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Distal rhyolitic tephras from the Taupo Volcanic Zone are widespread in the Auckland urban region. Some are primary air fall or flow deposits but most are reworked. Their presence indicates potential hazard for the Auckland urban region from future eruptions of central North Island volcanoes and associated secondary effects. Geotechnical problems occur as a result of weathering of the tephras yielding sensitive materials.

Jan 1, 1990

This paper shows how small calculators can be used for ball mill simulations. Two calculations are examined, the first to calculate the mill parameters and the second to predict the mill product. In the case of small programmable calculators the programs for two common models are given.

Jan 1, 1976

By Linge H. G

The effect of sodium pyrophosphate and several polyacrylate deflocculants (Freevis 502, 528, 529 and 532; and Maxfloc 1015) on the gold loading on Calgon GRC22 and Norit R035l5 carbons was tested and found to be insignificant in a pulp free enviroument. These deflocculants can therefore be used in plants processing viscous gold pulps without fear of fouling the carbon.

Jan 1, 1990

By Dorricott M. G

This paper reviews the present status of mining engineering education in Australia, outlines the main objectives of current programs, and looks at some of the difficulties that need to be overcome to maintain and improve current standards.A case is made for greater co-ordination and co-operation between the institutions themselves, and between industry and the professional bodies to ensure the highest standards are achieved in the most efficient way.

Jan 1, 1992

By Rosentreter N

Difficulties with froth flotation recovery and vacuum de- watering equipment for the treatment of fine coal have been investigated. Mechanical alterations to cyclone desliming banks, and flotation cells are described. A large disc filter has been replaced by two drum filters for dewatering, and the improvement in plant. operation is discussed:

Jan 1, 1978

The Palmer River rises in the Windsor Tablelands area of the Paleozoic Hodgkinson Basin, 110 kilometres northwest of Cairns. It flows west across the Palmerville Fault and Proterozoic Dargalong Metamorphics to the Mitchell River. East of the Palmerville Fault, its course lies immediately south of the onlapping Mesozoic Laura Basin conglomerates, sandstones and siltstones.Gold occurs in quartz reefs in the Hodgkinson rocks of the Maytown District, in narrow quartz veins in the Dargalong Metamorphics, in the basal conglomerates of the Mesozoic, and more importantly, in alluvial bars within the Palmer River.

Jan 1, 1986

By Atkinson D

This paper briefly outlines the develop ment of the froth flotation plant at Coal Cliff Colliery. The plant was superimposed onto the original flow sheet in which fines were merely thickened and filtered. Test work leading up to the installation is described and the final layout is discussed. Details of the concentrate and tailings systems are given. Preliminary results of a further extension involving the use of a Davcra flotation machine are also given.

Jan 1, 1974

The "Industrial Minerals" sector of the Australian minerals industry over the past decade or so can be seen to be moving away from a somewhat ad hoc grouping of producers to a more highly integrated and sophisticated industry in which products are being more stringently specified and greater amounts of capital are being spent.

Jan 1, 1983

Traditional methods for calibrating the most customisable forms of GyÆs formula for the prediction of sampling variances involve a large amount of experimental work. This work is often extremely sensitive to outlier treatment and often relies on assumptions. A general methodology called æthe consistency methodÆ, however, has proven efficient in guiding these critical steps and adding objectivity to these subjective tasks. After a quick exposition of its principle, it is shown how it can also be used to reduce the amount of experimental work when dictated by budgets.

Jan 1, 2008

The paper looks at those factors which led the Latrobe Valley Community Forum to .focus on shortcomings of the consultative process. that existed around the 1980 period, and the limitations on the ability of the community of the Latrobe Valley to have input to the factors affecting their quality of life. Through a review of the Yallourn East Field Extension project it seeks to demonstrate the changes that have occurred and some of the shortcomings still existant in the consultation process.

Jan 1, 1992

The types of risk to mining projects using environmental protection as justification are examined. In Australia, Governments, whether Federal or State, enforce environmental legislation. The way they do This has an impact on the risk to a project. This is discussed and examples are taken from the Northern Territory uranium industry. Special reference is made to mine closures where the roles are not yet entrenched.

