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Regional polyphase and polymetallic vein mineralization in the Caledonides of the central Wales orefield
By J. S. Mason
Paper presented at Mineralisation in the Caledonides, the Mike Gallagher memorial meeting held in Edinburgh, 27-28 June 1996. Detailed paragenetic studies of the post-tectonic fracture-hosted vein min
Jun 19, 1905
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Landform replication in quarrying
By R. Allington, G. Walton
The approach has been applied with success to the restoration of chalk workings in southern England, and research and trials relating to restoration blasting and the replication of limestone dale land
Aug 1, 1994
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Flotation of pyrite and arsenopyrite at alkaline pH
By R. J. Gochin, M. A. Diaz
A modified Hallimond tube is described which allows the determination of the ultimate recovery R and the flotation rate constant k in a single, continuous experiment. The range of fine particles which
Apr 1, 1995
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Assessment of rock mass damage from smooth wall blasting at El Soldado mine, Chile
By A. M. Tunstall, N. Djordjevic, H. A. Villalobos
The damage zone behind a typical smooth-wall blast in the open pit was assessed by visually examining diamond drill core to identify blast-induced cracking, mapping core rock quality designations to i
Jun 19, 1905
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Studies of regional drainage geochemistry in Jamaica
By R. G. Garrett, A. J. S. Geddes
Paper presented at the 28th International Geological Congress held in Washington DC, July 1989 (International geochemical mapping sessions). The 1986 geochemical survey was successful in recognising a
Jul 1, 1991
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Diagnosis of tunnel roof stability with a robotic sensor test bed
By G. Zhan, P. Mousset-Jones, G. Danko, J. J. K. Daemen, C. Mezei
Paper presented at the conference Risk assessment in the extractive industries, held in Exeter, 23-24 March 1994, and first published London: IMM, 1994, preprint volume. 18pp., 12 refs. (Originally en
Dec 1, 1994
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Ammonia leaching process for Escondida copper concentrates
By W. P. C. Duyvesteyn, B. J. Sabacky
Reprinted with revisions from Extractive metallurgy of copper, nickel and cobalt, volume I: Fundamental aspects. ed. Reddy R.G., Weizenbach R.N. Warrendale, Pennsylvania: The Minerals, Metals and Mate
Dec 1, 1995
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Determination of separator efficiency curve from areal measurements on polished sections
By G. D. Schena, C Chiaruttini
The feasibility is demonstrated of reconstructing the volumetric distribution of liberated particles and middlings by use of a damped, weighted least-square regularisation method. This allows a precis
Jun 21, 1905
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Resource evaluation of Nsuta manganese carbonate deposit, Ghana
By S. Al-Hassan
The deposit has been exploited for Mn oxide and carbonate since 1916. Known reserves of MnO, however, are almost depleted and the survival of the mine will depend on the exploitation of the carbonate.
Jun 19, 1905
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Antimony-gold deposits of North-Atlantic Acadian-Hercynian domain
By M. L. Leblanc, J. F. Burzynski, D. J. Mossman
A strong heterogeneity in the distribution of Sb+/-Au deposits exists within the North Atlantic Acadian-Hercynian domain. This is reflected in the regional disparity in Sb production among the various
Dec 1, 1991
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Convective scavenging and cascade enrichment in Bushveld Complex melts: possible mechanism for concentration of platinum-group elements and chromite in mineralized layers
By Gruenewaldt von
Paper presented at the IAGOD international symposium on mineralization related to mafic and ultramafic rocks held in Orleans, France, 1-3 September 1993. The principles of shear-driven aggregation of
Apr 1, 1994
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Institution news; IMinE South Middlands branch J.C Boyle travelling schlorship 1998; the institution bookshop; IMinE notice of annual general meeting, Doncaster, 22 January 1998; Mining Qualifications Board press notices; professional calendar
By Marshall Charles Riddell, John Carlon
local news
Jan 12, 1997
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Detection of collectors on concentrator mineral grains by time-of-flight secondary-ion mass spectrometry (TOF-SIMS)
By E. Niehuis, J. Y. Kim, H. G. Cramer, S. L. Chryssoulis, K. G. Stowe, C. Bendel
TOF-SIMS was used to detect, identify from parent molecular ions and determine the relative concentrations of collectors sorbed on the surface of mineral particles in concentrate and tailings samples
Dec 1, 1995
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Mathematical model of the dense-medium drum
By P. J. Baguley
The model has been developed on the basis of the observation that the partitioning behaviour of a particle is related to its calculated terminal velocity. It utilises a theoretical calculation of the
Jun 18, 1905
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Mine backfilling to limit surface subsidence: a case history
By P. H. Carr, G. G. Marino, K. A. Patel
Extensions to a correctional institution at Wabash Valley, Indiana, required development over abandoned coal-mine workings, at 90 m depth, where subsidence was possible at surface. Backfilling of the
Jun 19, 1905
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Lower Cretaceous Pb-Zn ores of Cantabria, northern Spain: new considerations based on petrological and geochemical evidence (Paper originally entitled: Lead and zinc ores from Santander, northern Spain - genetic implications)
By M. Bustillo, S. Ordonez
"Paper presented at the conference Economic geology in Europe and beyond II, models for mineral deposits in sedimentary basins, held in Keyworth, UK, 13-14 April 1994. The Mississippi Valley-type depo
Apr 1, 1995
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Thermodynamics of oxygen in liquid copper, lead and copper-lead alloys
By J. H. E. Jeffes, K. T. Jacob
Solid oxide galvanic cells, of the type: Pt,Ni-NiO | Solid electrolyte | O(metal),Cermet,Pt, were used to measure the activity coefficient of oxygen in liquid Cu at 1 100 and 1 300°C and in Pb at 1 10
Dec 1, 1971
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Laboratory-scale smelting of copper-anode slimes
By G. G. Barbante
Anode slimes produced during copper electrorefining are a valuable source of silver, gold, selenium and tellurium. The conventional pyrometallurgical process for treating slimes involves preliminary l
Aug 1, 1995
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Oxygen mass transfer in air-agitated Pachuca tanks, part 1: laboratory-scale experimental measurements; part 2: mathematical modelling of mass-transfer coefficients
By G. G. Roy, R Shekhar
Pachuca tanks are extensively used for the cyanide leaching of gold and the carbonate leaching of uranium, processes in which oxygen mass transfer plays a very important role. Experiments were carried
Jun 18, 1905
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Role of surface effects in improved dewatering of alumina trihydrate
By L Besra, A. R. Prasad, B. P. Singh
The role of surface-chemical phenomena and the physical processes that participate in the dewatering of a suspension of alumina trihydrate were subjected to a systematic investigation, which has incre
Jun 21, 1905