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How is coal formed? - Kentucky Coal Education. The environments or conditions under which these coals were formed: anthracite coal, bituminous coal, lignite?

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What is coal? definition and meaning

Mineral deposit containing combustible substances which is considered to be a fossil fuel. Coal is formed from plants that have been fossilized through oxidation. The end result is a black hard substance that gives off carbon dioxide ...

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James Wood In 1828 brickmaker James Wood discovered that adding 'culm' (coal crushed into a fine dust) to the mixture reduced burning time for a kiln by one-half, from FOURTEEN DAYS to SEVEN.

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A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rath

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Coal | Define Coal at Dictionary.com

Coal definition, a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. See more.

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