957 resultados para Canadian mining company


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"Containing a selection of cases affecting railways recently dedided by the judicial committee of the Privy Council, the Supreme Court and the Exchequer Court of Canada, and the courts of the provinces of Canada, including decisions of the Board of Railway Commissioners for Canada"

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Thesis (Ph.D.)--University of Washington, 2016-06

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This study provides an account and analysis of the development of systems of educational provision In capitalist democracies, especially in connection with the social origin and relative autonony of those systems. Using the case study of Athabasca University, a Canadian distance-education institution in the province of Alberta, the study is a critical work of historical sociology, in which the shifting social role of a system of educational provision during two transitions of a regional political economy is analyzed. Comparative observations are made in reference to other systems of educational provision and organizations, in particular the training department of a large Company based In the same region as the Unversity. The study explores the social origin and relative autonomy of systems of educational provision In relation to educational ideologies, which are themselves associated with social ideologies. Pierre Bourdieu's theoretical construction of "fields of power'' allows for a consideration of power as a relational phenomenon in the study. In other words, power is understood as being exercised in a way that simultaneously takes account of the power of other actors and groups. Fields of power also allow for an analysis of power as it is exercised at various levels of organizations and within society. The study is organized in two phases. First, an account is developed of the historical period in which the Unlversity and the Company were created, but especially the period of establishment for the Unlversity, 1970 - 75. Conclusions are offered concerning the causal associations between the historical antecedents that gave rise to the two organlzations. It is argued that both the University and the Company were established In part to enact the AIberta government's efforts to enhance Its powers within the Canadian federation (a process called province-building), The second phase is concerned with a more recent period of three years, 1993 - 95. By this time, province-building was not as significant a concern for policy-makers, and the organizational responses of the University and the Company reflected this shift. A divergence of practice is observed at the University and the Company, with actors at the Company encouraging the development of collectivist values for employees, while at the University no such overt strategy was followed, The study concludes that a consumerist model of education developed by the University in 1970 - 75 and expanded In 1993 - 95 contributed significantly to the institution's social origin and relative autonomy. The model was used as an Ideology in the earlier period and as a strategy In the later one, serving to forestall the institution's closure during both periods of crisis, though Ieading to ambiguous social outcomes. A consumerist model may on the one hand be progressive in that expanded access to educational opportunities is made possible. On the other hand, the consumerist model will tend increasingly to provide educational services to those social segments that already have access to educational opportunities.

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Drawing upon critical, communications, and educational theories, this thesis develops a novel framing of the problem of social risk in the extractive sector, as it relates to the building of respectful relationships with indigenous peoples. Building upon Bakhtin’s dialogism, the thesis demonstrates the linkage of this aspect of social risk to professional education, and specifically, to the undergraduate mining engineering curriculum, and develops a framework for the development of skills related to intercultural competence in the education of mining engineers. The knowledge of social risk, as well as the level of intercultural competence, of students in the mining engineering program, is investigated through a mixture of surveys and focus groups – as is the impact of specific learning interventions. One aspect of this investigation is whether development of these attributes alters graduates’ conception of their identity as mining engineers, i.e. the range and scope of responsibilities, and understanding of to whom responsibilities are owed, and their role in building trusting relationships with communities. Survey results demonstrate that student openness to the perspectives of other cultures increases with exposure to the second year curriculum. Students became more knowledgeable about social dimensions of responsible mining, but not about cultural dimensions. Analysis of focus group data shows that students are highly motivated to improve community perspectives and acceptance. It is observed that students want to show respect for diverse peoples and communities where they will work, but they are hampered by their inability to appreciate the viewpoints of people who do not share their values. They embrace benefit sharing and environmental protection as norms, but they mistakenly conclude that opposition to mining is rooted in a lack of education rather than in cultural values. Three, sequential, threshold concepts are identified as impeding development of intercultural competence: Awareness and Acknowledgement of Different Forms of Knowledge; Recognition that Value Systems are a Function of Culture; Respect for varied perceptions of Social Wellbeing and Quality of Life. Future curriculum development in the undergraduate mining engineering program, as well as in other educational programs relevant to the extractive sector, can be effectively targeted by focusing on these threshold concepts.

