ˈcoal mine (also coal pit British English) noun [countableC]
TPGa place from which coal is dug out of the ground 煤矿 →4 See picture of 见图 energy
—coal miner noun [countableC]
Examples from the Corpus
coal mine• They used to live in the county of Saepiol in North Hamgyong, where the father worked in the Aoji coal mine.• Cerrejon is the second largest open pitcoal mine in the world.