150,772 research outputs found

    Assessing whether rehabilitation programmes from South African mining companies have considered the impacts of climate change

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    A Research Report submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science. May 2016The fifth report by the Intergovernmental Panel on Climate Change (IPCC) has a high confidence level that positive radiative forcing due to anthropogenic influences are causing a warming earth surface, and the largest contributor is CO2. Previous research related to mining and climate change, has been inclined to the development of mitigation measures, further addressing how best the mining sector could reduce greenhouse gas emissions which adversely affect the climate system. Minimal research has focused on adaptation measures. The climate - both present and future - is seen as the most vital determinant of rehabilitation success or failure, specifically rainfall patterns and the temperature. Planning for rehabilitation while taking into account climate change, is the first step to enhancing adaptation, allowing successful and resilient rehabilitation. This study aimed to assess whether mining companies operating in South Africa have considered the impacts of climate change on mine rehabilitation. The study achieved this with the use of a qualitative research methodology which included detailed content analysis of documents and transcripts from interviews conducted. From graphical representations of likely future scenarios of climate change, it was identified that all mining companies will be exposed to climate change, thus increasing their vulnerability to future impacts. Secondly, it was identified that only three of the investigated policies and guidelines on closure make a specific mention to climate during the rehabilitation process (MMSD, ITRC and CoM). Through the analysis of Sustainability Reports, it became apparent that climate change issues are prioritised in the selected companies; however, these predominantly transpire as mitigation measures (i.e. energy consumption, GHG emissions and water availability) in response to legal requirements already instituted as well as forthcoming legal frameworks. Only two of the investigated companies have considered climate change during the rehabilitation process of the mine lifecycle. Additionally, the interview process revealed further that climate change is being considered, during the operational phase of the mine lifecycle and the responses are mitigation measures to comply with the legal frameworks. Lastly, from the identified case studies which show how physical climate change impacts can be addressed, an identified trend showed informed decision making by interdisciplinary individuals using credible regional data contributed to some successes. A total of six challenges were identified where after these were seen as strategic components to further catalyse adaptation planning in mine rehabilitation (data sources and management systems, legal framework, collaborations, research and development, funding and sustainability leadership). The findings of this research have created a foundation on which other research, addressing climate change within the South African mining industry, can progress which may further explore the mining company perspective or alternatively the government perspective which was not dealt with thoroughly in this study.M T 201

    Social impacts of climate change and occupational heat stress and adaptation strategies of mining workers in Ghana

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    Excessive heat exposure due to rising temperatures associated with climate change adversely affects workers’ health, safety, productivity, and psychosocial well-being in occupational settings. In the hot and tropical regions of developing countries, long hours of physically demanding work, coupled with inadequate adaptation policies to climate change, increases the occurrence of heat-related illnesses and injuries, and contributes to the loss of productive capacity, poor decision making, and other negative effects on the social well-being of workers. Based on the theories of social impact assessment, risk assessment, adaptation and resilience planning, this study assesses the social impacts of climate change and occupational heat stress and adaptation strategies of mining workers in Ghana, and thus fills a significant gap in the existing literature. Guided by the pragmatists’ research philosophical paradigm, this study adopted the convergent mixed methods approach by utilising data obtained from four temperature and humidity data loggers, 346 surveys of mining workers, two focus groups and three in-depth interviews. The quantitative data was processed with Microsoft Excel 2016, XLSTAT 2019, and analysed using Statistical Product and Service Solutions (SPSS) version 25 while the qualitative data was processed utilising NVivo version 11 and thematically analysed. The findings suggest that the use of convergent mixed methods showed adequate corroboration and complementarity between the qualitative and quantitative data and helped to obtain credible data relevant for policy decisions on heat stress management, workplace health and safety, and adaptation strategies. Supervisors’ climate change risks perception was adequate, workplace heat exposure risks concerns were moderate and their views of workers’ heat stress experiences were heat-related illness and minor injuries. The differences in supervisors’ climate change risk perceptions and occupational heat stress risk experiences across job experience and adaptation strategies across educational status were significant (p\u3c0.05). Workers’ concerns about climate change effects and workplace heat exposure risks; heat-related morbidities experienced by workers; and their use of heat stress prevention measures significantly differed between Small-Scale Mining (SSM) and Large-Scale Mining (LSM) (p\u3c0.001). The disparity in heat exposure risk factors across workers’ gender, education level, workload, work hours, physical work exertion, and proximity to heat sources was significant (p\u3c0.05). Thermal assessments demonstrated that workers were exposed to high ambient heat conditions that raise their heat stress risk. Workers’ adaptation strategies, social protection measures, and barriers to adaptation strategies differed significantly across the type of mining activity (p\u3c0.001). Based on the seven publications related to the social impacts of climate change and occupational heat stress and adaptation strategies of mining workers, this study recommends that there needs to be a concerted global effort at providing adequate and effective heat exposure and adaptation policies to promote workers’ health and safety, productive capacity and psychosocial well-being; to reduce their vulnerability to heat stress, improve their adaptive capacity and resilience; and enlighten policy decisions and enforcement in the mining industry

