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Showing: 1 to 10 of 104 matches for "Jackleg mining cost"  Page   1   2   3   4   5   6   7   8   9  next TITLE Cost Calculations for Timbered Stoping  SUMMARY ... 'Metric equivalent: 1 fi x 0.3048 = rn The total mining cost, based on these assumptions, consists of two parts: development costs and stoping costs. ... AUTHOR Pugh, Gordon M. ; Rasmussen, David G. PUBLISHED 1982 TITLE Mining Methods  SUMMARY ... superintendent, after describing briefly the mining methods used ... 9-Less cost for racking tungsten carbide bits ... Jackleg-mounted drills also are being used experi ... AUTHOR Johnson, C. H. PUBLISHED 1953 TITLE Cost Calculations for Underhand Cut-and-Fill Mining  SUMMARY ... UNDERGROUND MINING METHODS HANDBOOK ... Cut-and-Fill, Wall Rockbolted, Cemented Unit Cost, Sand Fill ... Drill and blast Underhand breast, 10-ft vein 58.1 st jackleg ... AUTHOR Pugh, Gordon M. ; Rasmussen, David G. PUBLISHED 1982 TITLE Cost Calculations for Mechanized Shrinkage Stoping*  SUMMARY ... Round drilled with jackleg, using 1%-in.' bit, 6 ft advanced per ... Cost per st of ore total cost per raise round $ per st ... UNDERGROUND MINING METHODS HANDBOOK ... AUTHOR Pugh, Gordon M. ; Rasmussen, David G. PUBLISHED 1982 TITLE Cost Calculation for Horizontal Cut-and-Fill Mining  SUMMARY ... costs include 93.2 st jackleg 1.38 - - - - - 1.38 1.38 maintenance parts and la- bor, tires, and Mucking ... The total mining cost, based on the foregoing as- ... AUTHOR Pugh, Gordon M. ; Rasmussen, David G. PUBLISHED 1982 TITLE Metal Mining Sees Transition to:  SUMMARY ... for a stope of 60 to 80,000 tons the method might show a cost lower than ... The mining plan for the conveyor system calls for an ultimate length of four miles for ... PUBLISHED 1951 TITLE Macassa Number Three Shaft Deep Shaft Sinking By Conventional Methods  SUMMARY ... which con- stituted 66% of the total cost in 1981 ... ing plans- indi- mining operation, new mining m (6,450 ... and ground support is installed with hand held jackleg ... AUTHOR Dengler, W. R. ; Shaver, W. M. ; Edwards, F. A. PUBLISHED 1985 TITLE Mechanized Cut-And-Fill Mining As Applied At The Homestake Mine  SUMMARY ... ton of ore a, Locaton cost per foot ... ofbolting isaccomplishedwith pneumatic harid-held jackleg drills. ... to minimize haulage distances as mining horizons advance ... AUTHOR Pfarr, J. D. PUBLISHED 1992 TITLE Jackleg Drilling in the Tri-State District: Longhole Prospecting and Production  SUMMARY ... work now done with the jackleg. This would result in a much higher cost than is the case now. Acknowledgment Thanks are due to the officers of the Mining & ... AUTHOR Clarke, S. S. ; Brockie, Douglas C. PUBLISHED 1956 TITLE Evaluation Of The Potential Of Mining With Water-Powered Jackleg Drills  SUMMARY ... the use of pneumatic equipment such as jackleg drills. ... for the purpose of deep-level mining has its ... high production cost - about $25 (Canadian) per South Africa ... AUTHOR Paraszczak, J. ; Planeta, S. PUBLISHED 1997 Showing: 1 to 10 of 104 matches for "Jackleg mining cost"  Page   1   2   3   4   5   6   7   8   9  next Search Again