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By Morrison K

This paper describes an approach developed by the authors for integrating social and environmental impact assessment (SIA and EIA) for mining projects. The approach is an evolving one and is based on experience gained over the past five years undertaking environmental and social impact assessment for a range of mining and other projects. The approach described is an attempt to systematise the various steps undertaken in impact assessment and the means of integration of the two approaches.

Jan 1, 1987

By Blom W. M

Shareholders, creditors, government agencies and auditors all have a different perspective of financial reports which is determined by the uses to which they put the information disclosed in the report.Shareholders today are better informed than previously and are more aware of the market in which they are investing. This is the result of the increasing role of institutional investors and the increasing reliance being placed on analysts to interpret financial information.

Jan 1, 1990

Aspects of sampling are becoming more complex, involving a correct statistical approach to collection as well as geological and possibly pedological control. Advanced chemical techniques and techniques of rapid analysis need to be understood. Results may require statistical analysis. The elementary aspects of sampling still need constant attention by those controlling a programme of sampling. No one person will have sufficient knowledge of statistics, geology, pedology and chemistry to be fully conversant with all the aspects of sampling but, by developing a correct approach, problems can be identified and solved.

Jan 1, 1976

A computer programming language known as GPSS is described and possible applications for the mining engineer are presented. The language is continually being upgraded with improved versions appearing about every three years. The tremendous power of the language is considered by comparing it with standard engineering programming languages, such as Fortran or Basic. Sample problems that can be solved using the language are indicated. The advantages and disadvantages of the languages are also discussed.

Jan 1, 1987

The Century zinc deposit is located in Queensland approximately 250 kilometres north north-west of the provincial city of Mount Isa, on Lawn Hill Station and within 150 kilometres of the Gulf of Carpentaria.ThefirstMining Lease in this area was pegged in 1887. The Silver King vein is the largestvein deposit in the area and has produced lead and zinc, in addition to 74,000 ounces of silver during its history.A total of forty three veins containing silver, lead and zinc are now known, all of which were discovered by prospectors within 10 years of the first vein being recognized.

Jan 1, 1993

Mine planning for ore recovery by open stoping and pillar recovery is becoming more sophisticated, but there are basic operating constraints which must be imposed if this planning is to realise the production results on which the mine is dependant. The production reliability of an open stope is usually a high priority and common design problems can be identified. A range of practical considerations which should be considered at the mine planning stage are reviewed including equipment performance, blasting technology, ventilation requirements, development layouts, lead time, ground conditions, support, backfilling and ore recovery.

Jan 1, 1982

By H Jha, M C. Thomas, P Gupta, S K. Sit

The modern jig with a state-of-the-art control system is much more effective than its older version. This improved control system is used to modulate the amplitude and the frequency of the jig cycle. These two prime parameters are optimised with respect to feed characteristics for best jigging performance. Based on this understanding any jigging plant can be optimised. In addition to these established facts present study shows process efficiency improves further through optimisation of the feed quality.

Jan 1, 2007

Subsidence data resulting from longwall mining in the northern part of the Newcastle Coalfield of New South Wales has been reviewed. Themain factors influencing subsidence variability in this area (apart from width/height ratio) are strong bridging strata, the effects of the first major goaf fall, mining direction and depth of cover. In 1987 the NSW Department of Mineral Resources produced a guide to subsidence prediction for the Newcastle Coalfield which is still widely used. The current study shows this guide to be no longer appropriate for this area. An alternative prediction curve, incorporating more recent data, is suggested.

Jan 1, 1998

The eastern Asia island-arc systems are regarded as specific marginal structures having the common features of geological development and deep structure. The notions on deep structure of island- arc systems are based on the data of studies of the mantle and low-crustal xenoliths. Analysis of location of deposits and ore occurrences of different ages within island arcs in comparison with, the processes of deep heat and mass transfer allows us to develop a-model of mobilization, migration and accumulation of ore substance in the "crust-mantle" system.

Jan 1, 1987

R F Johnston 1 ABSTRACT The possibilities for bacterial leaching of refractory gold ores found in the Central Victorian region of Australia are examined. The behaviour of bacteria, especially 77iobacillus ferroaridans is outlined and the effects of these when they are exposed to pyrite, arsenopyrite and stibnite are examined. The factors which are particular to Central Victoria are outlined and the possibility of adapting a bacterial culture to suit the conditions is discussed. It is concluded that a bacterial leaching system is a feasible proposition and that it could enhance leaching rates and yields.

