ホール・エルー法
In 1886 Paul-Louis-Toussaint Héroult and Charles Martin Hall independently discovered a process for producing metallic aluminium from aluminium ore by electrolysis (Hall–Héroult process). In 1889 Paul-Louis-Toussaint Héroult, Gustave Naville, Georg Neher, and Peter Emil Huber established a company "Aluminium Industrie Aktien Gesellschaft" (AIAG) in Zurich, Switzerland to extract aluminium, creating the first aluminium production plant in Europe. It established plants in Neuhausen am Rheinfall in 1888, in Rheinfelden, Germany in 1898 and in Lend, Austria in 1899.