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Showing: 1 to 10 of 110 matches for "jack legs"  Page   1   2   3   4   5   6   7   8   9  next TITLE Sublevel Stoping at Tochibora Mine  SUMMARY ... Formerly undercutting was carried out above the drawing drift by jack-legs and small scrapers and then several cone-shaped glory holes were made by stopers ... AUTHOR Takata, Hisaaki ; Nanko, Nobukazu ; Izawa, Ichiro PUBLISHED 1981 TITLE Climax Panel Caving and Extraction System  SUMMARY ... drilling 38-mm (1%-in.) holes. A special rockbolting jumbo will soon replace the jack- legs. While expansion-type anchor bolts are ... AUTHOR Gould, John C. PUBLISHED 1982 TITLE Land Shaft Construction And Initial Station Development For Seabrook Station Cooling Water Tunnels  SUMMARY ... Initially, blast hole drilling was done with a two-boom Joy air track Model ACM II Drillmobile and Gardner–Denver jack legs and mucking started with one Cat ... AUTHOR Hulshizer, Allen J. ; Stuart, Jack C. ; Obradovic, Robert L. ; Stewart, Anthony J. PUBLISHED 1979 TITLE Mining - The Wire Saw in Quarrying Dimension Stone (Mining Tech. Jan. 1946, T.P. I949)  SUMMARY ... helix of those diameters, made to with suitable tightening devices, or with form an endless belt of any length up to two guys and two jack legs for supporting ... AUTHOR Vitry, P. De ; Mould, Willis P. PUBLISHED 1948 TITLE The Wire Saw In Quarrying Dimension Stone  SUMMARY ... a guy plate or collar with shackles attaching four chain or wire-rope guys with suitable tightening devices, or with two guys and two jack legs for supporting ... AUTHOR de Vitry, P. ; Mould, Willis P. PUBLISHED 1946 TITLE Construction Procedures And Equipment For Drop Shafts Metropolitan Sanitary District Of Greater Chicago  SUMMARY Page 1. Chapter 60 CONSTRUCTION PROCEDURES AND EQUIPMENT FOR DROP SHAFTS METROPOLITAN SANITARY DISTRICT OF GREATER CHICAGO by John ... AUTHOR DiPonio, John ; Lynch, Joseph PUBLISHED 1997 TITLE Construction Of The Pacheco Pumping Chamber And Shafts  SUMMARY Page 1. Chapter 40 CONSTRUCTION OFTHE PACHECO PUMPIN by Russell Clough Russell G. Clough Co. Danville, CA The Pacheco Pumping Plant ... AUTHOR Clough, Russell PUBLISHED 1985 TITLE Niagara Falls Water Intake Tunnel City of Niagara Falls, New York  SUMMARY ... MINING AND INITIAL GROUND SUPPORT All drilling except for the relief holes were accomplished using pneumatic hand drills mounted on jack legs. ... AUTHOR Wiggins, C. A. PUBLISHED 1997 TITLE New Mining Methods Tested by Menominee Range lron Ore Producers  SUMMARY ... It has replaced, to a small extent for specific operations, the hand-held drill on jack legs and the post-mounted drifting drill. ... AUTHOR Pearson, Philip D. PUBLISHED 1951 TITLE Construction Of Longueuil "Centre" 4.0 M Diameter Interceptor In The Montreal Area  SUMMARY ... Construction of the required 128 m of tunnel to accommodate the butterhead and back-up equipment of the TBM was started using jack-legs for conventional drill ... AUTHOR Wagner, John R., Mr. ; Scarabelli, Rudy, Mr. PUBLISHED 1987 Showing: 1 to 10 of 110 matches for "jack legs"  Page   1   2   3   4   5   6   7   8   9  next Search Again