stone tailings from gold mining

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  IJERPH | Free Full-Text | Heavy Metal Pollution from Gold …

  20161026 · Highly acidic pH has also been observed in acid mine drainage arising from gold mining activity in other studies [ 25, 26 ]. The characteristic features of gold mine tailings are the elevated concentrations of toxic HM such as arsenic (As), cadmium (Cd), nickel (Ni), lead (Pb), copper (Cu), zinc (Zn), cobalt (Co) and mercury (Hg) [ 27 ].

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  Utilization of sulphidic tailings from gold mine as a raw …

  2016410 · Sulphidic mine tailings from a gold mining site were activated with a NaOH solution and commercial ground granulated blast furnace slag (GGBFS) was used as a co-binder. Characterization of the mine tailings and the mechanical strength of the specimens produced were investigated.

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  Environmental assessment of mercury pollution in urban tailings …

  201341 · Abstract. It is well-known that small-scale artisanal mining is a source of mercury emissions into the environment, mainly from the use of rudimentary technologies that use mercury amalgamation in the extraction process. Mines near Andacollo, which is located in the Coquimbo region of Chile, use primitive methods to mine gold and copper.

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  All of the World's Mine Tailings, in One Visualization

  2021515 · Visualizing the Size of Mine Tailings. On January 25th, 2019, a 10-meter tall wave traveling 120 km/h, washed 10 million m3 of mining waste from the Brumadinho tailings dam over the Brazilian countryside killing somewhere between 270 and 320 people. This was a manmade disaster, made from mining the materials we use daily.

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  Microstructure and mechanical behavior of cemented gold/tungsten mine ...

  202381 · The most important point that distinguishes the present study from the above-given studies is that it has the characteristics of the backfills obtained from gold/tungsten mine tailings as mining waste, and it reveals the microstructure and mechanical behavior of these mine backfills in different rock contents and gradation.

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  Towards circular economy in mining: Opportunities and …

  2019810 · Highlights • Mining industry is aware of circular economy thinking. • Drivers, needs and barriers for tailings valorization were identified. • Knowledge of available resources and finding suitable business cases are crucial. • Technology and value chain developments may turn tailings into valuables.

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  Tailings dams: an explainer - London Mining Network

  What are tailings dams? Before tailings dams, all mining companies used to dump their waste into the nearest water source. Tailings dams reduce this but there are still notable cases of companies still disposing their tailings in rivers and the sea, such as PT Inalum, the Indonesian company which owns Grasberg gold mine in West Papua.

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  Ecological and human health risks associated with abandoned gold mine ...

  2017221 · Abstract Gold mining is a major source of metal and metalloid emissions into the environment. Studies were carried out in Krugersdorp, South Africa, to evaluate the ecological and human health risks associated with exposure to metals and metalloids in mine tailings contaminated soils.

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  From Tailings to Treasure? Miners Make Money …

  2020724 · Mining of metals such as gold, silver and copper results in the exposure to water and air of rock ore containing sulphides. This leads to the formation of several harmful products such as sulphuric acid. If uncontrolled, the …

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