    Application of life cycle assessment to estimate environmental impacts of surface coal mining

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    Coal plays an important role in meeting the energy needs of the World. Given its abundance and low cost, its use is bound to increase with the growing energy demand. Despite its importance, there are concerns over coal\u27s environmental burdens. In order to extract and use coal in a sustainable manner, sustainability assessment has to be comprehensive. Life Cycle Assessment (LCA) provides systematic and quantifiable measures for assessing environmental burdens of products and processes. Extensive LCA work has been done on coal use, particularly in electricity generation, but, the coal mining stage has been neglected, for the most part. This has resulted in data gaps in the life cycle inventory (LCI) of coal and, consequently, in the LCIs for electricity and other products that are linked to coal. The situation has resulted in incomplete assessments of the sustainability of coal extraction and use, and potential for suboptimal strategies for reducing the potential impacts of coal, especially in the mining stage. The aim of this study was to employ the general principles of the ISO 14040-49 series LCA standards, adapting them where necessary, to estimate the cradle-to-gate life cycle impacts of coal from surface mining in the United States. Five strip mines that produce bituminous coal were used as case studies. The study assessed the life cycle water use, land use, energy use, abiotic resource depletion and climate change impacts for each mine and compared the performances of the mines based on the impacts. For the studied mines, the life cycle potential water use impact is 178 liters/tonne of processed coal at the mine gate. The potential land use impacts range from 3 to 10 m²- year/tonne. The potential energy use impacts vary from 97 to 181 MJ/tonne, the abiotic resource depletion impacts vary from 7.8 to 9.4 kg Sb-equivalent/tonne, and the climate change impacts range from 38 to 92 kg CO₂-equivalent/tonne. This study provides insight into contributions of mining processes to the impacts of coal. The results of the study contribute the much needed information to fill the data gaps in the LCI of coal, and provide baseline information that can aid the coal mining industry and public policy makers in the development of strategies and policies to sustainably exploit coal --Abstract, page iii

    Social and Environmental Impacts of Artisanal and Small-scale Gold Mining: The Case of Chimanimani National Park

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    In Mozambique, artisanal and small-scale mining provides a livelihood for many people and is an important source of economic development for many rural communities. The number of people involved in those activities is likely growing due to population growth, poverty, high price of mineral and climate change. However, there are many social and environmental problems directly associated with gold mining that overshadowed these economic gains. In this sense, the study aimed to analyze the social and environmental impacts of artisanal mining in the Chimanimani National Park and the relevant legislation. Methodologically, it was used a literature review and field research, with a sample of 28 interviewees. The collected data were processed on IBM SPSS statistical package, version 20.0 and analyzed at a level of significance of 5%. The results showed that the development of artisanal mining activities in the Chimanimani National Park, despite providing employment and income, has created problems of soil erosion, clearance of vegetation and water pollution, in addition to the degeneration of areas agricultural, which threatens the local socio-environmental well-being. Keywords: artisanal gold mining, climate change, Chimanimani National Park, environment, pollution DOI: 10.7176/JRDM/79-05 Publication date:October 31st 202

