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Strata control - a new science for an old problem
By R. G. Siddall, W. Gale
In the UK the development of the science of strata control has been strengthened by a resurgence of interest in the specialism of roofbolting and its associated techniques. The evolution of the theor
Jan 4, 1992
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Computer modelling of crystal surfaces applied to mineral treatment processes
By A. M. Marabini, S. Battaglia, M. Ciriachi
A computer program has been developed that produces graphic representations of the atomic structure of any crystallographic plane of a mineral. The information provided by the program relates to a pur
Jan 4, 1992
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Digital simulation of a mechanical-drive dump truck
By I. R. Hanby
A simple but comprehensive method has been developed for the simulation of a mechanical-drive dump truck that enables various parameters to be predicted as a function of time throughout its whole cycl
Jan 4, 1992
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Extraction of copper from dry Salobo (Brazil) chalcopyrite concentrate and aqueous slurries thereof by chlorination with Cl2 gas
By E. A. Brocchi, P. K. Jena
Complete extraction of copper from Salobo chalcopyrite concentrate can be achieved in less than 10 minutes by chlorination of the dry concentrate with Cl2 at 450 degrees C and in 5 minutes by chlorina
Jan 4, 1992
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Numerical prediction of strata deformation associated with longwall mining
By R. I. Jeffery, J. W. Summers
An account is given of the verification and calibration of a numerical modelling technique that has been developed for the prediction of subsurface strata deformation following the extraction of coal
Jan 4, 1992
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Some geochemical consequences of environmental change and human activity in Nova Scotia, Canada
By III, Peter J. Rogers, J. Gordon Ogden
A study is described which attempts to identify the chemical factors of common concern to environmental and exploration geochemistry as indicated by recent work in both disciplines in Nova Scotia. Cor
Jan 4, 1992
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Characterization of composition of mineral surfaces by laser-probe microanalysis
By F. Reich, S. L. Chryssoulis, K. G. Stowe
The surface chemistry of particulates from mineral processing streams can be determined by laser-probe microanalysis. The small area of analysis (2-30 micrometres) enables the surfaces of individual g
Jan 4, 1992
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Geochemical dispersion of gold associated with three gold prospects in Thailand - implications for exploration
By Tawsaporn Nuchanong, Ian Nichol
Investigations of the dispersion of gold in soils and stream sediments associated with three gold deposits in Thailand indicate the existence of different geochemical dispersion patterns in the three
Jan 4, 1992
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Exploration and the environment: the 9th international symposium in the series Prospecting in areas of glaciated terrain, held in Edinburgh, Scotland, 2-4 September 1991
By G. P. . RiddIer
The ninth symposium in the series 'Prospecting in areas of glaciated terrain' was organized by the Institution of Mining and Metallurgy in association with the British Geological Survey and was held i
Jan 4, 1992
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Extraction of nickel from Indian low-grade siliceous ore
By Z. H. Khan, A. K. Saha, D. D. Akerkar
The possibility of extracting nickel from a low-iron, highly siliceous nickel ore of Indian origin using roast reduction followed by an ammonia leaching process has been examined. The ore used in the
Jan 4, 1992
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Primary sulphide mineralization in Cu-Fe-S zones of Kupferschiefer, Fore-Sudetic Monocline, Poland
By Z. Sawlowicz
Finely dispersed, primary sulphide mineralisation in the Cu-Fe sulphide zones of copper-bearing shale of the Polish part of the Permian Kupferschiefer is mainly present in the form of framboids and sp
Jan 4, 1992
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Influence of material properties on high-temperature zone reactions in sintering of iron ore
By L. T. Matthews, C. E. Loo, R. P. Williams
The behaviour of iron ores and fluxes in the high temperature zone of a sintering bed is extremely complex. Following a review of current knowledge, an attempt is made to define relevant terminology t
Jan 4, 1992
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Abandoned Mine Lands Program TN #9 Subsidence Monitoring Using Seismic Activity - Objective
Validate the premise that there is measurable seismic activity associated with abandoned mint lands and that this activity can be used to determine stability of the abandoned mine openings, failure cy
Jan 1, 1992
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Classification Of Mine-Related Subsidence East Of Mississippi River, U.S.A.
By Jesse L. Craft
Field investigation of surface subsidence events associated with both active and abandoned underground coal mines in the United States has established criteria that enable the prediction and classific
Jan 1, 1992
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Geological and Geotechnical Influences on Strip Mining Using In-Pit Bench Techniques
By McManus D
Situations where in-pit bench stripping methods are favourable are introduced. Examples from Peak Downs Mine are used as a guide to the range of methods available.A number of geological and geotechnic
Jan 1, 1992
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Contact Dilution In Ore Reserve Estimation
By D. E. Ranta, John G. Stone
One of the steps in an ore reserve estimate is customarily a rigorous calculation of the in situ grade of the orebody itself. The result of this calculation is usually reduced by some purely arbitrary
Jan 1, 1992
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Chlorine Based In-Situ Leaching of Alluvial Gold Deposits
Alluvial mining even of shallow deposits is often economically a marginal proposition and causes significant disruption of the land surface through the need for large scale excavation. In-situ leach
Jan 1, 1992
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Improved Converter Control (54f63626-b2e1-4139-8fcf-d778be45550b)
By J. -P. Nepper
It has been possible to largely contain converter aisle emissions of SO2 and fumes in the case of batch-wise operated Peirce Smith converters during normal blowing periods with the help of suitably de
Jan 1, 1992
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Florida Phosphate and the Environment: Practices, Problems and Emerging Technologies
By Richard F. McFarlin
INTRODUCTION Phosphate, one of the three major elements essential for all living plants and animals, has been mined in Florida for over a hundred years. Comprising roughly 80% of the U.S. total an
Jan 1, 1992
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Nature And Distribution Of Phosphorus Minerals In Cook Inlet Coals, Alaska
By P. D. Rao
Although phosphorus is a very important biogenic element, its concentration in coal is generally low. Phosphorus concentrations typically range from 0.001 % to 0.229% in raw coals of the contiguous 48
Jan 1, 1992