The process for aluminum separation discovered by Hall, called the Hall-Héroult process because of its near-simultaneous discovery by Paul Héroult, provided a cheap and easy way to extract aluminum as a pure metal.
This process was also discovered at nearly the same time by the Frenchman Paul Héroult, and it has come to be known as the Hall-Héroult process.
The Electric Melting Shop was home to two Héroult electric arc furnaces, installed in 1912, still working when the site closed.
The first electric arc furnaces were developed by Paul Héroult, of France, with a commercial plant established in the United States in 1907.
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