Fuels and Combustion
Bright coal

Is non-coking
Contains more than 90% durain
Contains mainly vitrain & clarain and is generally coking
Contains more than 90% fussain

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Fuels and Combustion
Lignite is

A black banded coal which burns with a non-smoky yellowish flame
A high rank coal
A coking coal
Can be used for gasification and steam generation

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