Background Mining activities, including prospecting, exploration, construction, operation, maintenance, expansion, abandonment, decommissioning and repurposing of a mine can impact social and environmental systems in a range of positive and negative, and direct and indirect ways. Mining can yield a range of benefits to …
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Aggregate is mined from the earth, either dug out of pits or blasted out of quarries. This process has many significant environmental impacts. [1] Creating the pits or quarries requires the removal of virtually all natural …
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Published: 22 September 2020. Environmental impacts and decarbonization strategies in the cement and concrete industries. G. Habert, S. A. Miller, V. M. John, J. L. Provis, A. …
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Last year, the environmental campaign group Seas At Risk imagined a society in 2050 that had banned mining in 2020. Bereft of a constant supply of metals, the blueprint completely overhauls the ...
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These trends have brought major attention to issues of economic inequality, environmental harms of mining, and environmental justice, which is putting pressure on the mining industry to make a case for its operations in the country, and to justify the …
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Because of its high level of energy consumption, the cement processing creates environmental and health problems all over the world; its emissions degrade air quality and contributed in 2015 to ...
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At least 23 million people around the world live on flood-plains contaminated by potentially harmful concentrations of toxic waste from metal-mining activity, according to a study. UK scientists ...
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Sand is a key ingredient for concrete, roads, glass and electronics. Massive amounts of sand are mined for land reclamation projects, shale gas extraction and beach renourishment programs. …
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1. Erosion. One of the effects of mining on the environment is erosion. The enormous Ok Tedi Mine in Papua New Guinea is a perfect example of how nearby areas can be significantly impacted by the erosion of exposed slopes, mine dumps, tailings dams, and the resulting siltation of drainages, creeks, and rivers.
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2.2 Life cycle assessment methodology 2.2.1 Goal and scope. The aim of this study is to assess the environmental impacts of GO and rGO production. We analyze and compare three production routes: first, hydrazine and glucose, which are processes analysed in situ during the laboratory preparation of the materials, and second, we …
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The Environmental Impacts of Concrete. Cement and global warming. • Making cement results in high levels of CO 2 output. • Cement production is the third ranking producer of …
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Since concrete is used on such a large scale, it also produces large amounts of heat-trapping greenhouse gases, mostly from a manufacturing process that emits …
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This paper reports an investigation on the influence of inland exposure conditions, concrete quality and cover depth on carbonation-induced corrosion initiation of steel in concretes exposed to urban, inland environment. 100 mm concrete cube specimens of were prepared using five types of binder namely plain Portland cement …
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Abstract. Ground control is an integral element of mine design and worker safety. The use of concrete pillars for underground mines is of paramount importance to maintaining the economic and operational security of structures. This paper deals with the use of fiber-reinforced concrete (FRC) as pillars via laboratory and field tests.
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Environmental Impact Assessment (EIA) is a superior tool use for assessing environmental changes in the opencast limestone mining region. In mining and its development, there is currently pervasive global concern focused on the need to move the mining sector to a more sustainable environment. In limestone mining, the waste …
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Environmental Cost of Sand Mining. Steel is refined from ore, lumber milled from trees and oil pumped from underground wells, but nature does most of the work and refining for sand. "With a little washing and size sorting, sand is ready to use in its natural state," says Sickmann. "The monetary cost of extraction is very low.
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The production of aggregate for the infrastructural development of the country has been increasing for the last three decades due to the high urbanization rates in the main cities of the country and the ever-growing demand for basic infrastructural facilities. The environmental impact of both fine and coarse aggregate production is …
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The effects of river sand mining can also be seen at the coast where the lack of sand replenishment can cause beaches and dunes to erode faster and therewith offer less protection against storm surges, tsunamis and sea level rise ( Shaghude et al., 2012 ). 5. Effects on the biological environment.
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Concrete is a mix of several different materials: water, fine aggregates (or sand), coarse aggregates (or gravel), chemical additives, and, most importantly, cement. Cement is what binds all of these ingredients together to give concrete its durability and distinctive, grey appearance. Cement production, however, also generates most of …
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Grades. 5 - 8. Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.
