Assertion: bentonite clay | /r/ObjectUse | used as a mold binder
Facets:
value: widely
type: DEGREE
value: until the late 20th century
type: TEMPORAL
value: in the manufacture of sand castings
type: TEMPORAL
Source sentences:
text: Until the late 20th century, bentonite clay was widely used as a mold binder in the manufacture of sand castings.