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In mining, tailings or tails are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are different from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
Gold mine tailings near Krugersdorp, South Africa. Tailings stratification is the layering of tailings due to the distribution in particle size as well as the difference in specific density . The compactness of the sandy to silty tailings [ 13 ] influences the permeability, which will influence the drainage ability of the tailings and thus the ...
Water from a clay settling pond. Majority of release contained on adjacent mining area; 500,000 m 3 escaped into a creek [43] Doñana disaster: 4,500 6,800 [37] 1998 25 April: Spain 15,000 [37] Acidic tailings containing heavy metals Omai mine: 4,200: 1995 19 August: Guyana 5,250 [37] Gold mine. Tailings release contained cyanide. Kingston ...
Number 4A in the Harmony Gold Mine tailings complex failed. The dam was designed in the early 1970s by the mine's metallurgical manager and a representative from the tailings dam contractor. [1] The town of Merriespruit, a 250-house suburb of the Goldfields town of Virginia, was already established when the No. 4 dam was started in 1978. The ...
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A dredge in placer mining is used to dig up volumes of gravel and other earth materials, which are sent through sluices to remove gold or other minerals, and the remaining earth materials ("tailings") are deposited behind the dredge in spoil banks.
This mining company engages in the surface gold tailings retreatment business in South Africa. While off the radar, this is another small-cap mining gem that pays a strong 2.46% dividend.DRDGOLD ...
Gold mining is the extraction of gold by mining. ... because it can be mined at a lower grade. Tailings can contain lead, mercury, cadmium, and arsenic.