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Chairman Bob Dennis, Ministers Frank Walker and TonyMcGrady,ActingMayor Bob Moore, other distinguished guests, fellow delegates to this Carpentaria and Mount Isa Regional Development Forum.Firstly I would like to congratulate the North West Queensland Branch of the AusIMM, and particularly its Committee, on what has been a verysuccessful Forum by any measure and for their kind invitation to me to participate in this Forum.

Jan 1, 1993

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

This paper discusses recent ore reserve methodology at the Woodlawn base metal Mine in New South Wales. The ownership of the Mine changed hands in 1987 and a number of revisions to ore reserve practice were instigated by the new operators. While the overall modeling and calculation procedure remained essentially unaltered, the modifications and revised assumptions significantly increased the ore reserve. While general ore reserve procedures are discussed in this paper, it is the impact of these changed assumptions on the reserves which is our main focus.

Jan 1, 1990

By Holly J

Mr. Champness: I wish to congratulate the authors on their paper, which covers a large variety of subjects. Not every mine is in the fortunate position to effect cost reductions by the sinking of a new shaft, but, as the authors have endeavoured to show in their paper, with improved techniques further reductions are possible. I would like to ask two questions. Can the authors give me an approximate idea...

Jan 1, 1956

Mining engineering, metallurgy and minerals-related geology have proud traditions and are essential professions to support a safe and sustainable minerals industry. However, the future of these professions is under threat. The courses that produce such graduates are disappearing worldwide and the number of graduates available to enter the industry has been falling in English speaking countries for at least a decade. It is unlikely that this problem will be remedied by æsupply and demandÆ. Instead, some active intervention is required.

Jan 1, 2004

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 general characteristics of bauxite deposits in Temporary Reserves held by Bauxite Exploration Pty. Ltd., Western Australia are briefly reviewed. The deposits (slide) are 'near the eastern limit of the bauxite laterite cap which masks the basement rocks of the Darling Range.

Jan 1, 1964

A/method of introducing nitrogen into alloy steels using iron and ferromanganese nitrides is considered. Data are I ded on the nitrides produced. The kinetics of the formation of the'nitride product from the reaction between or ferromanganese powder and ammonia are presented, together with an indication of the efficiency of the Reactions.

Jan 1, 1970

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

Following GyÆs earlier proposals for the use of StudentÆs t-test, a simplified, effective method and philosophy are proposed to test for maximum tolerable bias in data sets as well as in sampling devices. The philosophy of testing is particularly emphasised to derive important practical implications in terms of decision-making and risk control. Conclusions are offered which should equally matter to manufacturers and users of sampling equipment.

Jan 1, 2005

My topic for today is the Crown Minerals of the future. New work initiatives are underway and the organisational structure is being overhauled. These are not insignificant changes and in this paper briefly summarises these proposals. These new work initiatives and changes to the organisational structure will have implications for the industry as a whole and also for the way individual clients interact with Crown Minerals.

Jan 1, 2003

By Giannini L. M

A method using dynamic programming for solving the optimum pit limit problem was presented in an earlier paper. A recent issue of this journal contained some contributed discussion on the implementation of this technique. In this paper we provide some additional ideas and possible options one can incorporate into the method. In particular, an efficient procedure for obtaining further optimum pit outlines on extensions of the original block model is described.

Jan 1, 1987

The paper presents an algorithm for calculating the natural air distribution in a ventilation network (sub-network) on the basis of following data: - for each network branch: labels of starting and ending nodes, label of the branch, resistance and natural depression; - for each fan: the characteristic in the form of a second order equation and initial flow.

Jan 1, 1977

Successful restoration of Ballarat region alluvial gold workings to Box-Ironbark forest requires realistic evaluation of techniques. A stocking level threshold of 68 percent is used to rate the success of 'broadcast' seeding of E. microcarpa, E. Melliodora and E. Leucoxylon.Failure necessitates follow-up enrichment planting with tubestock, which is considered undesirable, interalia, due to pathogen, spacing and economic problems.

Jan 1, 1992

Thank you for that introduction and especially thank you to the organisers for inviting me. I've had a considerable interest in this area and I've had the advantage of an education from Neil on the subject of offering documents as a result of our collaboration together on the Securities Information Review Committee.

Jan 1, 1989

After the last world war, management tended to change from an acquired skill more associated with experience than formal training, to a specific widely-recognised specialism requiring an involved formal education process.That process, of necessity, required the development of business schools, M.B.A. courses -indeed the setting up of professional chairs to deal with the intricacy of general management development.Management research burst forth bringing forward new and exciting theories which developed new techniques, tools and terms.

Jan 1, 1985

The introduction refers to observations made in the early days of the Nationalisation of the Coal Industry in the United Kingdom, indentifying the underground transportation problems. Statistical information is presented, highlighting the considerable developments which have been made in recent years with an evaluation of the manpower and cost involvement.

Jan 1, 1985

The paper considers the factors that will control the importance and the nature of R & D required by the Australian mineral industry over the next decade. The process required to determine the appropriate priorities for research and how it must be managed is described. The work of the Australian Mineral Industries Research Association is used to illustrate this process.

Jan 1, 1986

The use of systematic review methods, derived from System Safety approaches used in the North American nuclear power industry, have become an accepted approach for seeking "approval" for new coal mining equipment and operational changes in NSW. Based on risk analysis, they provide a valuable and needed framework for the reduction of losses related to people, equipment and production.

Jan 1, 1991

By Kelly BJ, Smith GA

The recommendations of a recent American report on "Better contracting for Underground Construction" are considered in relation to Contracting practices on major Australian projects by representatives Of the "classical trilogy" - the Owner, Engineer and Contractor.

Jan 1, 1976