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Results
(21
items found)
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Title:
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Backfill Design |
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Author:
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Ferri Hassani,James F. Archibald |
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Description:
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An introductory chapter on backfill engineering including design, specifications, modeling etc. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Drilling for Oil |
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Author:
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Karweit, Michael,Goh, Ian,Karweit, W. Alex |
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Description:
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One of the problems of petroleum engineering is determining the topology of an underlying oil-bearing stratum. In this exercise, the goal is to find this stratum by drilling a sequence of pilot holes and deducing its contour. |
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Context
of Use:
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Higher Education. |
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Title:
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Simulation - Approach to Risk Analysis in Coal Mining |
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Author:
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Joao Felipe Costa,Andre C. Zingano,Jair Carlos Koppe |
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Description:
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Traditional mine planning based on block models built with interpolation techniques such as kriging does not take into account the uncertainty associated with the estimates. These models are inadequate for short-range mine planning. In contrast, conditionally simulated models reproduce the actual variability (histogram) and spatial continuity (variogram) of the attributes of interest. Conditional simulation can be used to address the problem of measuring the uncertainty associated with an estimate. This paper outlines how the sequential Gaussian conditional simulation algorithm can be used to assess uncertainty of grade estimates and also illustrates how simulated models can be incorporated into mine planning and scheduling. A case study demonstrates the efficiency of the method in assessing risk associated with geological and engineering variables. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Geostatistics and the Polygonal Method: A Re-examination |
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Author:
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H. Burger,F. Birkenhake |
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Description:
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The main advantage of geostatistics is the fact that it allows the quantification of errors for any spatial estimate. This estimation error can be used for optimizing additional sampling efford, for classification of reserves or for analyzing the propagation of error during spatial GIS-operations. Geostatistical public domain software packages exist which offer standard and advanced kriging methods for local and global reserve estimation, but nothing comparable for the global estimation error. But confidence limits for the global mean are the basis for reserve classification: Along the horizontal axes of the well known McKelvey Box reserves are ordered according to decreasing geologic assurance of existence whereas the other axis shows the economic feasibility of their recovery. In this paper a proposal is made which combines ideas from the very beginning of geostatistics and objective methods for estimating sampling accuracy using the unique tessellation of a 2D-domain by Voronoi polygons. A Visual Basic program is presented which demonstrates the capability of this approach with regard to global reserve estimation and improved sampling design in environmental research. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Cost Effectiveness of Geophysical Inversions in Mineral Exploration: Applications at San Nicolas |
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Author:
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Nigel Phillips,Doug Oldenburg,Jiuping Chen,Yaoguo Li,Partha Routh |
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Description:
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Effective mineral exploration programs maximize the benefit of appropriate technologies in order to increase cost effectiveness by optimizing the use of drilling, reducing risks, and increasing the speed of discovery. The purpose of this paper is to illustrate potential cost effectiveness by showing how much information can be obtained about a deposit by inverting surface geophysical data alone. The only other information needed is estimates of the physical properties of the various rock types in the area. Geologic information is only used as a measure of success of the inversions performed. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Insights into TQM and Downsizing in Large Organizations |
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Author:
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Alan Brown,Ton van der Wiele |
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Description:
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Many organizations are going through periods of downsizing, rightsizing, re-engineering, restructuring or other types of reorganization with the ultimate goal of reducing staff numbers, developing a leaner organization and reducing costs. At the same time, many of these organizations have already invested or are investing in continuous improvement activities and adopting the principles of total quality management (TQM). What happens to quality in periods of downsizing? Can quality programmes survive when quality departments are completely removed, team members are displaced and the situation for many employees who remain becomes insecure? Can TQM assist in the restructuring process? This paper addresses some of these issues using several large public sector organizations and one mining industry in the state of Western as examples. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Automation of an Underground Mining Vehicle using Reactive Navigation and Opportunistic Localization |
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Author:
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Elliot S. Duff,Jonathan M. Roberts,Peter I. Corke |
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Description:
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This paper describes the implementation of an autonomous navigation system onto a 30 tonne Load-Haul-Dump truck. The control architecture is based on a robust reactive wall-following behaviour. To make it purposeful we provide driving hints derived from an approximate nodal-map. For most of the time, the vehicle is driven with weak localization (odometry). This need only be improved at intersections where decisions must be made ??technique we refer to as opportunistic localization. The truck has achieved full-speed autonomous operation at an artificial test mine, and subsequently, at a operational underground mine. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Title:
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Application of Signal Processing Technology for Automatic Underground Coal Mining Machinery |
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Author:
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Jonathon C. Ralston,David W. Hainsworth,Ronald J. McPhee,David C. Reid,Chad O. Hargrave |
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Description:
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This paper reports on an industrial application of modern signal processing technology in the development of a new automatic conveyor and bolting machine for underground coal mining. The machine is of special interest to the mining industry as it improves mine personnel safety as well as increasing the efficiency of roadway construction. We show how real-time signal processing component technologies are needed to overcome a range of sensing, monitoring, control, and navigational challenges. We also highlight some of the important practical issues associated with the deployment of intelligent processing systems in coal mining contexts. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Ratings/Reviews:
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Title:
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Best Practice Environmental Management in Mining: Cleaner Production |
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Author:
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Environment Australia |
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Description:
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The publication presents practical, cost-effective approaches to environment protection that exceed the requirements set by regulation. Examples of current best practice in environmental management in mining from some of the recognised leaders in the Australian industry are discussed. Australia's better-performing minerals companies have achieved environmental protection of world standard for effectiveness and efficiency??tandard we want to encourage throughout the industry in Australia and internationally. These best practice booklets integrate environmental issues and community concerns through all phases of mineral production from exploration through construction, operation and eventual closure. Mine managers and environmental officers are encouraged to take up the challenge to continually improve their performance in achieving environment protection and resource management and to apply the principles outlined in these booklets to their mining operations. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Ratings/Reviews:
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Title:
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Mine Rehabilitation for Environment and Health Protection: A Training Manual |
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Author:
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European Centre for Environment and Health (ECEH),Industry and Environment Centre,Michael A. Klugman |
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Description:
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This manual was prepared jointly by the United Nations Environment Programme, Industry and Environment (UNEP IE) and the World Health Organisation (WHO). It complements an earlier trainer package on Environmental Management of Mine Sites (UNEP IE Technical Report No. 30). The earlier report introduced in a general way some of the key environmental issues relating to mines. This present manual covers one of these in a more comprehensive manner - that of site rehabilitation. Rehabilitation is the aspect most easily perceived by regulators and the public as being deficient in mining operations. It is important that companies put emphasis on this aspect, and this in turn needs competent, trained personnel. |
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Context
of Use:
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Vocational Training,
Continuous Formation,
Professional Formation. |
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Ratings/Reviews:
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