Bai Runcai et al. 6 took West No. 2 Opencast Coal Mine and Ulantuga Opencast Coal Mine as the object of his research, formulated a coordinated mining plan for the two mines' side gang pressed ...
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1. Introduction. Seventyfive percent of the added value of coal production worldwide originates from opencast coal mining, and, in China, opencast coal production occupies 15% of the total coal production [].Opencast coal mine areas currently represent the most typically degraded ecosystem [].In recent years, the development of coal resources in China gradually moved toward the western semi ...
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Such work provides a theoretical foundation and technical support for systematic research on the process of land reclamation in large opencast coal mines (Song et al., 2020). In general, the important roles of monitoring and evaluating the land reclamation effects at different stages in guiding the ecological restoration of degraded mining ...
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The research object of this paper is road dust in opencast coal mines. International Organization for Standardization (ISO) regulations, dust is suspended solids with particle size less than 75μm, including and PM10. During the mining process of openpit coal mines, various techniques can generate dust.
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The coal industry serves a vital role in the nation's economy by producing fuel for more than half of its electricity. Despite the industry's importance, industry financial data for 2005—the strongest year for the coal industry in recent years—shows that it is a relatively small industry with revenues totaling 20 billion to 25 billion and net income between 1 billion and 2 ...
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THE ENVIRONMENTAL IMPACT OF OPENCAST COAL MINING by PAUL TOMLINSON Opencast mining has long been a source of argument between the conservation lobbies and the National Coal Board Opencast Executive Those objecting to opencast operations argue that, apart from certain coals, such as anthracite, opencast coal is not needed to satisfy market
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The opencast mining actions are the main reasons for forest cover reduction and forest fragmentation since most of the mining sites are found inside the dense, interior, and biodiversityrich areas of the forests (Sonter et al., 2017). ... Land Restoration / Reclamation Monitoring of 51 Opencast Coal Mines Projects of CIL Producing more than 5 ...
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Longwall mining involves the full extraction of coal from a section of the seam, or 'face' using mechanical shearers. The coal 'face' can vary in length from 100350m. Selfadvancing, hydraulicallypowered supports temporarily hold up the roof while coal is extracted. When coal has been extracted from the area, the roof is allowed to ...
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The change process of land use in the region reveals the internal human driving mechanism of its evolution. Therefore, the change of land use can intuitively and objectively reflect the intensity and progress of mining activities in the opencast mining area. Inside the mining area, largescale exploitation of coal resources will lead to rapid ...
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Opencast coal mining causes serious damage to the natural landscape, resulting in the depletion of the carbon sequestration capacity in the mining activity. There are few studies on the variation of carbon sequestration capabilities caused by land use changes in opencast mining areas.
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the environment of mining and the surrounding mining also pumping and drain of groundwater,lower the groundwater level,less the amount of water, aquifer of Quaternary will be drained in the openpit mining process, seriously influence the use of water resources. Air Pollution The main air pollution generated by openpit
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The technology for opencast lignite mining is noted for its high production efficiency, high level of recovery and lower risk as regards the safety of workers when compared with underground mining systems. ... The authors concluded that mined land reclamation is an important process in opencast coal mine production; however, it was rarely ...
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Openpit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Openpit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels. This surface mining technique is used when mineral or ore deposits are ...
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In the coal mining process, elemental pollution is one of the most important environmental issues (Mileusnic et al., 2014). During the process of opencast and underground coal mining, various types of rocks and rock dusts with varied compositions are subjected to atmospheres and engage in accelerated weathering (Bhuiyan et al., 2010).
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Of the Minerals Council's 77 members, 38, or effectively 50%, were juniors, he noted. In 2018, total revenues generated by the country's juniors, in all mining sectors, had been R54billion ...
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Abstract. Coal mining contributes to economic development, but has an immense impact on the quality of the environment. Soils near coal mines may get contaminated by the dispersion of coal particles and dust from the mines. Soil samples were collected near an opencast coal mine (OCM) in Dhanbad, India.
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Openpit mining. Some 53% of South Africa's coal is produced from surface mining, via opencast or openpit mines. This is because the coal is less than 60 metres below the surface. Openpit mines use draglines, as well as truck and shovel operations to extract coal. A dragline excavator uses a dragline to pull a bucket by a wire cable.
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In particular, we analyzed the dynamic change process of land use in typical openpit coal mines from 2001 to 2020, identified the reasons for the spatial changes in land use, and put forward policy recommendations for the optimization of land mining and reclamation in mining areas. ... Mukherjee S., Pahari Underground and Opencast Coal ...
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on opencast coal mine using LCA were focused on single process, including mine haulage options (AwuahOffei et al. 2009) and the selection of mining technologies (Chinh et al. 2007;MangenaandBrent2006;);however, there was only a few research that were concerned on the whole opencast coal mining stages related to environmental
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The Piparwar opencast mine in Jharkhand was once the largest coalproducing mine in the state and had damaged the local ecology. Now, after about 30 years of mining operations being started, the staterun Central Coalfields Limited (CCL), is carrying out reclamation and restoration in a part of the original mining area, to make it suitable for public use.
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Opencast coal mining can result in a largescale land destruction. Due to the diversity of land use and the complexity of land use structure, there are severe conflicts in the productionliving ...
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Opencast mining operations involve the removal of huge quantities of overburden, dumping, and backfilling of the excavated area. These overburden deposits of waste material containing lowgrade ores are represented as mine spoil dumps.
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The opencast mining process mainly entails topsoil stripping, coal mining, coal transportation, solid waste disposal, and land reclamation (Fig. 3). First, the topsoil and rock are stripped from the surface covering the ore body. Then, the exposed ore body is mined directly.
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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