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The Sulphide Ore Treatment Plant at Mount MorganThe ore, as sent to the sulphide mill, is a mixture, in varying proportions, of oxidized ore from above the 450-ft. level and sulphide ore from above and below (to date mainly from above) that level.
Jan 1, 1939
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Fundamental Study of Acid Drainage Control using FlyashJapan is the largest coal importer in the world, importing from Australia, China, Indonesia, Canada, Vietnam, etc. In Indonesia, most of the produced coal is extracted from open cut mines. More open c
Dec 6, 2010
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Some Operational Aspects of Heap Leaching at Rum JungleAn oxide ore heap (80,000 ton assaying 2 per cent copper) and a sulphide ore heap (300,000 ton assaying 1·7 per cent copper) are being leached in series in a closed circuit system. The ore is fri
Jan 1, 1968
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Considering Geology in Drill and Blast Operations to Optimise Ore Body ValueBy L Maw
New ZealandÆs largest gold producersÆ OceanaGold Macraes Mine is characterised by a large tonnage and relatively low grade operation. To survive in diminishing real gold prices, the operation must foc
Jan 1, 2005
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Pressure Leaching of Mixed Cobalt-Nickel SulphidesBy Dyson N. F
Mixed cobalt-nickel sulphides precipitated from ammoniacal process liquors derived from nickel sulphide concentrates, mattes, and reduced nickeliferous laterites have been characterized.The mixed sulp
Jan 1, 1981
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Past and Future Parameters for Mining the Otago Alluvial Gold DepositsThe early records of hydraulic elevator and bucket ladder dredging in the Clutha River system indicate the success of that era of alluvial gold mining in Otago. This paper briefly reviews parameters o
Jan 1, 1992
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Development and Validation of Ore Characterisation Test and its Use in Variability Campaigns of Comminution CircuitsDevelopment and Validation of Ore Characterisation Test and its Use in Variability Campaigns of Comminution Circuits Impact testing was developed by assessing the fragmentation characteristics of ore
Sep 13, 2010
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Study on Utilisation of Flyash for Barrier Layer/Buffer Materials for Radioactive Waste DisposalAbout 15 per cent of total electricity (400 MkW) was generated by nuclear power plants in the world (2009) and about 36 000 tons of uranium has been mined in uranium mines annually. Radioactive waste
Dec 6, 2010
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Estimating Mine Operating Costs - Trials and TribulationsThe projection of operating costs for mining, processing, and other site operating costs is an exercise which can be fraught with considerable peril. Not only are the physical characteristics of eac
Jan 1, 1990
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Oxygen in Matte and Oxidic Nickel in Slag (761da7cb-f038-4aa0-94ae-a2b08821817f)Based on the examination of thirty sets of contiguous matte and slag samples taken from industrial nickel smelters a relationship is predicted between oxidic nickel in slag, oxygen in matte and the Ni
Jan 1, 1980
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The Mineral Potential of NorthlandThe Northland region of New Zealand has a complex geological history which has long been the subject of considerable controversy. Small mineral deposits have been discovered in the past, and some have
Jan 1, 1987
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The Opportunity Cost of Homogenising Concentrator FeedRecently published extensions to the mill-dump cutoff grade theory for joint open pit-concentrator operations lead to equations that must be simultaneously satisfied as a necessary condition for an op
Jan 1, 1981
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Optimisation of Rock Disintegration Based on Acoustic Background of Drilling MachineBy J Fut=
The rotary drilling of rocks is widespread technology in mining and in tunnelling. The paper describes the results of research by aim to find relationships between optimal drilling and sound signal of
Jan 1, 2003
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New generation of gas sensors for underground coal mining applicationsBy M Amanzadeh, S M. Aminossadati, B M. Masum, M S. Kizil, C R. Leonardi
Gas sensing systems are becoming more important in many industries such as oil, gas and mining operations. Particularly in underground coalmines, accurate and reliable monitoring of toxic and combusti
Aug 28, 2017
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Control of the Flotation Rate of Carbonaceous Material in Mount Isa Chalcopyrite OreWhen the mining and milling of 1100 copper orebody commenced at Mount Isa a satisfactory grade of copper concentrate was difficult to produce. The major concentrate contaminants were fine pyrite and s
Jan 1, 1971
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Wire Netting Paddocking in Stopes-Broken Hill South LimitedIn the extraction of level bridge pillars in the South Mine by square-setting methods the general practice is to work transversely from the hanging wall in narrow sections three or four sets wide to t
Jan 1, 1942
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Rio Tinto’s strategic assurance response to the Brumadinho tailings dam failureBy J Lapwood, S Pal, M Pascoe
The devastating failure of Dam I at the Corrego do Feijao iron ore mine near Brumadinho in Brazil on 25th January 2019 left at least 270 people dead or missing. In the immediate aftermath of this even
Jul 1, 2021
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Some Notes on Dry Crushing.The sphere of operations of dry crushing has been so much enlarged of late years that the following notes with reference to its advantages and limitations, and also some practical results in connectio
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Mine value chain reconciliation – demonstrating value through best practiceBy H Arvidson, C Morley
Reconciliation has become very topical over the last ten years but how do we distinguish what is good practice, and even more importantly, show how it adds value? Reconciliation at Anglo American has
Sep 20, 2017
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Consultation with Tangata WhenuaBy C N. Whata
While there is no specific obligation on the part of any applicant to consult directly with tangata whenua (people of the land), recent cases highlight the need to engage in active consultation in ord
Jan 1, 1997