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Reliability of Conventional Ground Support
By Davorin Kolic, Harald Wagner
Conventional ground support in accordance with latest state-of-the-art considers proper preparation of geotechnical investigation, structural design, observation during construction and fair risk shar
Jan 1, 2001
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Separation Chemistry In The Refining Of An Off-Grade Molybdenite Concentrate By Leaching With An Acid Mix
By P. M. Prasad
Off-grade molybdenite concentrates, mainly derived from secondary sources as by-products of the processing of copper, uranium and tungsten ores, do not satisfy the purity requirements (percent MoS2) f
Jan 1, 2007
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Assessment of stability of flow in a modified mine ventilation network considering a presence of fire hazards
By W. Dziurzynski
The present article sets forward the results of field tests that made it possible to validate the mathematical model used in the VENTGRAPH ventilation engineer programmes. The case considered relates
Jan 1, 2009
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New Epithermal Gold Prospects in Western Argentina
By David Shatwell
Recent epithermal gold discoveries in Chile and Bolivia provide increasing evidence of a belt of intermittent, epithermal, precious metal mineralization east of the main Andean porphyry copper belt. T
Jan 1, 1990
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All in all, industrial minerals industry is alive and well
By Stanley Lefond
The health of the industrial minerals industry appears to be improving year by year. In fact, preliminary information suggests that only three commodities (asbestos, bromine, and sulfur-other) failed
Jan 5, 1985
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Thermal Stability Of Low Melting Point NaNO3-NaNO2-KNO3 Ternary Molten Salts For Thermal Energy Storage
By T. Wang
A new generated NaNO3 ? NaNO2 ? KNO3 ternary thermal energy storage system which has low melting point as 124°C and high specific heat capacity was studied for the short and long?term thermal stabilit
Jan 1, 2012
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Entrepreneurial spirit guides development of Gardner’s Point gold mine in Northern California
Introduction Some people say it is almost impossible to get mining permits in California. Some say the day of the lone mining entrepreneur is past. And some say you cannot make money mining gold wher
Jan 3, 1987
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A New Packed Column Flotation System
By David C. Yang
A packed column (or static tube) flotation system is an innovative technology which utilizes a controlled dispersion reagent scheme and a new machine. The unique aspect of the machine is its packed-be
Jan 1, 1988
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Cuprex – new chloride-based hydrometallurgy to recover copper from sulfide ores
By Enrique Hermana, Raymond F. Dalton, Raymond Price, Barry Hoffman
Introduction Chloride leaching of sulfidic ores has been known about for 100 years. It is recognized as a highly efficient process to produce concentrated leach solutions. Despite this, chloride leac
Jan 1, 1988
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Petromineralogical Studies of Late Paleocene–Middle Eocene Phosphate Nodules in the Subathu Basin of Solan District, Himachal Pradesh Mining, Metallurgy and Exploration
By Shamim A. Dar, & Samsuddin Khan, & K. F. Khan, Mohd Shuaib
The Late Paleocene–Middle Eocene phosphate nodules of Solan District of Himachal Pradesh belong to green facies of Subathu Formation of Sirmur group. Field observations indicate sporadic distribution
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Petromineralogical Studies of Late Paleocene–Middle Eocene Phosphate Nodules in the Subathu Basin of Solan District, Himachal Pradesh Mining, Metallurgy and Exploration (16f70676-2537-4d77-9881-921b560cf936)
By Shamim A. Dar, Mohd Shuaib, K. F. Khan, Samsuddin Khan
The Late Paleocene–Middle Eocene phosphate nodules of Solan District of Himachal Pradesh belong to green facies of Subathu Formation of Sirmur group. Field observations indicate sporadic distribution
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The Modeling And Simulation Of Bucyrus Shovel, Part 1: Spacial Kinematics And Virtual Prototype Modeling - Preprint 09-122
In this study, a 3D model of the shovel motion based multi-body system dynamics in the Automatic Dynamic Analysis of Mechanical Systems (ADAMS) environment was developed. The kinematics model of the s
Jan 1, 2009
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MINExpo INTERNATIONAL 2000 Largest Ever Held
By Tim O’Neil
The search for precious metals opened up the American West. And Nevada was right in the heart of this development. In the mid-19th century, prospectors seeking gold roamed the hills of Nevada and di
Jan 1, 2000
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New York Subway Caverns and Crossovers—A Tale of Trials and Tribulations
By Charles Stone, Madan Naik, Drupad Desai, Karel Rossler
Planning of New York’s new subway line dictated the location of shallow underground station caverns and track crossovers. Clear span openings ranging from70 feet to 100 feet and lengths in excess of 1
Jan 1, 2005
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North American Tunneling 2010 Conference Highlights
Even though the economy of the United States remains in recession ? or not, depending on which economist you listen to ? muicipalities still need improved transportation, water and wastewater transit
Jan 1, 2010
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Observation Of Construction Behavior Of A Major Rock Tunnel
By Edward S. Plotkin, Joseph D. Guertin
In a continuing effort to upgrade tunnel design and construction practice, the New York City Transit Authority sponsored a geotechnical monitoring program on a recently completed section of the E. 63r
Jan 1, 1979
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Rock Fall Control In Surface Mining With Cable & Ring Net Fences
By C. O. Brawner, J. Kalejta II
The classical approach to control rock fall and ravel in open pit mining has been to use catch benches. The width and volume of benches is most dependent on the bench height, size of loading equipmen
Jan 1, 2002
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Correct Identification Of Chrysotile Asbestos In Ores
By Allison
During the 1980’s, laboratories opened throughout the United States to serve the analysis needs of a rapidly growing asbestos abatement industry. The samples analyzed were either collected during the
Jan 1, 2005
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Electricity And Circulation Fluidized Bed Power Technology
By Robert Giglio
Looking back over the last 150 years or so, it is not hard to see that electricity has been a primary force in shaping human development. It has been a basic ingredient in our industrial revolutions
Jan 1, 2009
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Development Of An On-Line Coal Washability Analysis System Using X-Ray Computed Tomography
By G. T. Adel, J. D. Miller, C. L. Lin
Washability analysis determines the maximum separation efficiency that can be achieved in the operation of coal preparation plants. Unfortunately, there are no on-line techniques for determining this
Jan 1, 2000