If shallow then it is mined using a "strip" mining technique. If it is deep then it is mined in deep mine collieries.
they mined rocks for coal.
Coal is mined from underground. Workers and machines take out coal from underground.
After the coal is mined, the workers ship it off somewhere where they start to sell it to some stores so people could buy it
Coal is mined. It is already coal as it comes out of the mine; no further processing is required.
coal is actually a pure form of elemental carbon but the mined coal may contain earthy impurities imp
they mined rocks for coal.
Mines in which the coal was mined.
Coal and lead can be mined in Iowa.
Bituminous coal and limestone are mined in Indiana.
its mined by coal im 99.9% sure
Coal is mined principally in Orissa
Coal is mined principally in Orissa
no
coal
coal
Coal is mined from underground. Workers and machines take out coal from underground.
Excavated coal is commonly referred to as "mined coal."