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Showing: 1 to 10 of 1660 matches for "gabbro mining"  Page   1   2   3   4   5   6   7   8   9  next TITLE Oklahoma and Wyoming Anorthosite: Potential Domestic Sources of Alumina  SUMMARY ... ANORTHOSI T I C ANORTHOS lTE OLlVlNE GABBRO GABBRO (LOWER ZONE) (MIDDLE ZONE) (UPPER ... Sherman granite that could be anticipated in a large scale mining operation ... AUTHOR Grubbs, D. K. ; Moose, A. B. PUBLISHED 1982 TITLE Use Of Ozone In The Differential Flotation Of Bulk Copper-Nickel Sulfide Concentrates  SUMMARY ... a frother. Since the potential mining and mflling of Duluth gabbro would take place in an envimnmentally sensitive area. it was ... AUTHOR Iwasaki, I. ; Malicsi, A. S. PUBLISHED 1986 TITLE Drilling Innovations Benefit Quarry Operator  SUMMARY ... Table 11. Performonce of Converted QM-2 Drill to DHD Operation (Gabbro) Bit Diam, in. ... Five-inch 34-MINING ENGINEERING, JANUARY 1963 SOCIETY OF Page 2. ... AUTHOR Parton, W. Julian PUBLISHED 1963 TITLE Metallurgy At National Lead Company, MacIntyre Development  SUMMARY ... 1948, by the American Institute of Mining and Metallurgical Engineers. Inc. ... New York, on the headwaters of the Hud- The gabbro waste is generally finer grained ... AUTHOR Milliken, Frank R. PUBLISHED 1947 TITLE Concentration - Mill Flowsheets and Practices - Metallurgy at National Lead Company, MacIntyre Development (Mining Tech., May 1948, TP 2355, with discussion)  SUMMARY ... The gabbro waste is generally finer grained, and contains, in addition to feldspar, 35 to - 47 35 40 40 25 37 ... 24, 1947. Issued as TP 2355 in MINING TECHNOLOGY. ... AUTHOR Milliken, Frank R. PUBLISHED 1949 TITLE Discussion of Papers Published Prior to July 1962 - Magnetic Tactonites of the Eastern Mesabi District, Minnesota (AIME Transactions, 1961, vol. 220, p. 227)  SUMMARY ... that the taconite of the Eastern Mesabi was radically different from that of the Main range before the gabbro metamorphosed it? Society of Mining Engineers ... AUTHOR Gundersen, J. N. ; Schwartz, G. M. PUBLISHED 1962 TITLE Minnesota Granite Poses Tough Drilling Problem  SUMMARY ... ne of the operations of the J. L. Shiely Co. is quarrying in a hard granite gneiss with in- trusions of gabbro or trap. ... SEPTEMBER 1950. MINING ENGINEERING-941 AUTHOR Harrison, S. J. PUBLISHED 1950 TITLE Using Local Experience In Wholesale Gold Mining - Effect Of Choice Of Methods In The Alaska Juneau Mill  SUMMARY ... Page 7. EXPERIENCE IN WHOLESALE GOLD MINING 87 The resulting plus 12-in. slate, gabbro and greenstone was trammed in cars to a waste dump and the plus 12-in. ... AUTHOR Bradley, F. W. PUBLISHED 1932 TITLE Premier mine draw control and underground vehicle monitoring and control system  SUMMARY ... Premier Mine kimberlite pipe is unique in that it is intersected by a 75 m thick gabbro sill at a depth of 400 m below surface. The current mining method used ... AUTHOR Nesbitt, K. ; Voster, J. A. PUBLISHED 2001 TITLE The Search For Nickel - Increasing Demand For Nickel Has Stimulated An Exploration Boom That Girdles The Globe. – Australia  SUMMARY ... Occurrence of copper-nickel deposits in the Duluth Gabbro Complex, known since 1948, has ... Bureau of Mines, the US Geological Survey, Inc., Bear Creek Mining Co. ... PUBLISHED 1968 Showing: 1 to 10 of 1660 matches for "gabbro mining"  Page   1   2   3   4   5   6   7   8   9  next Search Again