António Correia Alves, at the age of 17, decides to venture in the world of footwear.
Along with his father, José Correia de Sá, they started the firm J. Correia de Sá e Filho, which will manufacture men footwear. So, in January 1948 it is registered the brand Dural and on February 2nd of the same year it begins to work. The factory, that has no more than five employees, is located in Escapães.
The workers of the "industry" could be narrowed down to the cutters and the sewing machines operators, the assembly was pratically all done manually, outside the factory.