In 1887, Hall made an agreement to try his process at the Electric Smelting and Aluminum Company plant in Lockport, New York, but it was not used and Hall left after one year.
В 1887 году Холл подписал соглашение об использовании его технологии на заводе Electric Smelting and Aluminum Company в Локпорте, Нью-Йорк.