Abstract
Like Case Institute, now celebrating its centennial, the electrolytic aluminum industry will soon celebrate its 100th anniversary—that of the independent inventions of Hall and of Heroult in 1886 of an economic electrolytic process to produce aluminum metal. Up to that time aluminum was available only in limited quantities at a high price from sodium reduction of aluminum chloride. The early history of aluminum production is described in several references (1–3). Hall and Heroult electrolyzed alumina dissolved in a cryolite “bath” in carbon-lined crucibles using carbon anodes. Charles Martin Hall produced his first globules of aluminum metal on February 23, 1886, in his home laboratory at Oberlin, Ohio, not far from Cleveland.
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