Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Metal mining"”.
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Mergers and acquisitions in the metal mining industries: cases of aluminum, copper, and diversified mining companies
Includes bibliographical references (pages 187-198).
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Integrated mining, pre-concentration and waste disposal systems for the increased sustainability of hard rock metal mining
… and waste disposal functions into the hard rock metal mining system, prior to treatment by conventional grinding and flotation, is proposed as a novel interpretation of Mine-Mill Integration for improving the economics and environmental impact of exploiting deep, low-grade or otherwise marginal …
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TRACKING RELEASE OF RESERVOIR SEDIMENT CONTAMINATED BY HEAVY METAL MINING WASTE: A STUDY OF LARGE-SCALE DAM REMOVAL AT MILLTOWN, MONTANA
… Missoula, Montana, caused an elevation in heavy metals concentration in downstream sediment. The primary source of contamination came from base metal extraction mining waste which had collected in reservoir sediments for more than a century. Health and environmental concerns associated with high …
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TRACKING RELEASE OF RESERVOIR SEDIMENT CONTAMINATED BY HEAVY METAL MINING WASTE: A STUDY OF LARGE-SCALE DAM REMOVAL AT MILLTOWN, MONTANA
… Missoula, Montana, caused an elevation in heavy metals concentration in downstream sediment. The primary source of contamination came from base metal extraction mining waste which had collected in reservoir sediments for more than a century. Health and environmental concerns associated with high …
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Stone tools employed in prehistoric metal mining. A functional study of cobblestone tools from prehistoric metalliferous mines in England and Wales in relation to mining strategies by use-wear analysis and cobble morphometry
This is a study of cobblestone tools from metalliferous mine sites in England and Wales dated to the Bronze Age which were most probably used to extract copper ore. The site assemblages studied are from the Great Orme, Copa Hill in Cwmystwyth, Nantyreira, Parys Mountain and Alderley Edge. The …
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Chimpanzee conservation in light of impending iron ore mining project in SE Senegal
<p>Although metal mining is increasing in Africa, little is known about its effects on endangered ape populations. In Senegal, much of the metal mining is located in the southeastern region, where the effects of mining compound existing conservation problems faced by savanna chimpanzees (<i>Pan …
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Chemical and physical properties of acid mine drainage floc
… regions worldwide, but especially in coal and metal mining regions. These acid drainages are often treated with chemicals to raise the pH of the water and to cause neutralization and precipitation of metals. As neutralization occurs, a looser gelatinous material called "floc" is produced. The …
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Reappropriating post-industrial sites for environmental remediation: the adaptive reuse of Hollinger Gold Mine in Timmins
Over the course of the 20th century, precious metal mining flourished in all parts of Northern Ontario. Ranging from small operations to large scale corporations, thousands of mines assisted in the development of various communities across the province. Today, many of those infrastructure are …
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Syndemic Health Impacts and Environmental Risk Perceptions Associated with Mining Among the Ch'orti' of Eastern Guatemala
In low-income, rural, and indigenous communities, metal mining is associated with numerous negative social, political, economic, human, and environmental health impacts. A number of studies from around the world have looked at specific aspects of human and environmental health related to various …
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Development and application of field methods for determination of the extent of acid mine drainage contamination and geochemical characteristics of stream sediment recovery
Metal-mining processes can negatively affect surface and ground waters through the generation of acidic mine drainage (AMD). Introduced metals typically are deposited from the water column onto the stream bed downstream of the AMD input(s). The drivers of metal deposition onto stream sediments are …
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RESPONSES OF RECENT BENTHIC FORAMINIFERA TO METAL POLLUTION IN SOUTH WEST ENGLAND ESTUARIES: A STUDY OF IMPACT AND CHANGE
… Creek, south-west Cornwall in January 1992 of metalled acidic mine water drainage from the recently closed Wheal Jane tin mine. Shortly after this discharge a post-impact study using the responses of Recent benthic foraminifera as indicators of metal pollution was carried out on this Creek …
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Two Essays on Foreign Direct Investment and Firms’ Performance: Foreign Capital Inflow and Chinese Cross-border Mergers and Acquisitions
… improve their performance to some extent in the metal mining industry and the business services industry.
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Nano- to catchment-scale investigations of metal transport processes in mining-impacted river systems
Millennia of metal mining has left across the world an extensive physical legacy of contaminated mine waste and a substantial impact on the environment. In mining-impacted rivers, efforts to monitor metal mine contamination and remediation strategies to achieve good water quality are often of …
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An Evaluation of exposures to respirable particulates, environmental PM2.5, PAHs and metal compounds in Western Australia
… Particulates, Environmental PM2.5, PAHs and Metal Compounds in The South West of Western Australia. A cross sectional study to evaluate the exposures of children (n=18), and controls (n=15) to respirable particulates PAHs and metal compounds in the South West of Australia during 2011. Ambient …
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Investigating the cause(s) of benthic macroinvertebrate community impairment downstream of two Saskatchewan uranium operations
… accumulate contaminants that are related to metal mining activities (such as metals and radionuclides), the initial hypothesis for this research was that contaminated sediments were the primary cause of benthic community impairment at both operations.In 2003 and 2004 a Sediment Quality Triad …
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SOIL MICROBIAL AND ECOSYSTEM SERVICE RESPONSES TO METAL MIXTURES IN CANADIAN SOILS
Metal contamination is a major environmental concern especially in metal mining countries like Canada. The assessment and cleanup of soils with elevated metal concentrations is an area that has been widely studied. A major challenge faced by environmental scientists when assessing metal toxicity in …
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Design and optimization of a waste rock cover system for arid environments
… sulphide bearing waste rock dumps left from the metal mining process. Typically, the cover systems are designed to prevent the ingress of water and/or oxygen into the waste rock pile so that oxidization and hence acid generation is minimized. In arid environments the covers are generally designed …