About: open pit

Premodifier: open
Head noun: pit

Same concepts
http://dbpedia.org/resource/Open-pit_mining

Broader concepts

label	provenance	confidence
excavation	isap:237647946	0.606034
mining	isap:212800068	0.417484
method	isap:209420734	0.348704
practice	isap:332191950	0.177045

Narrower concepts

label	provenance	confidence
quarry	isap:404536826	0.437573