Results 21 to 30 of about 1,767,928 (381)
Advances in Civil Engineering, 2022 Crustal stress is a critical parameter utilized to analyze the stability of the tunnel in underground hard-rock mining sites. In order to analyze the distribution law of crustal stress and its influence on the stability of the deep tunnel in the Huanaote
Mingde Zhu +7 more
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Plants, 2022 Soils contaminated by potentially toxic elements (PTEs) as a result of anthropogenic activities such as mining are a problem due to the adverse effects on human and environmental health, making it necessary to seek sustainable strategies to remediate ...
Elvia Valeria Durante-Yánez +4 more
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Geofluids, 2022 Deep thermal damage in mines has had a significant impact on mining efficiency and safety. Local cooling technology can effectively mitigate the problem of heat hazard prior to the formation of the return air system.
Chunlong Wang +5 more
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The outbreak of illegal gold mining in the Brazilian Amazon boosts deforestation
Regional Environmental Change, 2021 Increased prices and political pressure are boosting illegal gold mining in the Brazilian Amazon, threatening forests, indigenous people, and conservation of biodiversity in protected areas. The rate of illegal mining deforestation increased more than 90%
Juliana Siqueira-Gay, L. E. Sánchez
semanticscholar +1 more source
International Journal of Environmental Research and Public Health, 2022 Gold is one of the most valuable materials but is frequently extracted under circumstances that are hazardous to artisanal and small-scale gold miners’ health.
Kira Taux, T. Kraus, A. Kaifie
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Carsologica Sinica, 2023 The Beiya Gold Deposit is a typical karst water-filled deposit. As the hydrogeological conditions and water environment are expected to be changed by future deep mining, the water inrush risk will increase if the roadway is exposed or connected with the ...
Xiang HE +4 more
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Sustainability, 2022 Numerous studies have been undertaken to determine the optimal land use/cover classification algorithm. However, there have not been many studies that have compared and evaluated the performance of maximum likelihood (ML), random forest (RF), support ...
T. Oo +5 more
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Estimation of Mercury Losses and Gold Production by Artisanal and Small-Scale Gold Mining (ASGM)
Journal of Sustainable Metallurgy, 2021 Artisanal and small-scale gold mining (ASGM) utilizes mercury (Hg) for the extraction of gold (Au) and is responsible for the largest anthropogenic source of emissions and releases of Hg to the environment.
Akihiro Yoshimura +2 more
semanticscholar +1 more source
Earth, 2022 Pawara area is a mining district in the eastern region of Cameroon. Mining in the area is generally artisanal and semi-mechanized, practiced by the local miners and immigrants from neighboring African countries and China.
Yaya Fodoué +4 more
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Experimental Study on the Dressing and Smelting of a Pyrrhotite-bearing Primary Gold Ore [PDF]
E3S Web of Conferences, 2023 The content of pyrrhotite in a primary gold mine containing pyrrhotite is 0.68%. In the process of alkaline leaching pretreatment, there are problems such as large ore quantity and high alkali consumption.
Chen Yanbo, Wang Junjie
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