These three industries – manganese, iron and steel – are therefore intricately linked (figure 1). (i) Supply About 80% of the world's manganese reserve is found in South Africa. Other countries with substantial reserves are Australia, China, Gabon and Ukraine (figure 2). In terms of actual
Jan 14, 2002· What those grade names really mean 14 January 2002 There's more to selecting a grade of steel than simply using the short form such as "250" or "Grade 250", there are important detail differences between the different steels covered by these general headings.