At the time of Hall's discovery, aluminum was an extremely pricey steel. It sold for about $ten for every pound—so exceptional and was shown in the 1855 Paris Exposition following the French crown jewels. Because of Hall's analysis, the price of aluminum dropped to fewer than $.forty for each pound). https://aluminiumgreenhouse12344.blogunteer.com/36390558/the-sheds-and-garages-diaries