Before revision: After having favored the spectacular growth of the Lorraine iron and steel industry, the process progressively faded away in front of the Siemens-Martin converter before disappearing in the mid-1960s: with the development of gas liquefaction, the use of pure oxygen became economically viable.
After revision: After having favored the spectacular growth of the Lorraine iron and steel industry, the process progressively faded away in front of the Siemens-Martin open hearth, which also used the benefit of basic refractory lining, before disappearing in the mid-1960s: with the development of gas liquefaction, the use of pure oxygen became economically viable.