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Underground hardrock mining can be very energy intensive and in large part this can be attributed to the power consumption of underground ventilation systems. In general, the power consumed by a mine’s ventilation system and its overall scale are closely related to the amount of diesel power in operation. This is because diesel exhaust is a major source of underground air pollution, including diesel particulate matter (DPM), NO2 and heat, and because regulations tie air volumes to diesel engines. Furthermore, assuming the size of airways remains constant, the power consumption of the main system increases exponentially with the volume of air supplied to the mine. Therefore large diesel fleets lead to increased energy consumption and can also necessitate large capital expenditures on ventilation infrastructure in order to manage power requirements. Meeting ventilation requirements for equipment in a heading can result in a similar scenario with the biggest pieces leading to higher energy consumption and potentially necessitating larger ventilation tubing and taller drifts. Depending on the climate where the mine is located, large volumes of air can have a third impact on ventilation costs if heating or cooling the air is necessary. Annual heating and cooling costs, as well as the cost of the associated infrastructure, are directly related to the volume of air sent underground. This thesis considers electric mining equipment as a means for reducing the intensity and cost of energy consumption at underground, hardrock mines. Potentially, electric equipment could greatly reduce the volume of air needed to ventilate an entire mine as well as individual headings because they do not emit many of the contaminants found in diesel exhaust and because regulations do not connect air volumes to electric motors. Because of the exponential relationship between power consumption and air volumes, this could greatly reduce the amount of power required for mine ventilation as well as the capital cost of ventilation infrastructure. As heating and cooling costs are also directly linked to air volumes, the cost and energy intensity of heating and cooling the air would also be significantly reduced. A further incentive is that powering equipment from the grid is substantially cheaper than fuelling them with diesel and can also produce far fewer GHGs. Therefore, by eliminating diesel from the underground workers will enjoy safer working conditions and operators and society at large will gain from a smaller impact on the environment. Despite their significant potential, in order to produce a credible economic assessment of electric mining equipment their impact on underground systems must be understood and considered in their evaluation. Accordingly, a good deal of this thesis reviews technical considerations related to the use of electric mining equipment, especially ones that impact the economics of their implementation. The goal of this thesis will then be to present the economic potential of implementing the equipment, as well as to outline the key inputs which are necessary to support an evaluation and to provide a model and an approach which can be used by others if the relevant information is available and acceptable assumptions can be made.

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One of the global phenomena with threats to environmental health and safety is artisanal mining. There are ambiguities in the manner in which an ore-processing facility operates which hinders the mining capacity of these miners in Ghana. These problems are reviewed on the basis of current socio-economic, health and safety, environmental, and use of rudimentary technologies which limits fair-trade deals to miners. This research sought to use an established data-driven, geographic information (GIS)-based system employing the spatial analysis approach for locating a centralized processing facility within the Wassa Amenfi-Prestea Mining Area (WAPMA) in the Western region of Ghana. A spatial analysis technique that utilizes ModelBuilder within the ArcGIS geoprocessing environment through suitability modeling will systematically and simultaneously analyze a geographical dataset of selected criteria. The spatial overlay analysis methodology and the multi-criteria decision analysis approach were selected to identify the most preferred locations to site a processing facility. For an optimal site selection, seven major criteria including proximity to settlements, water resources, artisanal mining sites, roads, railways, tectonic zones, and slopes were considered to establish a suitable location for a processing facility. Site characterizations and environmental considerations, incorporating identified constraints such as proximity to large scale mines, forest reserves and state lands to site an appropriate position were selected. The analysis was limited to criteria that were selected and relevant to the area under investigation. Saaty’s analytical hierarchy process was utilized to derive relative importance weights of the criteria and then a weighted linear combination technique was applied to combine the factors for determination of the degree of potential site suitability. The final map output indicates estimated potential sites identified for the establishment of a facility centre. The results obtained provide intuitive areas suitable for consideration

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