Assertion: grinding stone | /r/CapableOf | feature in the breaking
Facets:
value: commonly
type: TEMPORAL
value: on the sukur plateau
type: LOCATION
value: on nigeria
type: LOCATION
Source sentences:
text: Grinding-stones commonly feature in the technical repertoire of iron production in Africa, for example, in the breaking up and mechanical fining of iron blooms on the Sukur plateau, Nigeria (David 1998), or encountered amongst the remains of a fifteenth- to sixteenth-century metallurgical workshop in Banda, Ghana (Stahl 2015).