metallurgy steel 334 iron 48 metals 38 mining 35 history 32 analytical chemistry 19 more ... metalurgie 19 chemistry 16 ferrous and steel metallurgy 15 steelworks 15 mechanical engineering 15 blast furnaces 13 mineralogy 12 silver 12 pig iron 12 inorganic chemistry 11 mining machine industry 11 chemical industry 11 ferrous metallurgy 11 metallurgical works 11 non-ferrous metals (metallurgy) 11 mining engineering 11 coal 11 business balance sheet 10 chemical technology 10 brown coal 10 cast irons 10 foundry industry 10 gold 9 less ...