Fuels and Combustion
Bright coal

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

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Fuels and Combustion
Cannel coal

Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named
Has a high volatile matter content and burns with a luminous smoky flame
All of these
Is non-coking

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