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Technical Developments And Environmental Improvements On The Peirce Smith Converters At Sumitomo?s Toyo Smelter & Refinery
By Harumasa Kurokawa
Since the initial start-up, the Toyo Smelter & Refinery has been operating in harmony with the ambient environment, and improvements have been implemented with technologies specifically developed for
Jan 1, 2005
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Construction And Design Of Drilled Shafts In Hard Pinnacle Limestones
By Dan A. Brown
The following paper was written by Dr. Dan A. Brown, P.E. Brown is an Associate Professor at Auburn University's Department of Civil Engineering. The paper was originally presented at a FHWA&apos
Jan 1, 1991
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New Crystal Springs Bypass (Polhemus) Tunnel—Design Challenges
By Roy C. Fedotoff, Jon Hurt, Gregg Sherry, Gilbert Tang
The 1,380 m (4,200 ft) long New Crystal Springs Bypass (Polhemus)Tunnel (NCSBT) will replace the existing Crystal Springs Bypass Pipeline. This tunnel project is part of the SFPUC’s $4.3 billion capit
Jan 1, 2007
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Assessing dilution, ore loss and profit differences from various hand-drawn dig limits compared to optimal ore-waste delineations in deposits of variable heterogeneity
By Fouad Faraj
For every blast pattern, zones of unique material types need to be classified before mining. Most material types can be summarized into different kinds of ore and waste. Blocks generated from blasthol
Oct 1, 2024
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Geochemical Mining Impact and Possibilities of its Reduction
By V P. Elpatyevskaya, V S. Arzhanova
Main geochemical problems concerning the environment and mining industry interrelation are connected with the transformation of natural water chemistry by mining wastes. The investigation of many mine
Jan 1, 1995
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Electrical Energy Management In The Ferroalloy Business
By P. J. Brereton-Stiles, M. S. Rennie, N. Singh
Ferroalloy producers are large-scale users of electrical energy, which in many countries is in short supply and increasingly expensive. Preheating and/or pre-reduction using natural gas, recycled furn
Jan 1, 2004
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Evaluation of the Spatial Variation of Bvalue
The estimation of the spatial variation of the b-value of the Gutenberg- Richter relationship is important for both the general interpretation of the mechanism of rock mass response and seismic hazard
Jan 1, 2014
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Selecting the Correct Cyanide Destruction Process for Your Operation
By R. Agius, A. Nacu
"Adoption of the International Cyanide Management Code, regulatory requirements and community concerns have increased the need to implement suitable cyanide destruction processes at gold operations to
Jan 1, 2017
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The Effect of Arching Pressure on a Vertical Circular Wall
By Sangseom Jeong, Kyoungyul Kim, Jaeyeon Cho
"Abstract The lateral earth pressure of vertical circular shaft is investigated by using experimental tests and a theoretical analysis. The emphasis was quantifying on the magnitude and distribution o
Jan 1, 2014
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Minimising Crest Loss by Eliminating Surface Dilation Due to Presplitting
In most mines using presplitting the final excavated wall shows a zone of damage just below the crest and well defined presplit half barrels. The crest damage (surface dilation) zone varies and is add
May 1, 2010
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A Hydrogeomechanical Study Of Overburden Aquifer Response To Longwall Mining
By G. J. Hasenfus
This paper presents the results of an extensive hydrological and geomechanical monitoring program which Gas conducted at a longwall coal mine in W. Va. The field program included monitoring of groundw
Jan 1, 1988
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Geomechanical and Weathering Properties of Weak Roof Shales in Coal Mines
By Hakan Gurgenli
Many coal seams have weak shale immediate roofs that cause ground control problems. Therefore, it is important to know the properties of these shales so that preventive measures can be developed in a
Jan 1, 2006
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Longwall-Induced Ground Movement at a Shale Gas Well Site Located in a District Barrier Pillar—FLAC3D Modeling Results and Interpretation
This paper evaluates the effect of longwall mining on a cluster of unconventional shale gas wells located in a district barrier pillar between a current longwall panel and the future panel north of th
Jan 7, 2020
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IC 7759 Block-Caving Methods At The Sunrise Mine Platte County, Wyo. ? Introduction
By F. L. Wideman
This paper is one of a series on mining methods being published by the Bureau of Mines. It describes briefly mining practices at the Sunrise iron mine of the Colorado Fuel & Iron Corp., Platte County,
Jan 1, 1956
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Observations on the 2005 PDAC Convention
By Bruce Geller
The 2005 Prospectors and Developers Association of Canada (PDAC) convention continued the upbeat mood found in 2004. The global mining industry is booming due to higher commodity prices in nearly eve
Jan 1, 2005
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RI 6221 Effects Of Hydraulic Fluids In Spontaneous Heating Of Coal
By Allan F. Smith
The influence of hydraulic fluids on spontaneous heating in bituminous coals is determined by measurement of the temperature increases produced in coal-fluid mixtures heated to a temperature sufficien
Jan 1, 1963
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Costing Techniques in the Mining Industry
Many mining operations are uncertain of what costs they should be achieving. The majority of cost estimates are based on historical costs that have added contingency factors. Historical costs are a
Jan 1, 1990
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The Titaniferous Iron Ores In The United States; Their Composition And Economic Value. ? Introduction
By Joseph T. Singewald
The term "titaniferous magnetite" is used to designate those magnetic ores of iron that carry more than 2 or 3 per cent of titanium. Large and easily workable deposits of these ores occur in different
Jan 1, 1913
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Geology of the Ore Fault Ni-Cu Deposit, Bird River Sill Complex, Manitoba
By P. Walford, C. Mealin, D. Good
"The geology of the Ore Fault Ni-Cu deposit has been reinterpreted in the light of recent studies of the geology of the Neoarchean Bird River Sill Complex and the occurrence of economic Ni-Cu and Zn-C
Jan 1, 2009
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Seismic monitoring of the Northparkes lift 2 block cave?part I undercutting ? Synopsis
Caving of the second lift of the E26 orebody at Northparkes Mines was monitored with a comprehensive package of instrumentation, including an ISS seismic monitoring system. Seismicity was collected by
Jan 1, 2008