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Review of electrical separation methods – Part 2: Practical considerationsBy K. Hanumantha Rao, K. S. E. Forssberg, H. R. Manouchehri
This paper summarizes the practical considerations of the various electrical separation methods used in mineral processing. The effective factors related to mineral characteristics and equipment attri
Jan 1, 2000
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The Four Fates of the 140-Year-Old Baltimore and Potomac TunnelBy William A. Prosser, Kyle R. Ott, Philip Rice
"INTRODUCTION The existing Baltimore and Potomac (B&P) Tunnel accommodates Amtrak (National Railroad Passenger Corporation) and MARC (Maryland Rail Corporation) service between Baltimore, MD and Washi
Jan 1, 2016
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Chemical Grouts Influence On Mechanical Properties Of Coal ? Laboratory ResearchBy K. Soucek
Extraction of hard coal reserves, but also of mineral resources in general in the underground coal mines includes in itself many anthropogenic interventions in the earth crust. These interventions are
Jan 1, 2006
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Chlorination Of Zirconium Bearing Materials To Produce High Purity ZirconiaZirconium chloride is of great commercial importance as starting materials for production of ZrO2, Zirconium metal and other Zirconium compounds from its main resources (Zircon Sands). The present stu
Jan 1, 1997
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Regional Two-Seam Stress Analyses At The Deer Creek MineBy Hamid Maleki
A geotechnical monitoring program has been implemented at Energy West Mining Company for enhancing site-specific evaluation of longwall stress conditions. This program consists of underground measure
Jan 1, 2009
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The Need For Specialty Chemicals For Flotation Plant Optimization In Developing CountriesBy Prasad S. Mulukutla
INTRODUCTION The use of specialty chemicals In mining Is an Important consideration In determining the economic efficiency of a floatation plant. The plant metallurgist would like to maximize the r
Jan 1, 1993
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Summitville, Colorado - Summitville: The Discovery of a Solfataric Gold Ore BodyBy William H. Bird
Over the past 14 years, the efforts of 2 companies and several individuals have outlined a major solfataric gold ore body in the Summitville district in the southeast San Juan Mountains of Colorado. T
Jan 1, 1990
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CERN’s LHC Project–Large Caverns in Soft Rock at the Edge of FeasibilityBy Hans-Christian Kurzweil, Klaus Mussger
CERN, the European Laboratory for Particle Physics, are upgrading their existing particle accelerator for the next generation of experiments and have three major packages of underground construction w
Jan 1, 2003
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Limestone and Dolomite (1bc2f61d-ab7f-42f9-85f8-1e0bb0878a4b)By Robert C. Freas, Donald D. Carr, Lawrence F. Rooney
Perhaps no other mineral commodities in this volume have as many uses as limestone and dolomite. These carbonate rocks are the basic building blocks of the construction industry, the material from whi
Jan 1, 1994
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Choice of Pumping Pressure in Pre-Grouting in Scandinavian Tunneling ProjectsBy Håkan Stille, Jalaeddin Y. Rafi, Fredrik Johansson
"INTRODUCTIONIn tunneling projects, pre-grouting is performed with the purpose of establishing an impervious zone around the tunnel periphery. This is obtained by reducing the penetrability of the mos
Jan 1, 2016
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Electrostatic and Magnetic SeparationBy J. E. Lawver, R. J. Haskin, A. Nussbaum, E. A. Laurila, W. J. Bronkala, D. M. Hopstock, J. H. Brophy, M. Wada, E. J. Tenpas, R. W. Salmi
Electrostatic separation is the selective sorting of solid species by means of utilizing forces acting on charged or polarized bodies in an electric field. Separation is effected by adjusting the elec
Jan 1, 1985
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Ring-Geared Mills Operated With Frequency Converter (Much More Than Just Variable Speed)By T. R. von Ow
The method of powering mills such as AG, SAG and Ball has a long and technically interesting history. It can be said that almost every decade in the last half century had its own trend. The trends wer
Jan 1, 2010
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Discovery And Geology Of Gold Mineralization At The Turquoise Ridge Project. Humboldt CountyBy E. J. Berentsen
The Turquoise Ridge gold deposit is located near the Getchell Mine, 72 km (42 miles) northeast of Winnemucca, Nevada. The deposit is owned by First Miss Gold Inc. The host rocks consist of Ordovicia
Jan 1, 1996
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Rock Fracturing Techniques For In Place LeachingBy George B. Griswold
The two most stringent parameters for in place fracturing of rock are the lack of any initial void space in the rock which to expand into and the ability to gain access only through drill holes. These
Jan 1, 1969
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Hong Kong: Fire Strategy, Life Safety and Ventilation in Road TunnelsBy John Armstrong, Michael Savill, David Powell
Hong Kong is an intensively developed region and has the highest vehicle densities in the world. In 2000 there were 6.6 million people and 580,000 vehicles using 1,890 km of road covering the 1084 km
Jan 1, 2001
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Seismic Refraction Equipment For Industrial Mineral ExplorationBy Stephen V. Thompson
Within recent years portable seismic refraction units have found their place in the industry for shallow investigations, Completely portable, relatively inexpensive and of proven accuracy, the portabl
Jan 1, 1964
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Bioleaching Of Refractory Gold Concentrates At High Pulp Densities In A Non-Conventional Rotating Drum ReactorBy M. N. Herrera
The bioleaching of mineral sulfide pulps in a bench-scale rotating drum reactor has been studied. The reactor includes horizontal paddles in the inner wall for lifting of the mineral pulp. The perform
Jan 1, 1997
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Selecting Circuits To Prepare Beneficiation Circuit Feed From Primary Crusher ProductBy M. D. Flavel
Testing methods are described to help in decisions of selecting the most viable comminution circuits. The authors present a comparison evaluation based on numerous studies to help make initial choices
Jan 1, 1981
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Analytical Design Procedure Using The Wilson EquationBy V. A. Scovazzo
The analytical pillar design procedure employing the Wilson equation is based on the site-specific material strength of the floor, pillar, and roof rock. Stable pillars so designed will sometimes be l
Jan 1, 2010
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The Role Of Mathematical Modelling And Simulation In Modern Mineral Processing Practice And ControlBy I. J. Dowdeswell
Perspective Man is a model maker. Throughout recorded history man has-used models both to provide insights into the workings of the processes which surround him and as a step towards the eventual con
Jan 1, 1972