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The Influence Of Sr2+ On The Formation Of Calcareous Deposits On Freely Corroding Low Carbon Steel In Seawater
The corrosion behaviour of a low carbon steel was investigated in synthetic seawaters with and without Sr2+. It was found that strontium substitutes for calcium in aragonite, rather than precipitating
Jan 1, 2007
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Uncertainty Determination in Rock Mass Classification When Using FRMR Software
By M. Rafie, M. Rinne, F. Samimi Namin
"SynopsisRock mass classification systems constitute an integral part of empirical underground excavation design. One system that is commonly used to classify rock mass is the Rock Mass Rating, or RMR
Jan 1, 2015
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Determining the value of additional drilling
The spatial distribution of copper grades at the Mansa Mina project is highly variable due to the presence of high grade copper/silver/arsenic breccia bodies. Copper grades within the breccia bodies t
Jan 1, 2003
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Research into fire fighting and fire prevention in South Africa
By A. Whillier
The decisive action taken by mine managements in recent years has been the main factor in bringing about the present downward trend in mine fires. A better understanding of the fundamental factors tha
Jan 1, 1981
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The role of gravity flow in the design and planning of large sublevel stopes
By M. Pineda
Sublevel stoping (SLS) is one of the oldest and most used methods for underground mining. It relies heavily on the use of drilling and blasting techniques to remove the rock, and gravity to transport
Jan 1, 2015
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Pit Wall Failures On ?Unknown? Structures
By Phillip M. Dight
A number of impending and actual pit wall failures have been observed and documented which have been interpreted to initiate on newly generated structural features. This infers failure through intact
Jan 1, 2006
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Underground storage in Sydney, some uncommon rock mechanics features of an uncommon project in Australia
By N. Gatelier, T. You, J. C. Kandel
ABSTRACT: Underground hydrocarbons storage is a very specific domain for the designer. He is usually free to adjust the section, shape and layout to cope with the geological and geotechnical condition
Jan 1, 2003
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CFB technology provides solutions for reducing CO2 emissions ? Synopsis
By V. Bari?ic
The scheduled power cuts of early 2008 were a disturbing reminder that South Africa needs to expand its power-generating capacity. Low-grade and discard coals, of which South Africa has much, are a so
Jan 1, 2009
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Micropore Carbon Furnace Lining
By Stefan Basista, Janusz Tomala
Modern constructions of electric ferroalloy furnaces are still based on applying in the lower "liquid" areas the standard carbon materials. What can be illustrated by the experience from several years
Jan 1, 2007
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Empirical Observations of Dilution in Panel Caving
By R. L. Castro
The extraction of ore in panel caving operations also involves the coextraction of non-economic material, known as dilution. Forecasting, avoiding, and understanding the mechanics of dilution is criti
Jan 1, 2014
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Determination Of Optimal Cut-Off Grade Policy To Optimize NPV Using A New Approach With Optimization Factor
By A. Bascetin
One very important aspect of mining is deciding what material in a deposit is worth mining and processing, versus what material should be considered waste. This decision is summarized by the cut-off g
Jan 1, 2007
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Re-aligning the cutting sequence with general support work and drafting a support sequence at Simunye Shaft
By K. Lombard
"‘Roof support awaiting time’ (RSAT) is a term used at Goedehoop Colliery’s Simunye Shaft to describe the potential production time lost due to the continuous miner (CM) standing idle waiting for roof
Jan 1, 2015
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Critical investigation into the problems surrounding pillar holing operations
By L. Mpolokeng, J. P. Labuschagne, H. Yilmaz
"An investigation into pillar cutting was carried out at a platinum mine on the western limb of the Bushveld Complex. The focus was on crush pillar design and implementation in order to ultimately imp
Jan 1, 2015
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An Algorithm To Construct Industry Cost Curves Used In Analysing Cash Cost Performance Of Operations For Selected Minerals In South Africa
By T. Tholana
South Africa hosts some of the world?s largest known resources and reserves of minerals that are strategically important to the global economy. The country?s mining industry contributes significantly
Jun 1, 2013
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Post-Mining Land Use Opportunities in Developing Countries?A Review
By D. Limpitlaw
The origins of mine closure practice have influenced the way in which it is implemented by companies and regulators. Mine closure practices essentially started developing in the 1970s in countries wit
Jan 1, 2014
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A Conceptual Approach To Evaluating The Political Economics Of Mining In Africa And The Sector?s Contribution To Economic Diversification ? Synopsis
By M. H. Solomon
After the global financial crisis of 2008, African mining is entering anew phase of development. The rapid withdrawal of emerging market funding from the critical exploration and development industrie
Jan 1, 2011
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Improvement Of High-Temperature Electric Characteristics Of Manganese Ores
By K. Saito, Y. Miyauchi, T. Nishi, Y. Kizu
At Tokushima Plant of Nippon Denko Co., Ltd. high-carbon ferromanganese is produced by the electric furnace method using lump manganese ores and sintered manganese ores manufactured from fine manganes
Jan 1, 2004
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Teetered Bed Separator And Its Effect On Navigation Plant Fines Qualities
By R Ratlou
Increased contamination due to sand in spiral feed has had a negative effect on the efficiency of spiral concentrators at Navigation Plant. The no. 1 seam at Kromdraai opencast, which was previousl
Jan 1, 2006
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The Evaluation Of The AAC Pump-Cell Circuits At Anglogold?s West Wits Operations
By J. Rogans
This paper discusses the comparative performances of the three activated carbon adsorption circuits at the West Wits operations of Anglogold. These circuits consist of two pump-cell circuits (at Two P
Jan 1, 2002
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Limitations in Accepting Localized Conditioning Recoverable Resource Estimates for Mediumterm, Long-Term, and Feasibility-Stage Mining Projects, Particularly for Sections of an Ore Deposit
A localized nonlinear recoverable resource estimate technique has been applied using typical feasibility or new mining drilling data configurations drawn from a massive database from a mined-out area
Jan 1, 2014