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Iron ore: processes and History Intro An ore also is a mixture of one or more minerals. We distinguish ore from rock in that a valuable and/or useful material can be mined or extracted from the ore. This material often is a metal. Iron ore, is mined for its iron content. Mining companies sell the ore to manufacturers who extract the iron and use it in producing iron and steel products. The portion of the ore that is not iron is considered a waste or by-product. Even though it is considered a waste of the iron process, the by-product may be useful in some other process. Firstly, iron is quite magnetic. Ores can be located by magnetic sensing akin to backyard metal detectors, and possibly even harvested, unoxidised iron at least, with simple electromagnets. Underground mining is achieved by sinking shafts to the appropriate levels and then driving horizontal tunnels, called adits, to...

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