole Stoping System For Mining Narrow Platinum Reefs - Introduction  SUMMARY ... Limited flexibility in terms of stope width has necessitated drilling by means of hand held, pneumatic rock drills at most of our operations. ... AUTHOR Dorssen, P. van PUBLISHED 2002 TITLE A comparison between hydraulic and pneumatic rockdrills  SUMMARY ... distinction between mounted drift- ers and handheld jackhammers ... If one were to re-introduce pneumatic rock- drills operating with the dense air system, academic ... AUTHOR Marshall, T. C. PUBLISHED 1974 Showing: 1 to 10 of 135 matches for "handheld rock drills"  Page   1   2   3   4   5   6   7   8   9  next Search Again