mining of mine waste dumps
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- mining of mine waste dumps
Surface disposal of mine wastes is the most widely used technology in the world in the management of fine-grain solid mineral wastes such as flotation's tailings (Coal, 2001, EPA, 1994.
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1.1. Notion, Origin, and Classification of Mine Dumps. 1.1.1. General Concept. Mineral wealth makes up more than 70% of resources consumed in the global economy …
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Landfills are a largely untapped resource for many strategic metals (Kennedy, 2012). Valuable recyclable materials formerly regarded as waste can be mined from landfills, providing a new source of such material (Fisher 1995). The scope of this resource is vast: In the UK alone, 2 billion tons of waste sit untouched in landfills (Stein).
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The major waste product of coal mining is waste rock, which is stored in dumps of various sizes. Although the adverse effects of coal waste rock dumps on ecosystems and human health are widely recognised, there is little information on their internal hydrological and geochemical processes in the peer-reviewed literature.
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Landfill mining: is this the next big thing in recycling? | World Economic Forum. We need to change the way we think about …
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Coal mine waste rock is generated during coal extraction and is usually disposed of in non-engineered dumps. The dumps are extended vertically to 100–120 m height to reduce the spatial footprint.
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Gupta, A. K. & Paul, B. A review on utilization of coal mine overburden dump waste as underground mine filling material: A sustainable approach of mining. Int. J. Mining Miner. Eng. 6, 172–186 ...
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Mine dump is a large mound of residues or hill of mining waste (especially from abandoned mine) at the surface of a mine. A …
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Due to the immense size heterogeneity in many mine-waste dumps, it is also necessary to define the size fraction of the target population. Because we are collecting material from historic dumps, the mine- waste material is weathered and secondary weathering products are present We chose to collect the < 2 mm size fraction of the mine-waste ...
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This paper presents results on the stability of slopes of the mine tailing dumps at Enyigba, Southeastern Nigeria. The geotechnical parameters of the slopes were investigated, and stability analysis was carried out with GeoStudio® 2012 developed by Geoslope International Limited. The slope materials were composed of gravel …
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The aim of this study was to analyze the dynamics of the research focused on mining waste and its sustainable management on a worldwide scale from 1988 to 2017. A systematic review and a ...
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Mine waste can be divided into coarse grained wastes that are usually stored in surface dumps, and fine-grained wastes, usually stored in hydraulic-fill structures. …
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Open pit mining waste rock dumps represent very significant structures on most open pit mine sites. If they are not developed well they represent a significant risk to the environment and there are substantial numbers of legacy sites worldwide where waste rock dumps have caused various and severe pollution of the wider environment.
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In Bolivia, 35 km 2 of the Pilcomayo floodplain is covered with heavy metal—contaminated sediments that have been discharged as mining waste over the past 500 years (11). Lottermoser (2) suggested that ~1 million km 2 globally are covered with mine waste, amounting to several hundred thousand million tons of waste. Although this …
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Soil cover system design for mine waste dumps. March 17, 2017. Surface water and groundwater surrounding a mining operation can be significantly affected by contaminated seepage from the Acid Rock Drainage (ARD) in waste-dumps and tailing deposits. An evaluation for prevention and mitigation of environmental impacts generated …
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Waste dumps are a cost and a threat to society. But they don't have to be Image: REUTERS/Ints Kalnins. Peter Tom Jones President, EURELCO and EU MSCA-ETN NEW-MINE. Share: Our Impact. The Big Picture. Explore and monitor how Future of the Environment is ... What's the best way to handle e-waste, including old phone chargers? …
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They point out that increasing mining would mean more damage to the environment, and produce much more waste. Globally, mining produces over 100 billion tonnes of solid waste annually. This waste ...
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The settlement (or subsidence) of mine waste dump is likely to cause landslides, thereby imposing threats on the safety of human beings and other local properties. Hence, it is essential to accurately …
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The most notable impact of mining is the change in land form caused by clearing of vegetation, removal of topsoil and disposal of large amounts of waste. Mine wastes usually include waste rock, overburden, slag, and tailings on land surfaces, while mine wastelands are comprised of stripped areas, open-pits, loose soil piles, waste rock …
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The depths of open-pit mines have been increasing in the last few decades. This transformation generates a vast amount of waste rock material per unit mining area imposing a significant economic ...
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An aerial view of mine dumps near Johannesburg. Photograph: Richard Du Toit/Minden Pictures/Corbis "For most of the gold mines, uranium was merely a waste product and therefore dumped …
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Abstract and Figures. Proper design of waste dumps in open cast mines is essential to avoid any large-scale dump failure which may have significant impacts on safety as well as the economics of an ...
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Nickel-mining companies in Indonesia have pitched the government to allow them to dump their waste, or tailings, into the sea. The country is the world's biggest producer of nickel, one of the ...
به خواندن ادامه دهیدthe mine waste dump at approximately 25°, while the bedrock had a slope of 14° in the south dip direction. The dump was back fi lling up on bedrock at a tilt di ff er -
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The aim of this study was to analyze the dynamics of the research focused on mining waste and its sustainable management on a worldwide scale from 1988 to 2017. A systematic review and a ...
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The laboratory results showed a 66.2 kPa change as well as a 48.8°friction angle deviation in mine waste dump material properties, while the back analysis indicated 33.7 kPa and 27.4°. It means ...
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Instead of being simply dumped, mine tailings can be re-mined. Through this process, characterisation of these wastes will allow for tailor-made, environmentally conscientious management ...
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Usually, the GCP covers only structures located inside the mining lease, such as open pits, mining waste dumps, underground excavations, and others. However, in many cases, geohazards related to ...
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the useful mineral resourcein a surface mining operation In this process a . dump is formed by casting the waste material and dumping it in nearby area. The dump so formed is known as mine waste dump.
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Waste dumps generated from mining that exposes sulfur-bearing overburden can be active sources of acid generation with the potential to severely …
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Countries like Chile still dump toxic mine waste in the sea. Can they stop? - Oceana. In today's modern world, humans need minerals. Smartphones, plasma TVs, heated homes and cookware use metals like copper, zinc and platinum, among dozens of others. They're mined from geological deposits, which run like seams, deep into the …
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Mine waste dumps were formed as a result of disposal of spoils from the open pit mines. The mine dumps are irregularly shaped and are characterized by horizontal terraces with steep edge slopes of 5–30° and a depth of approximately 20–100 m. The primary minerals are nickel, gold and platinum [11,12,13].
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The depths of open-pit mines have been increasing in the last few decades. This transformation generates a vast amount of waste rock material per unit mining area imposing a significant economic, social and environmental liability on the mine operators. The scarcity of dumping land along with the rise in population, competing urbanization …
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Coal mine waste rock (CMWR) generated in coal mining activities is one of the most significant sources of industrial solid waste. Nearly 4.5 billion tons of CMWR stockpiled in more than 1700 waste dumps occupying 150 km 2 of land worldwide ( Bian et al., 2009; Zhao et al., 2008 ). Moreover, it is expected that more than 315 million tons of CMWR ...
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During mining of minerals, the uneconomic materials (i.e. wastes or subgrades) are stacked at different places known as waste dumps. The stability of these dumps has been a major concern over the ...
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Saxena, "Mine Cl osure-Appendix 6.1: Formation and Management of Soils and Overburden Dumps in Opencast Mining Areas," Scientific Publishers (India); pp. 188 – 198, 2008. 15.
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