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Showing: 1 to 10 of 2960 matches for "hard rock longwall"  Page   1   2   3   4   5   6   7   8   9  next TITLE Underhand Cut and Fill Mining as Practiced in Three Deep Hard Rock Mines in the United States  SUMMARY ... mining in the 1980s made hard-rock mining in ... Rock mechanics investigations at the Lucky Friday Mine ... instrumentation of an experimental underhand longwall stope. ... AUTHOR Williams, Ted J. ; Brady, Tom M. ; Bayer, Doug C. ; Bren, Mark J. ; Pakalnis, Rimas T. ; Marjerison, John A. ; Langston, Rad B. TITLE The Gradual Evolution Of Mechanized Hard Rock Mining  SUMMARY ... The drum cutting concept could very well lend itself to a longwall system of mining a flat lying hard rock deposit or a machine that could mine steep veins ... AUTHOR Bullock, R. L. PUBLISHED 1995 TITLE Wedge Longwall Cutterhead Development - Phase I ? Executive Summary  SUMMARY ... The RAPIDEX hard rock longwall cutterhead is a simple device , using toothed roller cutters arranged in a wedge-like configuration ... AUTHOR Peterson, Carl. R. PUBLISHED 1974 TITLE Shear Mechanism For Mining-Induced Fractures Applied To Rock Mechanics Of Coal Mines  SUMMARY ... Figure 8. Mining-induced fractures parallel to the face in longwall mines. A, Hard-rock mine, vertical vein (photo rotated 90° to approximate geometry of flat ... AUTHOR White, Brian G. TITLE Dust Control On Longwall Shearers Using Water-Jet-Assisted Cutting  SUMMARY ... R RAM-i dust monifor FIGURE 4. - Locations of sampl ing instruments on longwall shearer. ... by the wa- ter jets enabled the roadheader to cut hard rock that could ... AUTHOR Taylor, C. D. PUBLISHED 1986 TITLE Longwall Mining In America  SUMMARY ... 4, 5, 6) for the production of hard coal and ... One of the weakest points of U. S. longwall installations is ... recirculat- ed and lumps of coal or rock cause block ... AUTHOR Kuti, Joseph PUBLISHED 1978 TITLE Innovative Mechanical Excavation Mining Systems  SUMMARY ... Page 2. 1 Abstract. Innovative hard rock narrow-vein, longwall, and stope leach mining systems concepts are described and evaluated economically. ... AUTHOR Lombardi, J.A. PUBLISHED 1994 TITLE Use of Contractors for Mining Operations  SUMMARY ... mining is an integral part ofthe underground and surface hard rock mining industry ... Longwall moves, conveyor installations and maintenance are now the domain of ... PUBLISHED 1998 TITLE Control of Hard-to-Collapse Massive Roofs in Longwall Faces Using a Hydraulic Fracturing Technique  SUMMARY ... roofs in longwall panels, a new hydraulic fracturing technique for rock loosening is proposed and the characteristics of the strength deterioration of hard and ... AUTHOR Shimando, Hideki PUBLISHED 1998 TITLE SDPS For Windows: An Integrated Approach To Ground Deformation Prediction  SUMMARY ... of the maximum subsidence tictor with the width- tc-depth ratio of a panel and the percent hard rock (%HR) in the CASE HISTORY - LONGWALL MINING BENEATH A ... AUTHOR Newman, David PUBLISHED 2001 Showing: 1 to 10 of 2960 matches for "hard rock longwall"  Page   1   2   3   4   5   6   7   8   9  next Search Again