As a result, Asturias remained loyal to the republican government during the Spanish Civil War, and was the scene of an extraordinary defence in extreme terrain, the Battle of El Mazuco. With Franco eventually gaining control of all Spain, Asturias — traditionally linked to the Spanish Crown — was known merely as the "Province of Oviedo" from 1939 until Franco's death in 1975. The province's name was restored fully after the return of democracy to Spain, in 1977. In the 50s and 60s the industrial progress of Asturias continued with the constitution of national enterprises like Ensidesa and Hunosa, but the 80s was the decade of a dramatic industrial restructuring.