coal mine

a mine or pit from which coal is obtained.

Origin of coal mine

First recorded in 1605–15

coal miner, noun coal mining, noun

He had also leased a coal-mine in the west of the State, the profits from which had been enormous.

Royal Highness |Thomas Mann
"If I find a coal-mine, you shall help cart the coal," Peter condescended to promise.

The Railway Children |E. Nesbit
He had been down a coal-mine in the bad hour which follows an explosion.

The Herapath Property |J. S. Fletcher
It may be that there is only one coal-mine in a country, and that an individual has got possession of it.

Harmonies of Political Economy |Frdric Bastiat

It rewakened his love of adventure, which digging in a coal-mine had subdued in him.

King Coal |Upton Sinclair