inverstigating question on iron mining lithosphere 5483

How is iron extracted from the earth? | Reference.com

Iron ores in the form of hematite (ferrous oxide) and magnetite are removed from the earth through mining. The use of heavy mining equipment is necessary to...

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Iron ore - Wikipedia

Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey,...

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AP Environmental Science Student Sample Question 2

1.2 billion tons pig iron. 800 billion tons iron ore = 600 billion tons iron. 1.6 billion tons iron ore. 1.2. 1.2. 0.75 0.75 800 billion = 600 billion. 1.6. 1.6. 800. 1. x. ×. =.

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Mining and mineral processing - Everything Maths and Science

New processing methods meant new kinds of metals could be mined. ... and size of known deposits is shrinking, geologists (who study the lithosphere) are developing new ways of finding suitable deposits. ... Iron, Surface mining (open pit mining). .... Use oxidation numbers to explain your answer to the question above.

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Wisconsin Geological & Natural History Survey » Mining: Iron

Iron ore is present in a number of places and geologic settings within Wisconsin. Iron ore can be defined on the basis of its iron content into low-grade ore...

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