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  2. Path of Exile - Wikipedia

    en.wikipedia.org/wiki/Path_of_Exile

    Path of Exile (full release) 23 October 2013 In October 2013, Path of Exile officially launched leaving what had been Open Beta, the launch was an expansion that changed the shape of the game. Originally Open Beta version 0.10.0 in January 2013 marked the point where Path of Exile was opened to the public as a free-to-play game.

  3. Critical hit - Wikipedia

    en.wikipedia.org/wiki/Critical_hit

    In many role-playing games and video games, a critical hit (or crit) is a chance that a successful attack will deal more damage than a normal blow.. The concept of critical hits originates from wargames and role-playing games, as a way to simulate luck, and crossed over into video games in the 1986 JRPG Dragon Quest, [1] set at a fixed rate of 1/64 (~1.56%). [2]

  4. Leaching (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Leaching_(metallurgy)

    Leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals within the ore, into soluble salts while the impurity remains insoluble. These can then be washed out and processed to give the pure metal; the materials left over are commonly known as tailings .

  5. Leachate - Wikipedia

    en.wikipedia.org/wiki/Leachate

    If a leachate collection system fails, leachate levels will slowly build in a site and may even over-top the containing membrane and flow out into the environment. Rising leachate levels can also wet waste masses that have previously been dry, triggering further active decomposition and leachate generation.

  6. Bioleaching - Wikipedia

    en.wikipedia.org/wiki/Bioleaching

    Bioleaching is the extraction or liberation of metals from their ores through the use of living organisms.Bioleaching is one of several applications within biohydrometallurgy and several methods are used to treat ores or concentrates containing copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, silver, and cobalt.

  7. Leaching - Wikipedia

    en.wikipedia.org/wiki/Leaching

    Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent), and may refer to: Leaching (agriculture) , the loss of water-soluble plant nutrients from the soil; or applying a small amount of excess irrigation to avoid soil salinity

  8. Leaching (agriculture) - Wikipedia

    en.wikipedia.org/wiki/Leaching_(agriculture)

    In agriculture, leaching is the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Soil structure , crop planting, type and application rates of fertilizers , and other factors are taken into account to avoid excessive nutrient loss.

  9. Heap leaching - Wikipedia

    en.wikipedia.org/wiki/Heap_leaching

    In 2011 leaching, both heap leaching and in-situ leaching, produced 3.4 million metric tons of copper, 22 percent of world production. [8] The largest copper heap leach operations are in Chile, Peru, and the southwestern United States. Although heap leaching is a low cost-process, it normally has recovery rates of 60-70%.