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Compositional Variation and Distribution of Au-Ag-Hg and Au-Ag Alloy Subtypes in Nokomai and Nevis Valley Placers, New Zealand, and their Implications for Gold Sources
By D Craw, L C. Kerr, P Wopereis
Gold placers in the Nokomai and Nevis valleys are dominantly Quaternary in age. They occur mainly in western tributaries of the upper Nevis, eastern tributaries of the middle and upper Nokomai, and in
Jan 1, 2000
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An Oxygen and Carbon Isotopic Study of Some Gold Deposits of Eastern Australia
By Wilson A. F
The use of stable isotopic measurements as a technique for elucidating the origin and history of the water in hydrothermal fluids is relatively new. Recept studies have emphasized the importance of me
Jan 1, 1981
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Paper No. 169. The Training of a Mining Engineer.
A GREAT deal of attention has lately been given to the discussion as to the education required for engineers, and especially for mining engineers. The Institute of Civil Engineers has had a committee&
Jan 1, 1909
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Development of the Boleo Process Flow Sheet and the Direct Solvent Extraction (DSX) Circuit for Cobalt and Zinc Recovery
Development of the Boleo Process Flow Sheet and the Direct Solvent Extraction (DSX) Circuit for Cobalt and Zinc Recovery The metallurgical process designed to treat the El Boleo Cu-Co-Zn-Mn ore invol
Sep 13, 2010
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Ashers-Waituna and Hawkdun Lignite Deposits: Their Resources and Use Potential
By A M. Sherwood
The Otago and Southland lignite deposits represent by far the largest known fossil energy resources in New Zealand. Despite their size they have remained virtually untouched since exploration in the 1
Jan 1, 2005
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The Great Reefton Gold Belt
IF a straight line should be drawn on the map (See 1, page 96) through the northern half of the South Island of New Zealand, from Mt. Domett in the north to Arthur's Pass in the south, and anothe
Jan 1, 1910
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The CSA ventilation upgrade – geotechnical challenges and learnings
By T M. Brettell, D Sidea
The CSA Mine is located in Cobar, New South Wales and is operated by Glencore. Large scale underground production started from 1965, with zinc, lead, silver and copper extracted in the past. The curre
Oct 16, 2017
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On Mining and Metallurgical Education
In New York City, on the walls of the library of the United Engineering Societies are these words:"Engineering-the art of organising and directing men and of controlling the forces and materials
Jan 1, 1941
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Fundamentals to Produce Fe-Mn Alloy by Smelting-Reduction Process
By da Silva C A, Tenorio J. A S, de Assis R M, de Oliveira J R
For Fe-Mn alloy production, two reactions are responsible for this process: the MnO reduction in the slag and the carbon dissolution in the bath. The smelting-reduction process has been studied as a
Jan 1, 1999
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Rapid Colorimetric Procedures in Geochemical Prospecting for Molybdenum
Procedures employing thiocyanate and dithiol complexes of molybdenum have been developed for the determination of the metal in the presence of large quantities of ferric iron. The procedures are devel
Jan 1, 1965
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Land Rehabilitation at Golden Cross, Eight Years After Mine Closure
By D Crequer
Land rehabilitation at Golden Cross is reviewed, 8 years after mine closure in 1997/98, from the perspectives of a Peer Reviewer (land rehabilitation) and a Regional Council Officer (Resource Consents
Jan 1, 2006
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Application of foam as a ventilation control for spontaneous combustion management in a longwall goaf
By O Salisbury
Ingress of air into the longwall goaf environment needs to be managed appropriately to reduce the risk of creating a spontaneous combustion event. The maingate goaf edge is an area of particular conce
Oct 12, 2022
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The Copper-Clay Deposits at Mount Lyell, Tasmania
The copper-clay deposits consist largely of goethite and clayey mudstones carrying native copper, cuprite, and chalcocite. The mudstones are of Ordovician age, are interbedded with Fe-Mn carbonates, a
Jan 1, 1969
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Computer-Based Design of Open Cut Mines
Three stages are involved in the complete design and evaluation of an open cut mine. These are:1. design of the optimu,m ultimate pit, and selectionof the optimum mill capacity,2. development of produ
Jan 1, 1970
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The Barmac Autogenous Crushing Mill - The New Development in Autogenous Crushing and Milling
The Barmac autogenous crushing mill is one of the most successful new comminution technologies to become available to the mining and industrial minerals industries in this decade. The Barmac au
Jan 1, 1990
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Application of Rotating Magnetic Field (RMF) to the Separation of Roasted Ilmenite
By H Aral
A rotating magnetic field can be produced in a magnetic separator by using a magnet rotor fitted with alternate north-south magnetic poles, similar to the rotors currently used in modern eddy current
Jan 1, 2001
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Fractured Vertical Wells Versus Horizontal Boreholes for Methane Drainage in Advance of Mining U.S. Coals
By Mahyera A, Sakashita B, Ahmed U, Abou-Sayed AS
Gas in U.S. coals is primarily composed of 90 to 99 percent methane and up to 10 per- cent carbon dioxide. In composition and heat- ing value, this coal-bed gas is similar to natural gas and can be
Jan 1, 1982
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Mineralogical Studies of the Groote Eylandt Manganese Ore Deposits
By Belcher C. B
The Groote Eylandt manganese ore deposits contain mainly pyrolusite and cryptomelane with lesser amounts of the manganese minerals lithiophorite, todorokite, psilomelane, and nsutite. The major non-ma
Jan 1, 1975
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Solid-Vapour Equilibria in the FeCl3-AlCl3-Cl2 System
By Moyle F. J
This paper describes an apparatus which was developed to study solid-vapour equilibria and presents results which were obtained during a study of the FeCI3-AlCI3-CI2 system. Analysis of the results sh
Jan 1, 1979