Jan 1, 1994

Despite improving technology, better training and the use of modern monitoring and communication systems there is a disproportionate rate of diameter occurrences in the mining industry. The use of appropriate plans and a practical approach and managing risk can reduce the number of occurrences and ensure better control of emerging situations when they do Occur.

Jan 1, 1998

When a fire or explosion occurs underground the ventilation maybe disrupted and the atmos- phere may become oxygen deficient and filled with noxious and flammable gases. The basic survival technique for:any man alive underground is to escape and this may be achieved and rescue workers may enter such atmospheres to carry out rescue work underground by using appropriate breathing apparatus.

Jan 1, 1983

The paper explains the genesis of the Ballarat College of Advanced Education to its unique position in mining engineering education. A description follows of the development of the Graduate Diploma in Occupational Hazard Management which commenced in 1979 in the cooperative mode of four groups of three weeks full- time study followed by twenty-three weeks in industry. In particular an analysis will be given of the state of origin of students, ages and employing industries. Given the experience from the evolution of this course a similar process is described for the Graduate Diploma in Mining which has been accredited to commence early in 1987.

Jan 1, 1986

Economies in cemented fill demand the utilisation of the full potential of the portland cement component of the mix. If declined tailings are used, it is desirable to establish the optimum particle size distribution. Pozzolic materials and slags are. very useful additions to increase the amount of cementitious material through reaction with calcium hydroxide produced by hydration of the cement. It is also essential to check out the presence of substances which may seriously affect the setting and hardening of the cement or the durability of the cement bond. The importance of quality control in the preparation of cemented fill cannot be over Emphasised.

Jan 1, 1973

During Gepp's lifetime, Australia was in the forefront of science and art in metallurgical practice. This did not come easily for although blessed with a unique mineral deposit at Broken Hill large in size and rich in values much courage and daring was needed in the development of processes whereby they could yield the best results.The resultant development of the flotation processes at Broken Hill is one of the most important inventions of the 20th century.

Jan 1, 1993

Deformation of the lithosphere by tectonic forces is investigated from both observational and theoretical standpoints. Global and regional geophysical data bases, coupled with the means for their rapid display and analysis, facilitate recognition of areas of the con- tinents and oceans where the response of the lithosphere to these deforming processes might fruitfully be studied. Gravity anomalies, from Seasat altimeter data and from land and shipboard measurements, provide critical infor- mation on the isostatic state of deformed lithosphere and therefore on its thermal and mechanical properties.

Jan 1, 1987

Modelling of Magnetic Carrier Separation Process Using Computational Fluid Dynamics

Sep 13, 2010

Orebodies in the Mt. Charlotte - Hannans North Area N. & B. of the town of Kalgoorlie provide a marked'dontrast to the pyrite - telluride lodes of the Golden Mile, although both groups of orebodies appear to be fundamentally related. These highly siliceous telluride free orebodies N. of the Golden Mile are closely related to strong oblique faulting. The Golden Mile. lodes, while possessing an apparent over-all relationship to the oblique faults also have a close relationship to E.-dipping strike faults.

Jan 1, 1964

By Enugroho E, Nashution Y, Susanto M

PT Allied Indo Coal is the owner of the Parambahan Open Cut Coal Mine in the Ombilin Basin in West Sumatera with an annual production of in excess of 0.5 million tonnes/year of saleable coal.The parent company Allied Queensland Coal was one of the first foreign companies granted a contract of work. by the Indonesian Government. PT Allied Indo Coal is therefore a contractor to the Indonesian Government and pays a 20 per cent royalty of all coal mined.

Jan 1, 1992

By P McCarthy

Many mining operations developed in the last 15 years have not performed to expectations. Problems experienced include lower than planned development and production rates, geotechnical/stability problems, unplanned dilution, reduced metallurgical performance and unbudgeted capital/operating costs. Most of these problems can be directly attributed to decisions made on the basis of geoscience interpretations and estimates. Recent case studies continue to provide examples of unplanned events linked to the use of geoscience information. These studies illustrate the need to improve the way geological information is used in mine feasibility and operations. Comprehensive assessment of the consequences of inappropriate technical decision making is still rare; however, the information that is reported highlights the significant financial impact on a companyÆs bottom line.

Jan 1, 2006