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Approach to the quantification of hanging-wall behaviour
By D. M. Milne, P. J. Lunder, R. C. Pakalnis
During the mining of an open stope, deformation of the hanging-wall and the potential for dilution generally increase with the size of the exposed hanging-wall. Excluding discrete structures that may
Apr 1, 1996
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Drill productivity evaluation by monitoring
A production drill rig at a site in Sweden was equipped with a monitoring system to estimate production statistics. Drill running times, drill hole depths, penetration rate, rotation speed, thrust, ai
Jun 19, 1905
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Metasediment-hosted epithermal Sb-(Au) mineralization in central Spain: role of hidden Hercynian granitoids
By M. Gallego, R. Oyarzun, L. Ortega
Evidence of metallogenic activity in an area dominated by Upper Precambrian and Palaeozoic metasediments was partially explained in the 1980s when drilling and a geophysical survey detected hidden int
Aug 1, 1995
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Exploration and origin of stratigraphically controlled platinium-group element mineralization in crustal sequence ultramafics, Shetland ophiolite complex
By R. A. Lord, H. M. Prichard
Paper presented at Mineralisation in the Caledonides, the Mike Gallagher memorial meeting held in Edinburgh, 27-28 June 1996. The complex exemplifies a class of olivine-rich, platiniferous ophiolite c
Jun 19, 1905
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Characterisation of Bangladesh ilmenite and study of its reduction mechanism by X-ray diffraction
By A. S. W. Kurny, M. Z. Huq
Bangladesh ilmenite is partially altered, containing pseudorutile, rutile and haematite as well as the predominant ilmenite phase. A typical analysis is 39.45% TiO2, 24.19% FeO and 33.0% Fe2O3. Reduct
Jun 19, 1905
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Bioleaching of iron-stained sands
By A. F. Neil, A. S. Bahaj, P. Watkins, P. M. Hyslop, C. E. Kirby, P. A. B. James
The results of initial work indicate that for 3 of the 5 quarry sands bioleaching reduces the iron oxide content to a commercially acceptable 0.035 wt% Fe20 3, although the time taken to achieve this
Jun 18, 1905
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Notes on the specification of iron and steel suitable for colliery use
By Simons W.
The object of the paper is to describe the standards of quality that should be specified in ordering material ordinarily required for colliery use, and also the qualities most suitable for particular
Dec 1, 1916
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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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Risk analysis design applications in mining geomechanics
By R. J. Pine
Procedures are described for the application of risk analysis or probabilistic methods to mining geomechanics. The methods are widely applicable to existing mine design models. Detailed examples are g
Jan 12, 1992
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Practical approach to the solubility of colemanite ores
By S. G. Ozkan
An investigation was carried out into the effect of physical parameters, such as particle size of the sample, residence time, solid/liquid ratio and impeller speed in the flotation cell, on the solubi
Jun 21, 1905
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High-speed air-compressors for mining work, paper presented at a general meeting of the North Staffordshire Institute of Mining and Mechanical Engineers held in Stoke-on-Trent, 17 January 2016
By Walshe J. M.
The slow-speed compressor is giving place to the high-speed type, with its greater economy of material and space; and, where very large units are required, the turbo-compressor is supplying the need.
Dec 1, 1916
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Comparison of indicator and ordinary kriging in assessment of in-situ coal quality in a Turkish mine
By A. E. Tercan, D. Mamurekli
Ordinary kriging on the assumption of a gaussian error distribution and indicator kriging were used to derive the probability that a given calorific value would or would not be exceeded by coal from a
Jun 19, 1905
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A future in coal: viable or not?
By G. Kill
Although other energy commodities have developed successful futures contracts, long-term contracts still dominate the coal market. To establish whether coal markets will develop in the same way, coal
Aug 1, 1994
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Avoiding the zero-flow solution in mass-balance equations
By S. L. Gay
The conventional mass-balance equations used as constraints can lead to flow estimate values of zero even though the flow estimates should be some positive number. This is because many of the constrai
Jun 21, 1905
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The sinking and equipment of a circular shaft
Paper presented at the Mining Institute of Scotland's annual general meeting held in Glasgow, 8th April 1916. Although there is nothing novel or difficult about the sinking described, circular shafts
Dec 1, 1916
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Influence of source of sample data on geostatistical estimation of reserves of a copper mine
By R. R. Tatiya
Data obtained from a copper mine were used in a comparative study of the reserve estimates generated by applying geostatistical methods to surface borehole data, underground core drilling results and
Jun 19, 1905
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Generation of small bubbles by hydrodynamic cavitation
By J. A. Finch, Zhenghe Xu, Z. A. Zhou
Whether the microscopic bubbles generated by the high energy dissipation and high feed-slurry velocities in new flotation cells are stable in solution and what roles they play in particle collection a
Jun 21, 1905
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Hydraulic conditions leading to exponential mine tailings delta profiles
By P. H. Morris
The exponential delta profile equation matches the profiles of a wide range of coal and metalliferous subaerial tailings deltas well, but the original model implies unrepresentatively low solids conce
Jun 19, 1905
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An energy-based approach to blast design
By D. W. Taylor, I. W. Farmer, N. Mojtabai
Rittinger's and Bond's descriptions of rock crushing relate the energy input required to fracture rock and the surface energy required to form new fractures to the change in specific surface area of f
Jun 19, 1905
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Mass transfer and interfacial phenomena in bubble-agitated systems
By J. K. Brimacombe, F. D. Richardson
Studies have been made of interfacial turbulence occurring in reactions in which indium, zinc and cadmium, dissolved in amalgams, are oxidised into aqueous phases by ferric or mercurous ions. It has b
Dec 1, 1971