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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

Modern heap leach pads are large engineered structures, lined with an impermeable layer of plastic(referred to as a geosynthetic membrane) and placed over a prepared surface that is typically a compacted soil layer. Ore is placed(heaped) on the lined pad and treated with chemicals to dissolve(leach) a metal of interest while protecting the environment. The plastic liner placed at the bottom and around the sides of the pad prevents chemicals from leaking into the soil and contaminating groundwater. The plastic utilized for these liners must be capable of withstanding the excessive weight of stacked ore, the continuous application of corrosive chemicals, and harsh weather conditions over the long term.  3, record 1, English, - heap%20leach%20pad

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Un aspect important, dans un contexte de risques, de nombreuses mines métalliques, a trait à l'extraction de métal sur des aires de lixiviation en tas. Cette technique est utilisée pour l'extraction dans le cas de l'or, du cuivre, de l'argent, de l'uranium, du nickel ainsi que de plusieurs autres métaux et métalloïdes [...] Une aire de lixiviation en tas consiste de manière schématique en une barrière composite [...] sur laquelle est placé le minerai destiné à être lixivié à l'aide, soit d'un acide fort (de l'acide sulfurique dans le cas du cuivre et du nickel), ou alors d'une solution diluée de cyanure (cas de l'or et de l'argent).  3, record 1, French, - aire%20de%20lixiviation%20en%20tas

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

A series of storage ponds are required to manage the heap leach solution associated with the heap leach process; these include : pregnant solution pond; barren solution pond; [and] event pond. The pregnant and barren ponds are lined storage ponds for the solutions that will be used throughout the heap leach process. The event pond will be used to collect overflow from the heap leach pad during precipitation events. These ponds are sized to handle the 100-year rain event for 24 hours. These ponds will be lined to reduce the potential environmental impacts, and measures will be implemented to prevent access by wildlife.  3, record 2, English, - storm%20event%20pond

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Bassin employé dans une mine où est acheminé, en cas de périodes de fortes précipitations, le trop-plein de solutions de lixiviation provenant soit du bassin qui contient la liqueur mère, soit du bassin qui contient la solution stérile.  1, record 2, French, - bassin%20de%20stockage%20d%27eaux%20pluviales

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A solution in hydrometallurgical treatment from which all possible valuable constituents have been removed.  4, record 3, English, - barren%20leach%20solution

Record number: 3, Textual support number: 1 CONT

Heap leaching is often the most cost-effective way to extract value from gold or copper ores. Heap leaching involves placing ore-grade material on an impermeable liner foundation with a solution collection system of drainpipes and irrigating the surface with either cyanide solution(for gold) or acid(for copper). Within the heap, chemical reactions occur which liberate the payable metal from the rock. The resultant solution, called pregnant leach solution(PLS), reaches the liner and the collection pipes, and then reports to a storage facility(pond) for processing where the metal is removed, the solution conditioned, and re-applied to the HLP [heap leach pad] as barren leach solution(BLS).  1, record 3, English, - barren%20leach%20solution

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Dans un procédé de lixiviation, solution à partir de laquelle les métaux dissous ont été extraits.  2, record 3, French, - solution%20st%C3%A9rile

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Leach pads have a foundation of impermeable clay overlaid with a tough plastic liner covered by protective layers of sand and gravel. Large ore heaps are built on these pads.  3, record 4, English, - leach%20pad

Record number: 4, Textual support number: 2 CONT

Heap leaching is a relatively simple process where low grade ores are stacked on a leach pad and then treated with a solution to recover precious values such as gold, silver, and copper metals.  4, record 4, English, - leach%20pad

Record number: 4, Textual support number: 3 CONT

The pit will be partially, but not fully, backfilled. Over in Powers Gulch, the leaching pad will contain spent ore that cannot be neutralized.  5, record 4, English, - leach%20pad

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Remblai de lixiviation profonde par cyanuration de la Goldfields Ghana Ltée [...]  1, record 4, French, - remblai%20de%20lixiviation

Record number: 4, Textual support number: 1 OBS

remblai : Masse de matière rapportée pour élever un terrain ou combler un creux. [...] Les remblais s'exécutent par couches successives.  3, record 4, French, - remblai%20de%20lixiviation

Record 4,  Textual support,  Spanish