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Showing: 1 to 10 of 330 matches for "raise drill cutter change"  Page   1   2   3   4   5   6   7   8   9  next TITLE The Elements Of Raise Drilling  SUMMARY ... for reasonable site preparation costs and a raise which may be completed without cutter change. ... For this reason care and maintenance of the drill string is ... PUBLISHED 1977 TITLE Four Metre Diameter Raise Drilling at Olympic Dam Project S.A.  SUMMARY ... 3 - Oetails of raise drill pad ... Final positioning of the head under the drill string was carried out ... When the head was lowered on the final cutter change it was ... PUBLISHED 1988 TITLE Raise and Shaft Drilling, A Continuing Development  SUMMARY ... basic concepts and general arrangements have seen little change. ... made during this decade of raise-drill evolution, one ... Cutter cost per foot of bored raise has ... AUTHOR Robbins, Richard J. TITLE Cutter Rescue By Borehole - Disaster Avoided  SUMMARY ... diameter to accept the raise drill rods. ... 2) Damage to the raise bore machine and accessories resu[ting ... Cutter or reamer damage naa ... AUTHOR Downes, James E., P. E. ; Peregoy, John J. PUBLISHED 1989 TITLE Decline Development At The Lakeshore Property  SUMMARY ... was moved to the 4’ diameter service raise and this ... time spent on fishing of the drill string and ... the 4’ diameter shaft, only 1 cutter change was required ... AUTHOR Hendricks, Robert S. PUBLISHED 1997 TITLE The Economics of Mechanical Raise Boring  SUMMARY ... therefore reflect the high end ofthe cost scale for raise boring ... pilot bit cost (280-mm-diam) reamer cutter cost (1 .83-m-diam) Subtotal Drill maintenance and ... AUTHOR Norman, N. E. ; Dye, James H. PUBLISHED 1981 TITLE Raise Boring At The International Nickel Company Of Canada, Limited Ontario Division  SUMMARY ... The gauge cutter carbides were worn flush to the matrix during the 450 ... ventilation raise. ... leg of thk system is currently being bored with the RD7 drill to open ... AUTHOR Taylor, W.J. ; England, J.R. PUBLISHED 1974 TITLE Raise Drills  SUMMARY ... main types of cutters are used in raise drill- ing-disk ... for effective use of the disk cutter usually occurs ... 000 kPa (2250 to 2750 bars) throughout the raise. ... AUTHOR Home, Lok W. PUBLISHED 1982 TITLE Deep Hole Raise Boring At Falconbridge Operations, Sudbury Ontario  SUMMARY ... loads to estimate reaming performance, cutter life and cutter costs. In addition, a compilation of contractor owned raise borers and related drill pipe was ... AUTHOR Pugsley, Thomas F. ; Gallagher, James ; Davies, Wilf J. PUBLISHED 1989 TITLE Some Aspects Of The Art Of Raise Boring  SUMMARY ... Prior to such decisions as raise lengths and penetration rates ... rock to be bored are generally forwarded to the cutter suppliers for drill ability tests ... AUTHOR Harrison, G. P. ; Green, N. E. ; Bennett, W. E. PUBLISHED 1997 Showing: 1 to 10 of 330 matches for "raise drill cutter change"  Page   1   2   3   4   5   6   7   8   9  next Search Again