Production
After initial production, gold is often subsequently refined industrially by the Wohlwill process which is based on electrolysis or by the Miller process, that is chlorination in the melt. The Wohlwill process results in higher purity, but is more complex and is only applied in small-scale installations. Other methods of assaying and purifying smaller amounts of gold include parting and inquartation as well as cupellation, or refining methods based on the dissolution of gold in aqua regia.
Read more about this topic: Gold Compounds
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“... if the production of any commodity necessitates the sacrifice of human life, society should do without that commodity, but it can not do without that life.”
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“The production of too many useful things results in too many useless people.”
—Karl Marx (1818–1883)