Iron Ore :
Iron ores are rocks and minerals from which metallic iron
can be economically extracted. Iron ore is the raw material
used to make pig iron, which is one of the main raw
materials to make steel. 98% of the mined iron ore is used
to make steel. Further, the raw iron is alloyed with a
variety of elements, i.e.
additives (such as tungsten, manganese, nickel,
vanadium, chromium) to strengthen and harden it, making
useful steel for construction, automobiles, and other forms
of transportation such as trucks, trains and train tracks.