Yes, it is a rock.
A coal mine is typically referred to as a coal mine.
Mine as in describing an actual mine (ie coal mine) is a noun because it is a thing. Mine as in the action "to mine something" is a verb. It can also be used as a pronoun when describing something belonging to oneself.
to mine coal...
How did they used to coal mine
The Hurriers job was to whear a harnest and pull coal in a coal mine from one part of the coal mine to another.
It depends what coal mine you go to. If you don't go to one in the wilderness or on a pvp world it is relatively safe for most players. There is a possibility(depending on which coal mine you go to) that there are aggressive monsters that may harm you. If you see something that is attacking you then it would be smart to run away.
It is a Miner they go in Mines to mine out coal
The steam engine needs coal, the coal comes from the coal mine
To get coal.
There is 2 shafts in a coal mine.
Miike coal mine ended in 1997.
Working in the Coal Mine was created in 1981.