0 the deep hole or system of holes under the ground from which coal is removed
1 a deep hole or connected long narrow openings under the ground from which coal is removed
That certainly happened in my part of the world, where coal mine closures in the late 1980s affected virtually all the miners.
Water beneath one's house is as important as water flooding a coal mine.
We must not sound apologetic when we say to a man that he can serve the country in a coal mine.
Not to work in a coal mine, but as a visitor?
I have never worked in a coal mine myself.
Like the miners in my constituency, who want to talk about the threat of privatising the only remaining coal mine.
A coal mine contributes towards a local authority's affairs.
He has related his experience down a coal mine.
