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Part VI – June 1969 - Communications - Crystal Structure Transformations in VPt Produced by Plastic Deformation at Room TemperatureBy R. M. Waterstrat
The phase VPt has been reported to have a crystal structure of the B19 (AuCd) type at low temperatures.''' A recent investigation3 has indicated that this phase forms by an ordering rea
Jan 1, 1970
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Coal - Design and Operation of Thickening Equipment for Closed-Water Circuits in Coal Preparation PlantsBy L. A. Dale, D. A. Dahlstrom
Closed-water circuits are justified today from two standpoints: economical operation and prevention of stream pollution. In today's modern preparation plant, it has been found very desirable to h
Jan 1, 1965
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Coal - Evaluation of Mine Drainage WaterBy S. A. Braley
DRAINAGE water from coal mines is probably the most serious water pollution problem today, varying in importance according to location of the mines and geological structure. Drainage may be either aci
Jan 1, 1958
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Heap Leaching Practice At The Carlin Gold Mining Co. , Carlin, Nev.By J. D. McBeth, G. M. Potter, Ramon Pizarro
Heap leaching is used by the Carlin Gold Mining Co., Carlin, Nev., to supplement conventional processing of gold ore by agitation-leaching and countercurrent decantation. Selected open-pit ore contain
Jan 1, 1974
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Institute of Metals Division - Transmission Quantitative MetallographyBy J. Nutting, J. W. Cahn
WITH the development of thin film techniques for the direct examination of metals in the electron microscope some new problems in quantitative metallography have become apparent. In order to obta
Jan 1, 1960
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Magnesium Alloys - Gain Refinement of a Carbothermic Magnesium Alloy by SuperheatingBy Ralph Hultgren, Bernard York, David W. Mitchell
It is a well-known fact that magnesium-alloy castings are apt to be coarse grained if the melt is not superheated several hundred degrees above the melting point before casting. (The casting temperatu
Jan 1, 1945
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Influence of Rock Fractures and Block Boundary Weakening on Cavability (a11048cc-6b9f-4e16-9d40-b77b82089e41)By M. A. Mahtab, J. D. Dixon
The results of a parametric study of the influence of natural features (stress field, rock strength, and strength and orientation of fractures) as well as the influence of induced features (undercut s
Jan 1, 1977
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Library (b488944a-2a45-4f6f-b634-7b95b4ad6f94)The Library of the above-named Societies is open from 9 A. M. to 10 P. M. except on holidays. It contains about 70,000 volumes and 90,000 pamphlets, including sets of technical periodicals and publica
Jan 4, 1919
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Magnetic Separation For Mesabi Magnetite TaconiteBy J. E. Forciea, O. E. Palasvirta, L. G. Hendrickson
All pilot and commercial plants working with Mesabi Range taconite employ wet magnetic separation. Progress is being made with a dry magnetic process,9-11 but this has not yet been applied to taconite
Jan 12, 1958
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Technical Notes - Phase Transformations in Titanium-Rich Alloys of Titanium and ManganeseBy B. F. Peters, J. Gordon Parr, E. R. Macgregor
A SERIES of seven hypoeutectoid alloys, up to 18.2 atomic pct Mn, was made by the levitation melting technique. The loss of weight on melting was considered to be entirely due to volatilization of
Jan 1, 1957
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Section Delegates Raise QuestionsBy AIME AIME
THE section delegates assembled Monday morning with the incoming president, W. H. Bassett, in the chair and F. W. Bradley as vice-chairman. The secretary called the roll and urged the delegates to bec
Jan 1, 1930
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Roanoke, Va. Paper - The Copper Deposits of the South MountainBy C. Hanford Henderson
The belt of copper-bearing rocks of the South Mountain has attracted Attention principally iii the townships of Hamilton Ban and Liberty in Adams County, Pennsylvania, and in the southeastern portion
Jan 1, 1884
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Metallurgical Flowsheet DevelopmentBy Harmel A. Dawson, Robert A. Wilson
First the basic steps to determine the values present and the minerals involved which are the basis for the metallurgical testing are presented in this paper. Next, choosing the process or processes i
Jan 1, 1978
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Effects Of Oxidation Of Coals On Their Flotation PropertiesBy Shiou-Chuan Sun
THE effects of oxidation on the flotation behavior of sulphide minerals have been extensively studied,1-3 but no similar study has been made of coals. Coals of bituminous and lower rank undergo atmosp
Jan 4, 1954
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Announcements.By AIME AIME
Award of a Gold Medal : to the Institute. The Jury of Awards of the Jamestown Ter-Centennial Exposition has conferred a gold medal, the highest distinction within its power,. on the American Institut
Jan 7, 1908
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DiatomiteBy Arthur B. Cummins, Henry Mulryan
DIATOMITE is a hydrous or opaline form of silica, commonly known as diatomaceous earth, diatomaceous silica or kieselguhr. The term "infusorial earth" has lost its original meaning and today is incorr
Jan 1, 1949
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Sampling And Estimating Cordilleran Silver-Lead Limestone Replacement DepositsBy Basil Prescott
A thorough knowledge of the peculiarities of this type of orebody is necessary in sampling these limestone replacement deposits. Oxidized ores are often overestimated because of error in determining s
Jan 3, 1924
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Geochemical Prospecting Methods Employed in Canada’s Glaciated Precambrian TerrainsBy John E. Riddell
This review is based on a questionnaire sent out in 1959 to 24 Canadian exploration companies, known to be active in the mineral exploration field, concerning their practice in the use of applied geo-
Jan 11, 1960
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The Drift Of Things (8aa7aff5-f216-44e7-8c90-ae26f72cbad9)By Edward H. Robie
MANY engineers currently are working harder than usual, in part because of the demands being made upon them for increased production in the war effort, and in part because engineers are in short suppl
Jan 1, 1952