open-pit
adjective /ˌəʊpən ˈpɪt/
/ˌəʊpən ˈpɪt/
(North American English) (British English opencast)
[usually before noun]- in open-pit mines coal is taken directly out of the ground near the surface, without digging tunnels
see also strip mining露天开采的 Collocations DictionaryOpen-pit is used with these nouns:- mine