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Finding Optimal Soil Restoration Strategies in the Face of Uncertain Future Rainfall AmountBy S Arnold
Properties of the soil profile fundamentally control water-limited ecosystems. Soil water availability affects vegetation dynamics of plant communities, but is also affected by these communities in re
Jul 10, 2012
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Application Of The Shrinking Core Model For Copper Oxide Leaching (SME-AIME Fall Meeting & Exibit St. Louis, Missouri, October 19-21, 1977 )By John L. Shafer
Often an in situ leach is the only practical economic method for copper recovery from small low grade oxide deposits. The decision to develop a copper property by an in-situ blast and leach is strongl
Jan 1, 1977
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The New Clean Air ActBy H. Barry Holt, Charles A. Bischoff
On November 15, 1990, President Bush signed the Clean Air Act Amendments of 1990. The new legislation is sweeping in its demands for cuts in smog, acid deposition, toxic air pollutants and ozone-deple
Jan 1, 1991
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In-Line Aeration And Treatment Of Acid Mine Drainage - ObjectiveReduce the costs associated with conventional treatment of acid mine water. Approach Conventional treatment of acid mine drainage consists of plants requiring large mixing and aeration tanks, m
Jan 1, 1985
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Reserve calculations, mining, and milling of Homestake Mining’s Open Cut project describedBy Jerry D. Pfarr, Gary Loving, David G. McDowall
Introduction The Open Cut is one of the best known landmarks in South Dakota's Black Hills. It is the site of the original discovery of the Homestake ledge, or lead, in 1876. Between that time a
Jan 10, 1987
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Proyecto minero Santas Gloria: yacimiento de plata en el distrito minero de Cocachacra. Geología, recursos y potencial exploratorioBy Alberto Martín Ríos Carranza
"El presente texto señala la información técnica del proyecto de Santa Gloria. Dicho plan revisa las estimaciones de reservas, recursos y potencial exploratorio, información metalúrgica, infraestructu
Nov 1, 2016
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The Mine Official as a TeacherBy E. A. Holbrook
IT may be taken for granted that a mine official knows his duties, as outlined by the bituminous mining laws of the State, he knows how coal should be mined and transported, and he has judgment on any
Jan 1, 1930
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Part II - Papers - Reduction of Zinc Oxide by Carbon Monoxide in the Presence of Strontium OxideBy H. M. Davis, T. S. Jones
A methodfor accelerating the reduction of a metal oxide by carbon monoxide is to incorporate in the reduction system a nonreducible oxide which has a strong affinity for carbon dioxide and will remove
Jan 1, 1968
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Dimensional Analysis for Predicting the Stresses in ForgingBy V. J. Ramirez, A. M. E. Noguez, M. J. Navarrete, B. G. Salas, N. T. Robert
"The close die forging stress in truncated conical cavities is evaluated with dimensional analysis. Five dimensionless groups are proposed from the process variables in order to simplify the forging s
Jan 1, 1997
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Silver solubility in sodum silicate slagsBy Xiao Min You, D. R. Swonbourne
Smelting of Cu anode slimes involves the use of a slag to hold the oxidised Cu, but some Ag is also inevitably oxidised to the slag. The solubility of Ag in sodium silicate slags at 1 100 and 1 150 de
Jun 21, 1905
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RI 5447 Analyses Of Some Crude Oils From Alaska ? Introduction And SummaryBy C. M. McKinney
This report contains Bureau of Mines routine crude-oil analyses of 20 samples from5 areas on the arctic slope of Alaska. Two samples were condensates from the South Barrow gasfield, Barrow Lakes area.
Jan 1, 1959
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The Basic Resource Equations (BRE And BR2RE)-A New Approach To The Definition And Reconciliation Of Mineral Resources And Reserves At Anglo American Platinum Ltd - SynopsisBy D. H. Diering
Definition of mineral resources and reserves forms the basis for effective mine planning and reliable public reporting of mineral assets. Historically, the mineral resource and reserves declaration pr
Jan 1, 2013
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Maori Economic Development Aspirations Where to from Here?Maori economic development still remains an enigma to many people some 157 years after the signing of the Treaty of Waitangi. It has only been in the last decade as a result of increasing pressures fr
Jan 1, 1997
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Metasomatic Norms and Mass Balance Chemico-mineralogic Models of HydrothermalAlteration SystemsBy Xiaolin Cheng, A. J. Sinclair
"Norm calculation procedures originally designed principally for igneous rocks are very rigid in their application and, in general, do not utilize important alteration minerals. For instance, volatile
Jan 1, 1995
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RI 9097 - Effects of Turbomilling Parameters on the Comminution of x-SiCBy Jesse L. Hoyer
A Bureau of Mines turbomill was evaluated for use in the production of high-purity, ultrafine x-Sic powders suitable for advanced ceramics that could substitute for high-temperature alloys containing
Jan 1, 1987
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International Overview of Seam Gas Emissions and Instantaneous OutburstsThe International Symposium-cum-Workshop on Management andControl of High Gas Emissions and Outbursts in Underground CoalMines was held in Wollongong in March 1995. Coverage of high gasemissions was v
Jan 1, 1997
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RI 7538 Creep And Other Properties Of Extruded Zinc-30 Percent Aluminum Alloys Containing MagnesiumBy L. A. Neumeier
The Bureau of Mines evaluated creep and other properties of extruded Zn-30 pct-AI alloys containing 0 to 0.7 pct Mg. The alloys were extruded both above and below the Zn-Al eutectoid temperature of 27
Jan 1, 1971
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New Technology of Oxygen Evolution Anodes for ElectrowinningBy Masatsugu Morimitsu
This paper introduces new technology of oxygen evolution anodes which can be applied to produce copper, zinc, cobalt, and other metals by electrowinning. The anode consists of nano iridium oxide parti
Jan 1, 2011
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Closing The Skill Gaps And Labor Shortages: A Priority For Mining Companies And The Chilean GovernmentBy H. Araneda
Throughout Chile?s history, mining has consistently been a leading industry in the country. The 1990s marked the beginning of a boom in Chile?s mining industry, especially in copper mining, due to bot
Sep 1, 2012
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The Division of Geology, Quebec Bureau of MinesBy John A. Dresser
At a meeting of the Montreal Branch of this Institute in the autumn of 1928, the Honorable J. E. Perrault, Minister of Mines for Quebec, announced his intention to enlarge the Bureau of Mines of Quebe
Jan 1, 1932