    Climate change adaptation strategies by small-scale farmers in Yatta District, Kenya

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    Climate change is a great environmental challenge facing humanity today. In Yatta District, residents report frequent crop failures, water shortages and relief food has become a frequent feature of their life. This study examines the adaptation strategies to climate change adopted by the dry-land farming communities in Yatta District. Study participants included 510 randomly sampled small-scale farmers. Key informants were district departmental heads from the Ministries of Water, Agriculture and Environment. Questionnaires, interviews, Focus Group Discussions and field observations were used to generate the data. Quantitative data was analysed using Statistical Package for Social Sciences (SPSS) whereas qualitative data was analysed through establishing the categories and themes, relationships/patterns and conclusions drawn in line with the study objectives. Findings indicate that most farmers adopted autonomous adaptation strategies that included planting drought tolerant crops (76.5%), charcoal burning (52.9%) and rainwater harvesting (20.2%) among others. Chi square results indicated that age, level of education and knowledge of climate change had significant influences on adaptation strategies. Some of these strategies had serious adverse environmental impacts on social, economic and biophysical domains of the environment like putting future agricultural production at risk since farms have been converted into sand mining fields. Major limitations to climate change adaptation were financial constraints (93.4%), lack of relevant skills (74.5%) and lack of scientific and technical knowledge (71.6%). The study concludes that farmers are engaging in adaptation strategies that are fundamentally changes in livelihoods and mainly unsustainable. Livelihood activities such as charcoal burning and sand harvesting in their fragile arid and semi-arid lands ecosystem are destructive and thus, not sustainable. These livelihood changes are significantly influenced by levels of education and climate change knowledge. The study recommends that agricultural extension services be enhanced to sensitize the farmers about climate change thus improving their perception and adaptation strategies. Keywords: Climate change, small-scale farmers, adaptation strategies

    Climate change adaptation in the boardroom

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    Abstract Climate adaptation is recognised by many of the world’s largest businesses as a global risk and one that requires critical attention. The World Economic Forum’s 2013 Global Risks Perception Survey, identified the ‘failure of climate change adaptation and rising greenhouse gas emissions as among those global risks considered to be the most likely to materialize within a decade’ (p.16). Yet despite action by many transnationals and international firms, it seems evident that most Australian companies appear to be struggling to move forward in responding to climate change impacts, apparently paralysed by short-term profit-first thinking, uncertain political risks and a corporate culture unused to volatility and disruption. Research approach This project set out to communicate adaptation to climate change to the “big end of town” and to gather soft data, acquire information and present issues back to the National Climate Change Adaptation Research Facility (NCCARF), the funder of this research. Our approach to the research challenge differed from a traditional technical, analytical or academic method. We used action-learning principles to engage a community in which we, as advisors to corporate Australia and as co-researchers, have social capital and standing. Through trusted information sharing networks, private closed-door meetings and one on one conversation with executives and senior management from over 100 companies we shared ideas, gathered, researched and refined information and tested our findings. Findings Our findings from the boardroom engagement include the following:   The Australian Government expects the private sector to adapt, yet little or no incentives exist to promote this behaviour. Autonomous adaptation as practiced may only benefit the lead actor while creating disbenefit for others (including other corporations, society and the environment). Market practices on current paradigms cannot be expected to meet greater societal adaptation needs. Further adaptation research is required in some areas to help guide shape and monitor adaptation for the private sector. A multiplicity of policy reform may be necessary, but crafting and implementing it is likely to remain beyond the capability of the Australian Public Service (APS) or individual Governments. Highly sophisticated mining, gas and some Asian owned technology companies are leading the way with many opportunities missed by Australian companies. Adaptation for the corporate sector is a key strategic issue, unlike mitigation and corporate social responsibility (CSR), as it benefits the corporate primarily. Insurance dependency may only be a short-term risk transfer mechanism as, in its current paradigm, it can mask risk, create a false sense of security and may impede adaptation.   Conclusion We hope that this report is of benefit to Australian organisations, policy makers, regulators and to researchers in adaptation science. This project shows that, on a whole, the Australian private sector is giving little consideration about the impacts climate change. This project has identified that considerable research gaps exist, but has also provided direction for organisations and researchers. Individual corporations and private sector peak bodies urgently need to explore the risks and opportunities that climate change and associated responses bring. This is especially so for the ICT, aviation, energy, insurance and finance sectors. Please cite this report as: Johnston, GS, Burton, DL, Baker-Jones, M, 2013 Climate Change Adaptation in the Boardroom National Climate Change Adaptation Research Facility, Gold Coast. pp. 81

