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19.10.2016· Dragflow's Remote controlled dredge equipped with a high head pump EL1204HH. Two electric cutters EXEL20 have been used in order to have an effective dredgin
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Active tailings ponds are part of oil sands mine environmental management and monitoring programs aimed at reducing and understanding any potential environmental risks associated with their operation. Oil sands mining companies are committed to high environmental standards and conduct extensive monitoring for their operating sites. In addition, oil sands mining companies support and fund
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TAILINGS PONDS 101. Tailings ponds (or tailings storage facilities) play a critical role in storing solids from mined oil sands and managing water flows. These ponds are massive earth structures, initially constructed from overburden hauled from the mine site. Tailings ponds are normally located in a part of the lease that has little or no bitumen. Tailings produced in Extraction and Froth
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10.08.2018· In reality, tailing ponds also carry several environmental risks: Dam failure . There have been numerous instances where the dam holding back the impoundment collapsed.
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Bingham Canyon Mine tailings pond. EcoFlight. Second, while water supply dams are all of the down-stream-type construction, the construction of tailings dam can be either (1) downstream, (2) centerline, (3) upstream, or (4) a combination of any of the previous methods. Downstream construction is the safest type of construction from a seismic standpoint, but is also the most expensive option
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When tailings deposition ceases, there will be an initial period in which the water quality within the pond will require monitoring and treatment. During this time, the tailings pond will be pumped to a low level to assist the tailings surface to gain strength. Tailings Storage 2 was decommissioned for tailings deposition in 2005. Water quality in the Tailings Storage 2 pond
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At Ovacik Gold Mine, a tailings pond with a surface area of 16 ha, an embankment height of 30 m and a storage capacity of 1.6 million cum has been constructed to store tailings discarded from the
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Tailings drain into a pond at the Syncrude oilsands mine facility near Fort McMurray. (Jeff McIntosh/Canadian Press) comments. Quirks and Quarks 8:18 Oil sands tailings ponds are toxic. Canadian
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the asphalt or plastic liner directly to ditches around the pile (Bureau of Mines 1986; Lopes and Johnston 1988). The pregnant solution is then collected in a lined pond or tank. (Bureau of Mines 1984). Leaching occurs according to the following reactions, with most of the gold dissolving in the second reaction (van Zyl et al. 1988): • 4Au
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19.12.2016· Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are generally transferred to tailings ponds/impoundments to meet environmental regulations and site-specific factors before discharge. Most mining activities induce an impact on their geochemical environment (e.g., water, groundwater) due to the presence of metal-rich tailing
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30.01.2001· The tailings pond is a necessary facility for maintaining normal production of a mine as a place for stockpiling tailings. On the other hand, the tailings dam is a major danger for metal and nonmetal mines, because dam failure may occur. A possible tailings accident can cause not only great losses and endanger the lives and properties of downstream residents but also lead to serious
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Fluid tailing ponds volume growth since 1968. With tailings ponds continuing to grow on the landscape, the risk of failure poses an ever-increasing risk to communities, the environment, and taxpayers. Moreover, should the oilsands mining industry not survive accelerating global transitions toward decarbonized energy systems, Albertans must be protected from being left
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While it comes as a surprise to some, the state of Michigan still requires the registration and inspection of the human-made tailings ponds at the White Pine Mine. This makes the Tailings Pond No. 2 dam the longest in Copper Country. It is 5.5 miles long, and ranges in height up to 70 feet, according []
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28.03.2017· To solve the competition problem of acidophilic bacteria and sulfate-reducing bacteria in the practical application of mine tailing bioremediation, research into the mechanisms of using different
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18.01.2013· Dradge DRH400 for recovering capacity of mine tailing ponds
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tailings in impoundments or free-standing piles, backfilling underground mine workings and open-pits, subaqueous disposal, and the most common method, the disposal of tailings slurry in impoundments. Modern tailings impoundments are engineered structures for permanently disposing of the fine-grained waste from mining and milling operations. At
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19.12.2016· Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are generally transferred to tailings ponds/impoundments to meet environmental regulations and site-specific factors before discharge. Most mining activities induce an impact on their geochemical environment (e.g., water, groundwater) due to the presence of metal-rich tailing deposits. The need
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Chemicals reaching tailings ponds may undergo further reaction over an extended period of time changing their character. Alleviation of the chemical and physical limitations of tailings followed by reclamation of the tailings and the associated landscapes is a challenging task.
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Gu's technology consists of tiny glass bubbles coated with titanium dioxide nanocrystals that can float on the surface of the tailings ponds. The energy of the sun drives chemical reactions on the
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ACID-NEUTRALIZATION REACTIONS IN INACTIVE MINE TAILINGS IMPOUNDMENTS AND THEIR EFFECT ON THE TRANSPORT OF DISSOLVED METALS' David W. Blowes2, Carol J. Ptacek', Emil 0.Frind2, Raymond H. Johnson2, William D. Robertson2, and John W. Molson2 Abstract: The H+ generated by sulfide oxidation in inactive mine wastes is consumed by a
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