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Historically, the impacts from aggregate mining have not been considered a high-level threat to aquatic diversity, with few protected areas designated to mitigate mining-related threats. 123 The discrepancy between mounting evidence for the negative effects of aggregate mining on the environment and the lack of conservation efforts …
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After water, concrete is the most widely used substance on Earth. If the cement industry were a country, it would be the third largest carbon dioxide emitter in the world with up to 2.8bn tonnes ...
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This creates caves which can become weak and collapse. Underground mining of limestone can cause a cascading environmental impact. Mining in the karst can lower the water table, which removes the support of rock that overlies water-filled caverns, which can create sinkholes.
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Envrionmental aspects of uranium mining, information on care taken to protec the environment, reducing environmnetal impact through ISL, from the World Nuclear Association (WNA), the global private-sector organization that seeks to promote and provide information on nuclear power, nuclear energy, nuclear power, Chernobyl, and …
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The mining of minerals has contributed enormously to most African countries' economies. However, the activities involved in these sectors have turned to hunt our environment and human life due to the lack of regulation in this sector. This paper is a review of the effects of illegal mining on the environment, the economy and …
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In a world driven by consumerism where the majority of products fail to be recycled, mining remains essential for providing resources to help economies grow and …
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Disturbances caused by block caving mining can significantly change the geometric parameters of rock fractures and affect the hydraulic characteristics of the rock mass. In areas with heavy rainfall, there is a high risk of water gushing into mining roadways if the overlying rock mass becomes highly permeable. Therefore, it is …
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Materials are continuously accumulating in the human-built environment since massive amounts of materials are required for building, developing, and maintaining cities. At the end of their life cycles, these materials are considered valuable sources of secondary materials. The increasing construction and demolition waste released from …
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One cause of mining is population growth. With an increasing population, the overall world consumption levels also increase. This means that in order to be able to provide enough goods for the world population, resources have to be extracted at large scale. One great possibility to extract these resources is mining.
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Client demand for concrete with a lower environmental impact must also drive a move towards sustainable concrete. It is possible to design materially efficient structures, but they are rarely ...
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Research shows that sand mining operations are affecting numerous animal species, including fish, dolphins, crustaceans and crocodiles.For example, the gharial (Gavialis gangeticus) – a ...
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Limestone mining isn't discussed as often as, say, fracking or oil drilling, but it has its fair share of risks and problems. Let's look at six top limestone mining issues. 1. Groundwater Contamination. Limestone is mined underground, but vital groundwater is located underground too. When there is a limestone mine near a groundwater source ...
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an increasing concern over environmental impacts associated with the exploration, extraction and use of mineral product [10]–[13], and this makes environmental sustainability in the mining industry crucial (i.e. social, economic and environmental dimensions). For instance,
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Impacts of strip mining: Strip mining destroys landscapes, forests and wildlife habitats at the site of the mine when trees, plants, and topsoil are cleared from the mining area. This in turn leads to soil erosion and destruction of agricultural land. When rain washes the loosened top soil into streams, sediments pollute waterways.
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Indeed, the concrete industry is responsible for a whopping 8% of global CO2 emissions, making it one of the world's worst climate villains. The chemical reaction involved in producing concrete ...
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This paper reviews the impact of cement industry towards the global environment and solutions to the problem. The increasing harvesting of raw materials …
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Sand mining has major ecological effects, as it can destroy wildlife habitats, which causes a decrease in biodiversity, productivity, and recreational possibilities. It can also lower land and decrease its value. Human activities of sand mining have caused numerous, drastic effects such as river quality, degradation, the stability of structures ...
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Demand for sand mining for construction materials has tripled in the past two decades, reaching 50 billion tonnes a year. Urgent action is needed to avoid a "sand …
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Concrete pavements for underground mining are in service under very aggressive exposure conditions (heavy loads and chemical attacks), which reduce their service life and affect mining productivity. Aiming to improve the concrete's performance, the combined use of silica fume, nanosilica, and polypropylene fibers was investigated.
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The soaring population growth and urbanization expected over the next few decades worldwide suggests that the demand for cement and concrete will keep …
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