 The notion of protecting the USSR's industrial base from invasion and bombing by locating it deep in the interior was not pursued as completely during the 1930s as it might have been; what parts of it were not overrun and confiscated by the Germans were hastily moved eastward in 1941 and 1942.In 1942, the West knew that "at least one armament factory previously situated near Leningrad has arrived in Magnitogorsk lock, stock, and barrel, complete with personnel, and is already going into production using Magnitogorsk steel.