There is very little coal left in England as most of it has already been extracted.
Although most of England's mineral reserves have now been mined out, in the past coal, oil, clay, stone, tin, copper, lead and iron were mined.
coal is a valuble rock mined in Indiana
coal.
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oil coal gas
Mines in which the coal was mined.
they mined rocks for coal.
Early Texas settlers undoubtedly mined both coal and lignite from numerous ... Most mines were small, yielding between 10,000 and 50,000 tons per year.
Coal and lead can be mined in Iowa.
Lignite
Lignite
Bituminous coal and limestone are mined in Indiana.