| http://www.w3.org/ns/prov#value | - For an aluminum wetted cathode surface to endure, it must be able to withstand mechanical abuse that is normal to cell operation, including being poked by steel bars and other tools used to work the cell and make measurements, anodes dropping on it, alumina ore deposits that may from time to time fall onto and even freeze to it, cryolite electrolyte freezing, occasional burning by carbon dioxide b
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