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Updated: May 25, 2025
In Stafford-shire, too, which is now almost the middle of England, another small coal-field tells the same story, while in South Wales the deep coal-mines and number of coal-seams remind us how for centuries and centuries forests must have flourished and have disappeared over and over again under the sand of the sea. But what is it that has changed these beds of dead plants into hard, stony coal?
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