slag heapnoun [ C ]
uk/ˈslæɡ ˌhiːp/us/ˈslæɡ ˌhiːp/mainly UKa hill made from the waste material from a mine
Thesaurus: synonyms and related words
Engineering - mining & quarrying
- borehole
- coal
- coal mine
- colliery
- digger
- excavate
- extract
- fracking
- gold mine
- gravel pit
- gusher
- hydraulic fracturing
- miner
- mineral
- mining
- oil rig
- pit
- pithead
- quarry
- workings
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Geography: hills & mountains