• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 46
  • 7
  • 3
  • 3
  • 1
  • 1
  • 1
  • Tagged with
  • 70
  • 70
  • 12
  • 12
  • 11
  • 11
  • 11
  • 10
  • 10
  • 10
  • 10
  • 9
  • 9
  • 9
  • 8
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Analysis of downscaling and its management in South Africa's mining industry with special reference to the gold mining industry

Ramontja, Thibedi 25 March 2009 (has links)
The objective of the study was to investigate downscaling in South Africa’s mining industry and the manner in which it was managed with special reference to the gold mining sector. In this regard the study involved literature review, data and information gathering, participating in tripartite stakeholder forums and soliciting opinions from several role players in the industry. Driefontein Gold Mine, one of the largest gold mines in the world, was used as a case study to examine management of downscaling in the gold mining industry. Literature investigation showed that South Africa’s mining industry has always been cyclical and labour was vital for its development. A dichotomy was revealed in the study in that the early years of modern mining were besieged with a continuous shortage of labour; in recent years the opposite is true as the industry is continuously battling with downscaling and shedding of jobs. Historical data shows that the gold mining industry has gone through three periods: the Stable Period (Period 1: 1960-1975); Expansion Period (Period 2: 1976-1987); and Downscaling or Crisis Period (Period 3: 1988-2004). Sufficient evidence was presented to show that the downscaling period was triggered by a combination of political instability of the 1980s and economic factors such as declining gold grades and depressed gold prices. Stakeholders followed a three-phased approach to address negative impacts associated with downscaling. The approach involved holding two tripartite summits; Gold Mining Summit (Phase 1) and Mining Summit (Phase 2) and incorporating recommendations emanating from the summits into the legislative process (Phase 3). At mine level, mines such as Driefontein managed downscaling through a number of initiatives including productivity improvement, restructuring and providing redundant employees with the option of taking extended leave. Economic factors, such as gold grades and ore reserves, suggest that downscaling will continue well into the foreseeable future and will exacerbate the existing negative environmental and socio-economic legacies. It is against this background 3 that international experiences on the management of downscaling were investigated. The study concludes by proposing recommendations and a new strategy to manage downscaling in South Africa’s gold mining industry. The strategy proposes a number of measures that need to be put in place at national, local community and mine levels.
2

Environmental and social responsibility in the extractive industry : a case study of precious metals and minerals in the Republic of Sakha

Yakovleva, Natalia January 2002 (has links)
No description available.
3

The effect of blasting on the rockmass for designing the most effective preconditioning blasts in deep-level gold mines

Toper, Ali Zafer 18 April 2011 (has links)
PhD, Faculty of Engineering and the Built Environment, School of Mining Engineering, University of the Witwatersrand, 2003
4

The needs of miners: political ethics, mercury abatement, and intervention in artisanal gold mining communities

Siegel, Shefa 05 1900 (has links)
This dissertation examines the role of donor-funded international projects to reduce mercury pollution from artisanal and small-scale gold mining (ASM). ASM is the second largest source of anthropogenic global mercury pollution, accounting for roughly 1000tonnes of atmospheric emissions and releases to the environment per annum. The artisanal mining economy involves 10-15 million people across the developing world, and supports 80-100 million people directly and indirectly. In 2003 the Governing Council of the United Nations Environment Program reached consensus that there is sufficient scientific evidence to trigger an international response to global mercury pollution, including the pollution generated by ASM. Yet thus far most international interventions have concentrated on environmental monitoring and assessment, while virtually no efforts have focused on implementing solutions. The aim of this dissertation is to move global mercury policy for ASM past its emphasis on assessments. It does this by developing a philosophical and strategic policy framework to guide future interventions by international institutions. A brief history of global mercury policy is provided, illustrating how ASM has been neglected and examining divisions between ecocentric and technocentric theories of environmental intervention. The relationship between ASM and poverty is examined, reaching the conclusion that because artisanal gold mining is a form of upward mobility for the world's extreme poor, the idea of reducing mercury pollution by redirecting miners into alternative livelihoods is unrealistic; indeed gold itself is the alternative livelihood. Using case studies collected in the field, the issue of conflict over property rights between artisanal miners and large-scale mining companies is explored, and a risk mitigation framework presented to assist companies to coexist with artisanal miners. Finally, a new approach to international intervention is proposed based on three interdependent principles of formalization, capitalization, and education. A plan is developed for directing more expertise and financial resources to the field, and more effectively meeting the needs of miners. Specific recommendations include a rapid assessment methodology to select project sites, and improving operational linkages among public and private institutions.
5

