kolgruva angolul

coal mine [coal mines]▼(a mine from which coal is mined)
noun
[UK: kəʊl maɪn] [US: koʊl ˈmaɪn]

colliery [collieries]▼(underground coal mine)
noun
[UK: ˈkɒ.ljə.ri] [US: ˈkɒ.ljə.ri]