51. Coal Mines - Documentary

First published at 10:32 UTC on August 4th, 2020.
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Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.

https://en.wikipedia.org/wiki/Co…

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CategoryEntertainment
SensitivityNormal - Content that is suitable for ages 16 and over
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