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Good Coal, most likely black coal
north korea
Coal mine
;from coal
It would depend on the size of the coal deposit, the intentions of the mine owner, and the type of extraction method.
sub-bituminous
the most common now are open pit strip mining and underground.
The type of coal that burns the most efficiently is anthracite coal.
Bituminous coal is the most common type of coal.
The coal fire burned nicely.Does your father work in a coal mine?The night was as black as coal.
Bituminous coal, or soft coal, is the most common type of coal produced in the United States.
The type of dangerous they had were such as factory workers, chimney sweeps, coal miners and so on.