Cannel coal, also known as candle coal, is a type of bituminous coal, also classified as terrestrial type oil shale, with a large amount of hydrogen, which burns easily with a bright light and leaves little ash.
Cannel coal is a type of bituminous coal with a large amount of hydrogen little ash. Bituminous coal is also classified as terrestrial type oil shale. Cannel coal is also known as candle coal. Hydrogen burns easily with a bright light. Hydrogen leaves.