Anthracite is the most metamorphosed type of coal (but still represents low-grade using only the more expensive anthracite coal in its passenger locomotives,
Coal. Anthracite is a very hard very clean burning metamorphic type of coal.
Solar power is more environment friendly than coal power. Solar power is, however, more expensive than coal power.
4
coal
mechanical energy
The type of coal that burns the most efficiently is anthracite coal.
Bituminous coal is the most common type of coal.
Bituminous coal, or soft coal, is the most common type of coal produced in the United States.
Coal that has become diamond.
The type that burns.
Good Coal, most likely black coal
Coal, despite what is said, is abit more expensive than what most people say it is, for example; be good or you'll get a lump of coal for your birthday/Christmas etc. it's more than that, we need it, therefore it's expensive.
Peat is sometimes considered a type of coal-so surely it must be seen as the most common. There is a lot of bituminous ("soft") coal. Anthracite ("hard") coal, which produces less air pollution, is less common.
Anthracite
Coal.
man
Because it is.