The needs of miners: political ethics, mercury abatement, and intervention in artisanal gold mining communities

Siegel, Shefa 05 1900 (has links)
This dissertation examines the role of donor-funded international projects to reduce mercury pollution from artisanal and small-scale gold mining (ASM). ASM is the second largest source of anthropogenic global mercury pollution, accounting for roughly 1000tonnes of atmospheric emissions and releases to the environment per annum. The artisanal mining economy involves 10-15 million people across the developing world, and supports 80-100 million people directly and indirectly. In 2003 the Governing Council of the United Nations Environment Program reached consensus that there is sufficient scientific evidence to trigger an international response to global mercury pollution, including the pollution generated by ASM. Yet thus far most international interventions have concentrated on environmental monitoring and assessment, while virtually no efforts have focused on implementing solutions. The aim of this dissertation is to move global mercury policy for ASM past its emphasis on assessments. It does this by developing a philosophical and strategic policy framework to guide future interventions by international institutions. A brief history of global mercury policy is provided, illustrating how ASM has been neglected and examining divisions between ecocentric and technocentric theories of environmental intervention. The relationship between ASM and poverty is examined, reaching the conclusion that because artisanal gold mining is a form of upward mobility for the world's extreme poor, the idea of reducing mercury pollution by redirecting miners into alternative livelihoods is unrealistic; indeed gold itself is the alternative livelihood. Using case studies collected in the field, the issue of conflict over property rights between artisanal miners and large-scale mining companies is explored, and a risk mitigation framework presented to assist companies to coexist with artisanal miners. Finally, a new approach to international intervention is proposed based on three interdependent principles of formalization, capitalization, and education. A plan is developed for directing more expertise and financial resources to the field, and more effectively meeting the needs of miners. Specific recommendations include a rapid assessment methodology to select project sites, and improving operational linkages among public and private institutions.
6

The needs of miners: political ethics, mercury abatement, and intervention in artisanal gold mining communities

Siegel, Shefa 05 1900 (has links)
This dissertation examines the role of donor-funded international projects to reduce mercury pollution from artisanal and small-scale gold mining (ASM). ASM is the second largest source of anthropogenic global mercury pollution, accounting for roughly 1000tonnes of atmospheric emissions and releases to the environment per annum. The artisanal mining economy involves 10-15 million people across the developing world, and supports 80-100 million people directly and indirectly. In 2003 the Governing Council of the United Nations Environment Program reached consensus that there is sufficient scientific evidence to trigger an international response to global mercury pollution, including the pollution generated by ASM. Yet thus far most international interventions have concentrated on environmental monitoring and assessment, while virtually no efforts have focused on implementing solutions. The aim of this dissertation is to move global mercury policy for ASM past its emphasis on assessments. It does this by developing a philosophical and strategic policy framework to guide future interventions by international institutions. A brief history of global mercury policy is provided, illustrating how ASM has been neglected and examining divisions between ecocentric and technocentric theories of environmental intervention. The relationship between ASM and poverty is examined, reaching the conclusion that because artisanal gold mining is a form of upward mobility for the world's extreme poor, the idea of reducing mercury pollution by redirecting miners into alternative livelihoods is unrealistic; indeed gold itself is the alternative livelihood. Using case studies collected in the field, the issue of conflict over property rights between artisanal miners and large-scale mining companies is explored, and a risk mitigation framework presented to assist companies to coexist with artisanal miners. Finally, a new approach to international intervention is proposed based on three interdependent principles of formalization, capitalization, and education. A plan is developed for directing more expertise and financial resources to the field, and more effectively meeting the needs of miners. Specific recommendations include a rapid assessment methodology to select project sites, and improving operational linkages among public and private institutions. / Applied Science, Faculty of / Mining Engineering, Keevil Institute of / Graduate
7

