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Showing: 1 to 10 of 2020 matches for "large heading cost"  Page   1   2   3   4   5   6   7   8   9  next TITLE Bureau Of Mines Ripper Miner  SUMMARY ... large quantities of rock can be extracted at one time. When extracting rock from a small cross section, such as in driving a development heading, the cost per ... AUTHOR Morrell, R. J. PUBLISHED 1989 TITLE A Rock Excavation System Based On The Penetrating Cone Fracture Technology  SUMMARY ... However, the cost advantage ofPCF over conventional drill & blast is even higher ... designed for specific tasks, such as high speed, large heading excavation and ... AUTHOR Micke, B.P. PUBLISHED 1994 TITLE Better Face Ventilation For Mines With Large Entries ? Objective  SUMMARY ... oil-shale mine, based on results of a cost/benefit analysis. ... Jet fan at the mouth of a dead-ended large mine ... The mine face entry was a dead heading 55 feet wide ... PUBLISHED 1987 TITLE How to Manage Machine Duty to Sustain High Production Rates  SUMMARY ... While this is substantial, its importance is beyond its significance as a cost heading. Modern mining requires large amounts of investment in capital ... AUTHOR R McAree ; P Meehan ; Z Guan PUBLISHED 2002 TITLE Tunneling?Pipe Jacking of Large Diameter Pipes in O?Hare International Airport  SUMMARY ... has often been the most schedule and cost effi- cient ... of dewatered silt and sand and large diameter of ... pressure exerted to the heading to prevent ground heave ... AUTHOR Djavid, Mohammad PUBLISHED 2008 TITLE Productive And Cost Effective Drilling  SUMMARY ... will address the application of large rotary blasthole ... break: down - which will be cost prohibitive, but to ... of these elements under separate heading, but first ... AUTHOR Paterson, L. B. PUBLISHED 1999 TITLE Mining Methods and Costs at the Mount Isa Mines Ltd., Mount Isa, Queensland, Australia  SUMMARY ... by lack of water, the rigors of an arid tropical country, high cost of trucking 55 ... programme to test the continuation of ore at depth in the large low-grade ... AUTHOR Mann V I PUBLISHED 1938 TITLE Controlled Partial Recirculation in Mine Ventilation  SUMMARY ... This, together with the large amount of heat from machinery, usually means ... in Canadian mines in order to save on the cost of heating ... (b) Deve1opmell1 Heading ... PUBLISHED 1994 TITLE New Development of Cemented Fill in Various Chinese Metal Mines  SUMMARY ... is just mentioned above, ie underhand heading stoping with ... Currently, a large-scale research work is being undertaken ... high, and since the fill cost for low ... AUTHOR Chengpu Zhou ; Sijing Cai PUBLISHED 1998 TITLE The Effect Of Face Resistance On Airflow Characteristics Along A Twin Development Heading  SUMMARY ... This, again, reveals the large amount of leakage through the stoppings that arose from ... Figure 16 represents the cost of each heading condition normalized to ... AUTHOR Wallace, Keith G., Jr. PUBLISHED 1984 Showing: 1 to 10 of 2020 matches for "large heading cost"  Page   1   2   3   4   5   6   7   8   9  next Search Again