    A LITERATURE STUDY ON APPLICATION OF DATA MINING TOOLS FOR RICE YIELD PREDICTION

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    Data Mining is Knowledge Discovery in Databases. Collection technique for efficient automated discovery of understandable patterns in large databases. Data mining extract knowledge from historical data. Agriculture crop production depends on biology, climate, economy and geography. Crop yield prediction helps in food security. Different varieties of rice are grown in different time schedule of year. Crop need different cultivation plan for ensuring maximum output. Agricultural crop production depends on various factors such as biology, climate, economy and geography. Also, Scientific and policy communities have recognized the susceptibility of crop agriculture to climate change and questioned the ability of farmers to adapt because of direct and strong dependence of crop agriculture on climate. Several factors have different impacts on agriculture, which can be quantified using appropriate statistical methodologies. Applying such methodologies and techniques on historical yield of crops, it is possible to obtain information or knowledge which can be helpful to farmers and government organizations for making better decisions and policies which lead to increased production. Here our focus is on the literature study on application of data mining techniques to extract knowledge from the agricultural data to estimate crop yield for major cereal crops

    Patterns of infringement, risk, and impact driven by coal mining permits in Indonesia

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    Coal mining is known for its contributions to climate change, but its impacts on the environment and human lives near mine sites are less widely recognised. This study integrates remote sensing, GIS, stakeholder interviews and extensive review of provincial data and documents to identify patterns of infringement, risk and impact driven by coal mining expansion across East Kalimantan, Indonesia. Specifically, we map and analyse patterns of mining concessions, land clearing, water cover, human settlement, and safety risks, and link them with mining governance and regulatory infractions related to coal mining permits. We show that excessive, improper permit granting and insufficient monitoring and oversight have led to deforestation, widespread overlaps of concessions with settlements, extensive boundary and regulatory violations, lacking reclamation, and numerous deaths. As the world's largest thermal coal exporter, Indonesia's elevated coal infringements, risks, and impacts translate to supply chain, sustainability, and human rights concerns for global coal markets

    Gap Analysis Report

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    Social Indicators for Arctic Mining

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    This paper reviews and assesses the state of the data to describe and monitor mining trends in the pan-Arctic. It constructs a mining index and discusses its value as a social impact indicator and discusses drivers of change in Arctic mining. The widely available measures of mineral production and value are poor proxies for economic effects on Arctic communities. Trends in mining activity can be characterized as stasis or decline in mature regions of the Arctic, with strong growth in the frontier regions. World prices and the availability of large, undiscovered and untapped resources with favorable access and low political risk are the biggest drivers for Arctic mining, while climate change is a minor and locally variable factor. Historical data on mineral production and value is unavailable in electronic format for much of the Arctic, specifically Scandinavia and Russia; completing the historical record back to 1980 will require work with paper archives. The most critically needed improvement in data collection and reporting is to develop comparable measures of employment: the eight Arctic countries each use different definitions of employment, and different methodologies to collect the data. Furthermore, many countries do not report employment by county and industry, so the Arctic share of mining employment cannot be identified. More work needs to be done to develop indicator measures for ecosystem service flows. More work also needs to be done developing conceptual models of effects of mining activities on fate control, cultural continuity and ties to nature for local Arctic communities
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