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Showing: 1 to 10 of 106 matches for "jackleg drill operation"  Page   1   2   3   4   5   6   7   8   9  next TITLE Quantitative Vibration Evaluation Of Modified Rock Drill Handles  SUMMARY ... steel handle, which is fixed, with control of the jackleg pressure achieved ... level of acceleration measured at the hand-handle interface during drill operation. ... AUTHOR De Souza, E. M. ; Moore, T. N. PUBLISHED 1992 TITLE Comparative Testing Of Water-Powered - And Pneumatic Jackleg Rock Drills  SUMMARY ... Drilling is a crucial operation in hard rock ... of powerful hydraulic drifters and drill jumbos, a ... mining is still performed with the pneumatic jackleg drill. ... AUTHOR Paraszczak, J. ; Planeta, S. ; Ouellet, H. PUBLISHED 1995 TITLE Field Performance Evaluation Of A Rock Drill Handle Design  SUMMARY ... for a jackleg rock drill, developed by the authors (1991), was used to quantify the hand-transmitted vibration levels produced during typical operation of Joy ... AUTHOR De Souza, E. M. ; Moore, T. N. PUBLISHED 1994 TITLE Grade Control at the Highland Underground Uranium Mine  SUMMARY ... Jackleg drill hole fans are drilled In the ribs of development ... Drill hole fan cross sections can be plotted with ... depends on the surface mine operation, the ore ... AUTHOR Perry, Harry A. PUBLISHED 1980 TITLE Jackleg Drilling in the Tri-State District: Longhole Prospecting and Production  SUMMARY ... in one type, more efficient and eco- nomical operation would result. ... Drill steel cost ---- $0.031 per ton or $0.048 per ft -- - Jackleg drill labor cost ... AUTHOR Clarke, S. S. ; Brockie, Douglas C. PUBLISHED 1956 TITLE Evaluation Of The Potential Of Mining With Water-Powered Jackleg Drills  SUMMARY ... the overall capital and operation costs may be substantially higher than for conventional ... the price of a water-powered jackleg drill is about twice that of a ... AUTHOR Paraszczak, J. ; Planeta, S. PUBLISHED 1997 TITLE Vertical Crater Retreat Stoping as Applied at the Homestake Mine  SUMMARY ... DESIGN AND OPERATION OF CAVING AND SUBLEVEL STOPING MINES ... These holes were drilled with an Ingersoll-Rand JR-300 jackleg drill and were subsequently measured ... AUTHOR Mitchell, Steven T. PUBLISHED 1981 TITLE Virtual Reality In Mine Training  SUMMARY ... to see the virtual environment while learning to operate a jackleg drill. ... and potential consequences of missing hazards during inspections and operation. ... AUTHOR Mallett, L. ; Unger, R. PUBLISHED 2007 TITLE Metal Mining Sees Transition to:  SUMMARY ... Joy shuttle cars. A 43-in. high Jeffrey shuttle car was put into operation in 1950. ... The mining operation, as described At the new Round Mountain Dredging Corp. ... PUBLISHED 1951 TITLE Water Jet Uses In Sandstone Excavation  SUMMARY ... SEE FIGURE 5 The low 88 dBa noise levelof the drill made it possible for the workmen to communicate easily during periods of drill operation. ... AUTHOR Zink, Edwin A. ; Zink, Gerald P. ; Wolgamott, John E. ; Robertson, John W. PUBLISHED 1983 Showing: 1 to 10 of 106 matches for "jackleg drill operation"  Page   1   2   3   4   5   6   7   8   9  next Search Again