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New York Precious Metals - Manufacture of Sterling Silver and Some of Its Physical Properties (with Discussion)
By Robert H. Leach, C. H. Chatfield
This paper gives a brief summary of the process of manufacture of sterling silver, and some of its more important physical properties, as observed in conlmercial production of rolled sheet and wire. A
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RI 4882 Volumetric Determination of Small Quantities of Uranium - With Special Reference to Errors Associated with Use of Jones Reductor (2b4914c2-e697-47ab-9da8-dccd8a6cadf8)
By Heber E. Peterson, Sill. Claude W.
"INTRODUCTION In the usual volumetric determination of uranium, the solution containing uranium is reduced in a Jones reductor, yielding a mixture of trivalent and tetravalent uranium; the trivalent u
Jun 1, 1952
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Nanoparticle Flotation Collectors for Pentlandite (b0296758-fb13-46f0-8d38-39e30070d6bb)
By R. Pelton, Z. Dai, S. Yang
ABSTRACT Hydrophobic polystyrene nanoparticles were evaluated as potential flotation collectors for pentlandite. The flotation of hydrophilic glass beads demonstrated the nanoparticles’ ability to ind
Jan 1, 2014
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Influence de l’ion ferreux et du métabisulfite de sodium sur la lixiviation acide des minerais oxydés cupro-cobaltifères
By S. Y. Tshipeng, A. T. Kaniki
"RÉSUMÉ La lixiviation acide d’un minerai oxydé cupro-cobaltifère en milieu non réducteur et en milieu réducteur en utilisant le Fe2+ et le métabisulfite de sodium (SMBS) a été étudiée et les résultat
Jan 1, 2018
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Selective Water Leaching of Sulfated Rare Earth Ore and Impurity Removal from a Rare Earth Sulfuric Liquor Mining, Metallurgy and Exploration
By Éder Domingos Oliveira, Carlos Antonio Morais, Ruberlan Gomes Silva
The objective of this work was to assess the influence of parameters such as residence time, solid content, and temperature in a process route towards purified rare earth liquor which could be adequat
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Moving Beyond Economic Framing of the Australian Coal Industry
By S Worden, P A. Kirsch, A Kirsch
Despite the current downturn, coal remains an important commodity in the Australian economy. Increasing coal resource development has resulted in increasing competition for land use in coal mining reg
Jul 16, 2014
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Mining, Capacity-Building and Social License: Making the Links
This paper aims to increase our understanding about existing capacity-building approaches and their implications for obtaining a social license to operate in the mining industry. The notion of ?capaci
Aug 1, 2013
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RI 5597 Studies Of Several Flocculants To Improve Hydraulic Backfill Characteristics ? Introduction
By John D. Bardill
A cooperative project between the Bureau of Mines, Department of the Interior, and the Montana School of Mines, investigating results of hydraulic systems for transporting sand slurries for emplacemen
Jan 1, 1960
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Part II – February 1969 - Communication - Nickel Activity Data in the Nickel-Aluminum System at 1000°C
By A. U. Seybolt, R. E. Honnemon
THE purpose of this communication is to present activity data of nickel in the Ni-A1 binary system that was obtained for oxidation studies in this system. This data has been calculated from previous
Jan 1, 1970
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Statistical Analysis Of Sand And Gravel Aggregate Deposit's Of Late Pleistocene Lake Bonneville, Utah
By James D. Bliss
Sedimentary deposits of pluvial Lake Bonneville are an important source of sand and gravel suitable for aggregate and construction in Utah. Data on Lake Bonneville basin sand and gravel deposit thickn
Jan 1, 2001
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IC 7130 Testing Respiratory Protective Equipment For Approval ? Introduction
By H. H. Schrenk
The purpose of respiratory protective equipment is to prevent the inhalation of harmful or objectionable atmospheres. Although constituents or contaminants that may render an atmosphere irrespirable o
Jan 1, 1940
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Paragénesis y distribución de minerales y metales en la veta principal de San Cristóbal
By C. M. Wright
Siendo la veta principal San Cristóbal, una de las estructuras que atraviesan el Anticlinal Chumpe en la provincia de Yauli, su explotación ha sido limitada a las rocas volcánicas y filitas en el flan
Aug 20, 1963
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Laboratory Studies in the Search for Minerals
The usefulness of laboratory studies - petrology and mineragraphy in the search for, and investigation of, mineral deposits should not be exaggerated, but it should not be overlooked, because such stu
Jan 1, 1950
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Improvement of the Cobalt Process at the Chemicals of Africa (Chemaf) Usoke Plant – Effect of Seed Recycle
By Jo Katembo, Patty Bwando, Patient K. Ilunga, Yves Kalubi, Emman Mulaj
"From 2010, the dolomite concentration in the ore fed to the Usoke Plant increased, resulting in a significant increase in the gangue acid consumption and Mg build-up in the circuit, and thus an incre
Jan 1, 2015
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Coal Mining In Europe - A Study Of Practices In Different Coal Formations And Under Various Economic And Regulatory Conditions Compared With Those In The United States ? Introduction
By George S. Rice
The major purpose of this bulletin, as indicated in the preface by Dr. John W. Finch, Director of the Bureau of Mines, is to give a critical review of the coal-mining methods used in the principal pro
Jan 1, 1939
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A Preliminary Study into the Relationship between Air Overpressure and Face Velocity in quarry Blasting
By W. J. Birch, R. Farnfield, L. Bermingham
Whilst a significant body of research has been carried into air overpressure levels that arise as a result of the use of explosives, few published studies have actually tried to relate the movement of
Jan 1, 2008
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The Washability of Australian Coals
Australian coals tend to be young in geological age and high in ash by world standards; preparation of the coal before marketing is almost universal. On the basis of float and sink data from 39 locati
Jan 1, 1979
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Distribution of Hard Hematite Ore at the Quadilßtero Ferrffero, Minas Gerais, Brazil and its Possible Genetic Significance
The hematite deposits of Quadrilßtero Ferrffero (QF) are hosted by the Proterozoic itabirites of the Itabira iron formation (Harder and Chamberlin, 1915). These deposits are widely distributed at QF a
Jan 1, 2002
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Metamorphism of the Itabira Iron Formation and Haematite Generation at the Quadrilßtero Ferrffero, Minas Gerais, Brazil
By D M. Aranha, M A. Fonseca, M Echtern
The regional syndeformational metamorphism affecting the Itabira Iron Formation (IIF) at Quadrilßtero Ferrffero (QF) was formerly discussed by Dorr (1965), who proposed that quartz grain size could mo
Jan 1, 2007
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Mine Exploitation
By Scott G. Britton
Mine exploitation is a broad subject whose focus is the technical skills or efforts needed for the extraction of mineral from a known ore body. Mine exploitation can be considered the very core of the
Jan 1, 2008