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The Porgera Gold Deposit Structure, Alteration and Mineralisation
By T Leach, B Fulton, R Stewart
Gold mineralisation at Porgera is inferred to have been derived from a deep differentiated magmatic source which is capped by a series of (now tilted) inward dipping sills and stocks, which comprise t
Jan 1, 1995
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Use of Small-Scale Passive Systems for Treatment of Acid Mine Drainage
By P Gunn, M Watts
The general goal of passive acid mine drainage (AMD) treatment is to reduce levels of acidity and metals to acceptable levels. Most treatment systems use either an oxidising or a reducing strategy. In
Jan 1, 2005
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Izmit Bay Bridge Crossing: Integrated Multidisciplinary Approach Reduces Risk And Lowers Overall Project Cost For Bot Bridge Consortium
By Jacob Chacko
The Izmit Bay bridge, a 3-km-long suspension bridge crossing of Izmit Bay, Turkey is planned to be constructed in one of the most seismically active places in the world. The site, which has the poten
Jan 1, 2011
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Design of lining system for a pressure tunnel on the base of interaction between rock and lining
By A. Kazemi, M. A. Ahmadi
Pressure tunnels are constructed nurously in related with powerhouse. In some cases, according to high internal water pressure, rock mass around tunnel can seldom suffer this pressure. So installation
Jan 1, 2003
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Environmental Evaluation Of The Belle Eldridge Mine Near Deadwood, South Dakota
By A. D. Davis, C. J. Webb, C. S. Johnson
The Belle Eldridge Mine is an inactive lead-zinc mine in Spruce Gulch south of Deadwood, South Dakota. Acidic mine drainage (AMD) produced at the site drains into Spruce Creek, a tributary of Whitewo
Jan 1, 2000
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Analyse des modèles économiques des coûts de minage pour les études de préfaisabilité
RÉSUMÉ L’estimation la plus précise possible des coûts de minage est d’extrême importance pour les études de préfaisabilité afin de diminuer les risques financiers des projets miniers. Les méthodologi
Jan 1, 2010
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Geomechanical Studies of an Alpine Rock Mass
By Tiziana Apuani
The study refers to an area of about 70 km2, extended in the Italian Central Alps along the the San Giacomo Valley where different civil and mining works are present The regional geological setting is
May 1, 2009
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Recycling System of Waste Materials from Discarded Mobile Phone
By Kunihiko Takahashi, Gjergj Dodbiba, Hisayoshi Umeda, Toyohisa Fujita
"An increasing number of mobile phones is increasing the number of the discarded mobile phones. Many efforts are thus being made to collect and recycle these devices. This paper is a short introductio
Jan 1, 2008
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Caltrans Bridge Seismic Design/Retrofit Criteria ? Synopsis
By Brian Maroney
In this paper an overview of the California Department of Transportation's (CALTRANS) bridge design criteria is presented. Special emphasis is focused upon seismic design and retrofit criteria. T
Jan 1, 1993
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Geotechnical parameters characteristics for a kind of schist in Iran
By A. Fahimifar, H. Soroush
Abstract: Triaxial tests were conducted on the schist specimens with various anisotropic angles under confining pressures of 0, 7 and 15 MPa, and axial stress-axial strains, were measured and plot
Jan 1, 2003
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Design and Construction of the Fields Point Tunnel Pump Station for the Narragansett Bay Commission CSO Abatement Program, Providence, Rhode Island ? Introduction
By Geoffrey Hughes
The Narragansett Bay Commission (NBC) is a regional sewer authority that serves ten communities in the Providence, Rhode Island metropolitan area. From 1992 to 1999, the NBC developed a comprehensive
Jan 1, 2008
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Investigating Entrainment Levels in Lumwana and Kansanshi Ores using the Froth Stability and Water Recovery Methods
By L. K. Witika, J. H. Masinja
"Investigations of flotation characteristics of Lumwana and Kansanshi ores using formulated frothers were carried out. Of the six frothers tested, two came from the alcohol family, two from the glycol
Jan 1, 2015
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Rock Engineering Aspects of Designing Large Span Caverns at Depth in the Deep Underground Science and Engineering Laboratory
By C. Laughton
Construction of a Deep Underground Science and Engineering Laboratory(DUSEL) is proposed under the auspices of the US National Science Foundation(NSF). DUSEL will provide scientists and engineers with
Jan 1, 2007
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Simbat : High Strain Dynamic Test Of Piles
By Dominique Vié
Standards methods covers the procedures for testing deep foundation to determine the force and velocity response to an impact of a pile driving hammer or similar device. The results of analysis genera
Jan 1, 2002
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Quantification and Controls on as Distribution in Westland, NZ
By D Craw, J Pope
The Greenland Group, Westland, can be characterised with respect to environmental issues by the application of a GIS database (DAME), and specific sampling campaigns. Waters draining gold mineralised
Jan 1, 2006
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Highway Lane Rental Requirement Compromises Blast Site Safety and Security
By Harry L. Siebert
A major Arizona highway project is jeopardizing site safety and security because of the lane rental policy. One million cubic yards of rock must be fragmented to provide two additional lanes parallel
Jan 1, 1997
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Load In A Drilled Foundation. Where Did It Go And When Did It Get There?
By Walter E. Vanderpool
Three drilled foundations for an elevated water-tank were instrumented, tested and monitored during construction and the first two years in service. One shaft was load tested by the Osterberg method.
Jan 1, 2004
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RI 4271 Manufacture Of Sponge Iron In Ceramic Tunnel Kilns
By V. H. Gottschalk
Sponge iron is a product resulting from the reduction of an iron oxide below the temperature at which the product melts. Commercial grades usually contain 80 to 95 percent metallic iron, 2 to 5 percen
Jan 1, 1948
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IC 9490 - Job Training Analysis: A Process For Quickly Developing A Roadmap For Teaching And Evaluating Job Skills
By James M. Baugher, Donald W. Conrad, William J. Wiehagen
This report describes a process for quickly developing information that is useful for skills training. The process is called job training analysis (JTA). Its main use is to structure skills training
Jan 8, 2006
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Experiences with Undermining by Coal in South Africa
By J. N. Van der Merwe
The paper provides an overview of subsidence research which was done by the Sasol Company in South Africa over a period of more than six years. The magnitudes of subsidence elements in South Africa ar
Jan 1, 1986