houillère bedeutet auf Englisch

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

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