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Showing: 1 to 10 of 7240 matches for "underground & blasting"  Page   1   2   3   4   5   6   7   8   9  next TITLE Digital Blasting ù An Opportunity to Revolutionise Mass Underground Mining  SUMMARY ... SOME THEORY Effective underground blasting requires three basic elements as shown in Figure 1: • Free face - a surface for shock waves to reflect off which ... PUBLISHED 2000 TITLE A Study Of RF Hazards At Low And Medium Frequencies To Blasting In Underground Coal Mines  SUMMARY ... PAGE 1 1 LT)CI..rdaumma A STUDY OF RF HAZARDS AT LOW AND MEDIUM FREQUENCIES TO BLASTING IN UNDERGROUND COAL MINES Franklin ... AUTHOR Thompson, R. H. ; Stuart, J. G. ; Cipkins, A. W. PUBLISHED 1985 TITLE Environmental Problems In Underground Mines  SUMMARY ... been recognized. This problem is encountered underground while blasting and during operation of machinery. The increasing tempo ... AUTHOR Holtz, John C. PUBLISHED 1970 TITLE Mining - Mining Technology. The Outlook for the Future  SUMMARY ... Both surface and underground blasting techniques have recently been improved. Millisecond detonators now are largely used in opencut mines. ... AUTHOR Gardner, E. D. PUBLISHED 1956 TITLE Mining - Blasting Theories and Seismic Waves. Part 11: Seismic Wave from Plaster and Drillhole Explosive Charge  SUMMARY ... seismic wave is very im- portant in the evaluation of the blasting character- istics ... In underground mine blast- ing, the burdens are usually not greater than 6 ... AUTHOR Ruff, A. W. PUBLISHED 1961 TITLE The Changing Scene in Blasting  SUMMARY ... Today, slurry and prill agents are used in almost every surface and underground blasting operation, and account for about 90% of the exp!osive market. ... AUTHOR Akre, Robert L. PUBLISHED 1976 TITLE Low Voidage Blasting to Improve Underground Stope Productivity  SUMMARY ... PRODUCTIVITY IMPACT OF UNDERGROUND BLASTING When rock is broken in the blasting process the resulting fragmented rock expands in volume by over 20 per cent due ... PUBLISHED 2008 TITLE Metal Mining - Some Applications of Millisecond Delay Electric Blasting Caps  SUMMARY Page 1. Page 2. Page 3. AUTHOR McFarland, D. M. PUBLISHED 1951 TITLE Long-Hole Mining Methods - Changing Mining Methods at the Holden Mine  SUMMARY ... the buildings in camp are generally shaken considerably, there has been no report of any damage done on the surface as a result of powder blasting underground. ... AUTHOR Curzon, John J. PUBLISHED 1946 TITLE Analysis and Visualization of Drilling and Blasting Data with the Software "SURPAC"  SUMMARY ... Foundation for research promotion FFF). The aim of the project was to contribute to an improved blasting in underground drifts. ... AUTHOR Moser, P, ; Oberndorfer, T. ; Siefert, M. PUBLISHED 1996 Showing: 1 to 10 of 7240 matches for "underground & blasting"  Page   1   2   3   4   5   6   7   8   9  next Search Again