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Showing: 1 to 10 of 108 matches for "jackleg operation"  Page   1   2   3   4   5   6   7   8   9  next TITLE Comparative Testing Of Water-Powered - And Pneumatic Jackleg Rock Drills  SUMMARY ... Drilling is a crucial operation in hard rock mining ... for a variety of reasons, drilling in narrow-vein mining is still performed with the pneumatic jackleg drill ... AUTHOR Paraszczak, J. ; Planeta, S. ; Ouellet, H. PUBLISHED 1995 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 Longwall Mining in Hardrock – Experience at San Francisco Manganese Ore Mine  SUMMARY ... other methods of longwalling, the writer and a member of Compania Minera Autlan visited an operation in Canada where a method called jackleg longwall stoping ... AUTHOR Lipensky, Milan PUBLISHED 1964 TITLE Dexing Copper Project is Porphyry Bonanza  SUMMARY ... elude the existing operation, accord- ing to Dexing engineers. ... Below, a Chinese miner tackles the uni- versal problem of hard toes in the pit with a jackleg. ... PUBLISHED 1980 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 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 air jackleg drilling. Pur- chase price is another important factor. ... AUTHOR Paraszczak, J. ; Planeta, S. PUBLISHED 1997 TITLE Jackleg Drilling in the Tri-State District: Longhole Prospecting and Production  SUMMARY ... all be incorporated in one type, more efficient and eco- nomical operation would result ... steel cost ---- $0.031 per ton or $0.048 per ft -- - Jackleg drill labor ... AUTHOR Clarke, S. S. ; Brockie, Douglas C. PUBLISHED 1956 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 Grade Control at the Highland Underground Uranium Mine  SUMMARY ... at the face is probably the most important step in maintaining a smooth operation. ... used to probe muckplfes, bolt holes, up and down holes and jackleg fans, and ... AUTHOR Perry, Harry A. PUBLISHED 1980 TITLE Method Selection At Questa  SUMMARY ... Boom Rail Pneumatic Jumbos 2-Boom Ring Drill Jumbos Rock Bolting Jumbo Jackleg Drills Stoper ... air to service the 16.5 kt per &y gravity block caving operation. ... AUTHOR Shoemaker, D. R. PUBLISHED 1981 Showing: 1 to 10 of 108 matches for "jackleg operation"  Page   1   2   3   4   5   6   7   8   9  next Search Again