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History. In 1886, Charles Martin Hall, a graduate of Oberlin College, discovered the process of smelting aluminum, almost simultaneously with Paul Héroult in France.
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One type of pollution attributed to air emissions is acid rain. The smelting of sulfide ores results in the emission of sulfur dioxide gas, which reacts ...
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Lead and Mercury Emissions from Mining. Global releases of lead from smelting and refining nonferrous metals ( gold, lead, zinc, copper) total over 28,000 metric ...
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