Jan 1, 1994

By Kister H

Hoesch HUttenwerke AG, Dortmund, West Germany, is an integrated steel work of the Estel-group. The nominal annual production capacity-is about 7 Mio tons of steel. Hoesch has along experience in operation of diffe-rent types of slag granulation plants and of utilization of the granulated product. This experience is used to granulate a large amount of blast furnace slag and to process it in own cement plants and produce blast fur-nace cement.

Jan 1, 1979

The hydrological cycle in nature, with particular reference to Australia . 2. The definition of water pollution drawing on the experience of several major countries. 3. A description of the pollutants in water, and why they are pollutants. 4. The classification of waters as defined by major overseas countries. 5. The criteria and standards developed by major overseas countries for the classification of waters. 6. A brief- summary of the legislation adopted by overseas countries for the control of water pollution, and of the organisation and administration of controls. 7. A study of Australian legislation and administration of controls of water pollution. 8. General observations and conclusions.

Jan 1, 1971

By Diehl GW, Kuntonen J

The Tamrock all-hydraulic rock drilling system 400 has been developed to cover as wide a drilling range as possible, from 35 mm holes in tunnelling, roofbolting and development work to 64mm holes in long hole production drilling. Field experience during the last five years shows that the Tamrock drill covers this range in a way that no other rock drill on the market does and recently the range has been success- fully further expanded to cover bench drilling with 76 mm holes.

Jan 1, 1978

Minerals are of course important to our way of living and hence the search and exploitation of minerals has always had a high priority in Australia. Metal mining commenced in South Australian in the 1840s when silver-lead and copper were first mined. This was Australia's earliest mining era and led to the rush that never ended. This and subsequent mining periods have had significant, widespread impact on local and national economic development, settlement, and social conditions.

Jan 1, 1993

This paper describes some research attempts to isolate factors associated with lost time accidents and attitudes to safety. Some results of these investigations are presented and their implications discussed. Proposed future research is outlined. Error analysis and the importance of organisational variables are briefly mentioned.

Jan 1, 1975

Prior to the 20th century much of our infrastructure was provided by the private sector. This included toll roads, tunnels and bridges, power supply, transport and water.With the depressions of the 1890s and 1930s and the world wars, much of this infrastructure passed into public ownership. This was certainly the case in Australia as well as many other Western countries.In the last quarter of the 20th century we are seeing a swing back to private sector provision of infrastructure,-resulting'from increased needs for investment in infrastructure due to changes in

Jan 1, 1993

By Cottrell EC

Remote sensing has been used for many years but until recently its application has been limited by the resolution of the data available. High resolution airborne multi-spectral scanner data (MSS) has proven suitable for a number of applications including environmental management and monitoring. A shallow water mapping research. project completed on the Gold Coast has shown that- remote sensing can be used as a cost effective tool for environmental management and Monitoring.

Jan 1, 1987

It is with great pleasure that I accepted the invitation to make a closing address to this Congress particularly as it is here in Brisbane. The main duty of the International Mine Ventilation Congress Committee and in particular the chairman is to ensure that these conferences are held every four to five years in suitable locations. My main role over the last four years has been to promote holding this Congress in Australia and it was a great relief when the Queensland team and the Australasian Institute of Mining and Metallurgy accepted the challenge in November 1986.

Jan 1, 1988

By J W. Harris

There are numerous detrital diamond deposits worldwide with uncertain or disputed links to known primary kimberlite/lamproite sources. In this study, we utilise 40Ar/39Ar dating of clinopyroxene inclusions in diamonds as a provenance tool applied to the mega-placer deposits along the West Coast of southern Africa. These data demonstrate that most West Coast diamonds originated known Cretaceous kimberlites on the Kaapvaal craton with negligible input from proximal Permian glacial deposits. An EXTENDED ABSTRACT is available for download. A full-length paper was not prepared for this presentation.

Jan 1, 2008