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Extensive Mechanization Produces Record Performance In Drill-Blast Tunnelling
By Hans Hamrin
Three drill-blast cycles of 3.1 m advance achieved in one working shift of 7.5 hours at the Holsfjorden Tunnel project in Norway. The tunnel, 5235 m long, with a cross section of 8.6 m2, was completed
Jan 1, 1987
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Thermal Fragmentation as a Possible, Viable, Alternative Mining Method in Narrow Vein Mining? Mining, Metallurgy and Exploration
By Larissa Koroznikova, Steve Durkin, Patrick Bouwmeester, Michael Tuck
In currently used mining methods, blasting techniques often causes dilution of valuable ore and results in costly processing requirements. In the context of narrow vein mining of thin and highly conce
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Abstract Page - Site-Specific Prediction of Ground Vibrations Inducedby Blasting
By S. A. Shoop, J. J. K. Daemen
Site-specific blast vibration prediction can be more accurate than using a universal prediction equation. Vibrations from 37 blasts were monitored using three seismographs. Data analysis showed that s
Jan 3, 1985
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Wet Autogenous Grinding In Tumbling Mills ? 1. Introduction
By Marcus Digre
The autogenous grinding method has been progressively employed in mineral dressing plants during the last 15 years. The term has been used with somewhat different meanings (1), (2), (3). In this paper
Jan 1, 1970
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A Novel Probe For Investigation Of Slurry Filtration
By D. W. Wu, M. T. Haque
A novel impedance probe has been commissioned specifically for capturing fast dynamic information about filtration processes. It provides an attractive alternative to more complex measurement techniq
Jan 1, 2000
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Austrian Method Of Tunnel Building In Very Heavily Squeezing Ground In Mountainous Terrain Theory And Practice
By Horst Pöchhacker
The largest structure along the Tauern highway section between Salzburg and Villach is the 6.4-km-long Tauern Tunnel. The major geotechnical problems that came up surprisingly while driving the headin
Jan 1, 1976
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Twin TBM with Four Cutters for Subway Station (RoppongiStation in the Tokyo Metro Line 12)
By Susumu Uchiyama
This machine was manufactured for excavation of the Roppongi station of the Tokyo Metro Line 12. This machine can excavate both the platform and the rail track at the same time in locations where t
Jan 1, 1999
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Lead Contamination At Old Smelter Sites In The West: The Socorro, New Mexico, Case History
By G. S. Austin
Soil next to an abandoned smelter near Socorro, New Mexico, has the highest Pb concentration in the clay-size fraction, although this fraction accounted for only 1 to 3 wt. % of the soil. The depth of
Jan 1, 1992
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Innovations in Underground Communication Infrastructures
By Darrell Gillis
Recent accidents in the United States underground Coal Mines and the on-going carnage in Underground Chinese Coal Mines has shown the danger associated with the lack of communication infrastructures i
Jan 1, 2007
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Urban Tunneling Technology - European Experiences
By Erich J. Jacob
In the past 15 years the enforced improvement of the public traffic systems caused a boom in urban tunnel construction. In 1961 the City of Paris started to build the Express-Metro. Of the 47 km long
Jan 1, 1976
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Copper Precipitation And Cyanide Recovery Pilot Testing For The Newmont Yanacocha Project
By S. Acar, M. Botz
Introduction In 2007, Newmont Mining Corporation will begin construction of a milling and cyanidation leaching circuit for the Yanacocha site in Peru. Ore to be processed in the circuit contains a r
Jan 1, 2007
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The Delivery Of Underground Construction Projects In The UK: A Review Of Good Practice
By Andy Alder
The aim of this paper is to provide an overview and details of good practice, from a United Kingdom perspective, in the development and implementation of major tunnel and underground infrastructure pr
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GIS Applications in Underground Mining
By Anthony D. Hammond
The use of geographic information systems (GIS) as a tool to analyze and display data is gathering momentum in the mining industry. Of particular interest is the capability of GIS to link spatial fea
Jan 1, 2002
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Improvement in Sinter Properties with Reduction in Emissions Through Partially Replacing Coke Breeze by Anthracite Coal
By Rameshwar Sah, Somasekhar Pitchika, Akhil Singh, Seenivasan Rajiah, C. B. Dayanand, G. Balachandran
In the sintering of iron ores, the partial substitution of anthracite coal for coke breeze has been considered to be an effective way of reducing emissions and improvement in sintering properties. In
Jun 2, 2022
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Comparison of Different Blast Design Models, Using a Blasting Software
By Roozbeh Afzali
Designing an appropriate tunnel blasting pattern reduces the cost of rock breakage and subsequent operations such as loading, haulage and support of tunnels. For that reason, we developed a software t
Jan 1, 2008
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Investigation Of The Selectivity Of Ethoxylcarbonyl Thionocarbametes During The Flotation Of Copper Sulfides
In this study, the flotation performances of ethoxycarbonyl thionocarbamate (ECTC), dialkyl thionocarbamate (DATC) and xanthate copper sulfide collectors are compared by the structure-reactivity relat
Jan 1, 2008
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Emergency Repairs to Beach Interceptor Tunnel
By David Jurich, Joseph N. McDivitt
INTRODUCTION South Coast Water District (SCWD) operates the Beach Interceptor Sewer Tunnel(BIST) in South Laguna, Orange County, California between Monarch Beach and Aliso Beach (Figure 1). The 10,
Jan 1, 2007
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Industrial Minerals 2005 – Bauxite and Alumina
By P. S. Baker
CRU estimates that the global supply of metallurgical grade alumina (MGA) grew by 5 percent during 2005 to a little more than 61 Mt (67 million st). About 30.7 Mt (33.8 million st), or 50.3 percent,
Jan 1, 2006
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Specifications For Initial Support In Rock Tunnels
By William F. Daly, William H. Hansmire
Installation of initial tunnel support is often the most uncertain element of work in the design of, and a contractor bidding on, construction of a rock tunnel. The risks the construction contractor a
Jan 1, 1985
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Predictions Of Pit Lake Water Column Properties Using A Coupled Mixing And Geochemical Speciation Model (86271191-aaee-42de-b39f-4185708aba18)
By D. Dunbar
Flooding of open pits now receives considerable attention from the mining industry as an option that may minimize environmental impacts, particularly when anoxia in pit lake deep waters can effectivel
Jan 1, 2001