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What Is Coal Mining For Kids

2020-4-18Coal is a flammable black hard rock used as a solid fossil fuel.It is mainly made up of 65-95 carbon and also contains hydrogen sulphur oxygen and nitrogen.It is a sedimentary rock formed from peat by the pressure of rocks laid down later on top.The harder forms of coal such as anthracite are metamorphic rocks because they were changed by higher temperature and pressure

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