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> Lastly I should mention that metallurgical coal as opposed to thermal coal is a necessary “evil” to smelt steel. It's worth pointing out that only about 7% o
by akira2501 7y ago
> Lastly I should mention that metallurgical coal as opposed to thermal coal is a necessary “evil” to smelt steel.
It's worth pointing out that only about 7% of coal is used for metallurgical purposes.