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Showing: 1 to 10 of 4940 matches for "v cut drilling"  Page   1   2   3   4   5   6   7   8   9  next TITLE New Technology In Shaft Sinking The Craig Protect  SUMMARY ... The problems experienced in drilling a full face rourd is the limitation of utilizing a full face rourid with tie V cut. Traditionally ... AUTHOR Dengler, W. R. ; Shaver, W. M. ; Letourneau, R. PUBLISHED 1991 TITLE Dynatec International Limited Long Round Development  SUMMARY ... For the full face rounds, the V cut drilling pattern was considered undesirable since the muck would be thrown Upthe shaft during blasting which necessitates ... AUTHOR Dengler, W.R., D.Sc., P.Eng. ; Shaver, W.M., P.Eng. PUBLISHED 1993 TITLE Continuous Spiral Blast Tunneling  SUMMARY ... Typically, a 30 hole burn cut or V-cut round in the same size tunnel would ... can be concluded from this that the costs of consumables for drilling and blasting ... AUTHOR Peterson, Carl R. ; Herrick, John PUBLISHED 1974 TITLE Illinois Operations Of The Eagle Picher Mining And Smelting Co.  SUMMARY ... Diamond drilling did not prove satisfactory due mainly to difficulty in getting a good ... 7-ft holes drilled together at the bottom of the V. The V cut holes were ... AUTHOR Dale, C. O. ; Rundle, W. J. PUBLISHED 1952 TITLE Improvements On Blasting Technique For Headrace Tunnels  SUMMARY ... 01-02, v/J ... 2) Ohtsuka, M., and Ishida, Y., 1982, "Long round drilling by hydrau- lic rock ... 4) Ohtsuka, M., 1982, "Parallel cut blasting with advance of 3.9 m by ... AUTHOR Kanoh, Yoneji ; Ohtsuka, Masahiko PUBLISHED 1983 TITLE Driving A 540-Foot Raise At Nivloc, Nevada  SUMMARY ... The drilling and blasting were done by two miners working night shift. ... A standard V-cut round, comprising from Page 3. R. K. MATHESON 3 ... AUTHOR Matheson, R. K. PUBLISHED 1942 TITLE Tunnels And Shafts, Roosevelt Road To Ogden Avenue  SUMMARY ... Transformer stepping down to 48o V, 30, 60 cycles Maximum ... It appears the rock will cut well and penetration ... peak drilling rates of 5 feet per hour in the ... AUTHOR Martin, Thomas F. PUBLISHED 1979 TITLE Exploratory Shafts And Underground Test Facility For The Waste Isolation Pilot Plant (WIPP)  SUMMARY ... SHAFT DRILLING Both the 3.66 m (12 ft) drilled ... down-hole drilling method. Shaft drilling was performed with drilling equipment including ... AUTHOR Frobenius, Peter ; Chytrowski, Bolek ; Roberts, Dale ; Wu, Ching L. PUBLISHED 1983 TITLE Tunnelling With Hydraulic Drills At Aabjoera Hydro Electric Plant In Norway  SUMMARY ... A drum mounted on the rig, contains 125 m cable of 500 V, 3 x 75 Cu. ... 3 shows the pattern of drilling with parallel- hole cut and two large holes of 4 in. ... AUTHOR Thidemann, Alf ; Nilsen, Per Marius PUBLISHED 1979 TITLE Large Diameter Mine Shaft Construction Using A Rodless Boring Machine  SUMMARY ... Mole system of shaft drilling where the client has definite objections to conveying the material out of the mine. The rate at which the V-Mole can cut a shaft ... AUTHOR Raine, A. G. PUBLISHED 1984 Showing: 1 to 10 of 4940 matches for "v cut drilling"  Page   1   2   3   4   5   6   7   8   9  next Search Again