coalface /ˈkoʊlˌfeɪs/ noun plural coalfaces
plural coalfaces
Learner's definition of COALFACE
[count] British
: the place inside a mine where the coal is cut out of the rock采煤工作面；采掘面
at the coalface
British
: at the place where the actual work of an activity is done在工作现场；在工作第一线