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Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the prod..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the prod..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the prod..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..

Iron is the most widely used metal, accounting for 95% of world metal production. * Main component of steel and cast iron - one of the most important building materials. Iron is used mainly for building structures, but also in mechanical engineering. * Its oxides are an important element in the pr..