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Showing: 1 to 10 of 103 matches for "Jack Leg Drill"  Page   1   2   3   4   5   6   7   8   9  next TITLE Interstate Route H-3 Alternative Dowel Testing Program  SUMMARY ... 125 DRILLING EQUIPMENT All holes were percussion drilled with a Gardner-Denver jack leg drill. The drill was driven by air pressure with a S83F hammer. ... AUTHOR Boyce, Glenn M. ; Abramson, Lee W. PUBLISHED 1991 TITLE Rapid Excavation - A Perpetual Goal  SUMMARY ... of jack-leg drills was accelerated when miners recog- nized that it was easier to complete drill rounds with the lightweight jack-leg drill than with ... AUTHOR Garfield, Lawrence A. PUBLISHED 1971 TITLE Field Performance Evaluation Of A Rock Drill Handle Design  SUMMARY ... A qualitative assessment of the cushioned handles by the drill operators indicated an ... The concept of the motorcycle grip to control the jack leg air pressure ... AUTHOR De Souza, E. M. ; Moore, T. N. PUBLISHED 1994 TITLE Performance of Grouting Programin Cambridge Argillite at Inter-Island Tunnel  SUMMARY ... The primary drilling equipment to advance individual grout holes included a jack leg. A single boom Atlas Copco drill jumbo (Figure 4) was also utilized for ... AUTHOR Page, Troy L. ; Crouthamel, David R. ; Fong, Francis L. PUBLISHED 1997 TITLE Metal Mining - Underground Mining Trends in the Great Swedish Export Iron Ore Mines  SUMMARY ... de- signed, in collaboration with Atlas-Diesel Co., the well-known air-leg or jack-leg in combination ... 4. This drill is typified by the Bux drill used in Kiruna ... AUTHOR Hjortzberg-Nordlund, Borje PUBLISHED 1953 TITLE Underground Mining Trends In The Great Swedish Export Iron Ore Mines  SUMMARY ... de- signed, in collaboration with Atlas-Diesel Co., the well-known air-leg or jack-leg in combination ... 4. This drill is typified by the Bux drill used in Kiruna ... AUTHOR Hjortzberg-Nordlund, Borje PUBLISHED 1952 TITLE Land Shaft Construction And Initial Station Development For Seabrook Station Cooling Water Tunnels  SUMMARY ... s large diameter, 20 feet, the crew could safely drill horizontally into ... bolts, resin encapsulated, was accomplished with Gardner-Denver S83F jack leg drills. ... AUTHOR Hulshizer, Allen J. ; Stuart, Jack C. ; Obradovic, Robert L. ; Stewart, Anthony J. PUBLISHED 1979 TITLE Performance Of Shotcrete Linings At The Climax Mine  SUMMARY ... Rock bolts are torqued either by hand to 350 foot-pounds or with a jack-leg drill capable of 70 to 90 foot-pounds. Cha.n-Link Fabric ... AUTHOR Towner, Robert K. ; Kendorski, Francis S. PUBLISHED 1974 TITLE Jackleg Drilling in the Tri-State District: Longhole Prospecting and Production  SUMMARY ... Repair parts costs are in favor of the jack- leg. On the other hand, were it not for the light portable one-man jackleg, the conventional drill mounted on ... AUTHOR Clarke, S. S. ; Brockie, Douglas C. PUBLISHED 1956 TITLE Exhibitors at Metal Mining Exposition  SUMMARY ... A large number of new products, such as rock drills, Carset jack- bits, lighter drill mountings, and an improved Jack- leg for mounting jackhammers. ... PUBLISHED 1950 Showing: 1 to 10 of 103 matches for "Jack Leg Drill"  Page   1   2   3   4   5   6   7   8   9  next Search Again