Evaluating Environmental Risks in Mining: a Perceptual Study

Ackley, Mary 23 June 2008 (has links)
Gold mining is often associated with positive economic benefits; however, it may also have negative impacts on the environment and human health. It is essential that communities understand the risks and benefits associated with mining, particularly in developing countries where there is often a lack of legislation governing the environmental performance of mining corporations. The perceptions of local people regarding the risks and benefits of mining may differ significantly from those of company representatives, policy makers, and the scientific community. Indeed, public concerns have sometimes been ignored or downplayed by those responsible for the implementation of environmental policies and practices. Examination of the complex social, economic, psychological, political, and cultural factors influencing risk perception in mining communities is thus important for successful risk communication and management. Issues arising from the interplay between socio-economic benefits and risks are particularly acute in small island states which have isola ted and highly limited economic development trajectories. The lessons learned in such cases are therefore instructive for crisis planning across the developing world. This study conducted firsthand empirical research into the perception of environmental and health risks in the communities surrounding the Vatukoula gold mine in Fiji. Primary data was obtained through a survey questionnaire designed to quantify and evaluate perceived risks (n= 340, representing approximately 24% of the target population). Concurrently, environmental samples were collected to assess the extent of environmental impacts at the study site. Study results revealed that gender is an important variable in risk perception at Vatukoula. Major findings include: (1) women feel they have less knowledge about the risks of mining compared to men; (2) women feel they have less control to avoid the risks of mining compared to men; and (3) women and men tend to receive risk messages from different sources. The information obtained during this study was made directly available to local stakeholders, to aid in risk management and decision-making.
8

Géologie et ressources en or du nord-est de la Guinée française ...

Goloubinow, Rostislaw. January 1936 (has links)
Thèse--Nancy. / At head of title on added t.p.: Gouvernement général de l'Afrique occidentale française. Service géologique. "Bibliographie": p. 12-16.
9

Géologie et ressources en or du nord-est de la Guinée française ...

Goloubinow, Rostislaw. January 1936 (has links)
Thèse--Nancy. / At head of title on added t.p.: Gouvernement général de l'Afrique occidentale française. Service géologique. "Bibliographie": p. 12-16.
10

Water is More Important than Gold: Local Impacts and Perceptions of the 1995 Omai Cyanide Spill, Essequibo River, Guyana

Ramessar, Candice Rowena 21 August 2003 (has links)
Improved technologies, increases in global demand for metals, and lax environmental policies and regulations are causing a shift of large-scale mining activities to the tropics. This shift of mining to the tropics has the potential to modify natural ecosystems and disrupt the social structures of rural and indigenous peoples in some of the most remote areas of the planet. This thesis encompasses research done in two villages of Guyana's Essequibo River basin after the 1995 Omai cyanide spill, and illustrates the local social consequences of a large-scale gold mining operation in the tropics. It documents not only the degradation of the local river ecology, but also the changes in local people's perceptions of their environment. That environment, once viewed as pristine, is now viewed as unsafe, leading to disrupted livelihoods and lifestyles. The finding of this study points to a direct link between international economic liberalization policies (which emphasize privatization, foreign direct investment, and economic growth) and the creation of disaster circumstances in developing countries. This thesis research is the result of a total of ten weeks of participant observer research in the area of the Essequibo River, Guyana. It utilizes the methodology of taped interviews of head-of-households. Interviews were conducted with approximately 85 percent of heads-of household of the villages of Rockstone and Riversview. Additionally, interviews were conducted with national and regional governmental officials, regional health officials, local and indigenous leaders, personnel of the Guyana Geology and Mines Commission, and the Environmental Protection Agency in Guyana. Interviews were supplemented with archival research. The findings of this thesis research closely mirror those of other researchers who contend that the social impacts of technological disasters are long-term and more severe than those related to natural disasters. Seven years after the cyanide spill, disruptions in livelihood activities, diet, and household behaviors continued to be evident in the two villages. There is little indication that the high negative perceptions of the villagers as a result of the disaster will change in the near future. The research found that macroeconomic policies, crafted by national governments and overseen by international financial institutions without the involvement of local citizenry, disproportionately affected the poor and rural populations through the degradation of local ecosystems. The thesis also illustrates the usefulness of ethnographic research-in particular, interviews in disaster studies of developing countries. / Master of Science

Page generated in 0.0924 seconds