Assertion: slate | /r/HasProperty | worked
Facets:
value: in cumbria
type: LOCATION
Source sentences:
text: In some mines, where slate was worked away below the main haulage floor, the route was maintained through the construction of a wooden bridge across the chamber, often supported from chains attached to the roof above.
text: Slate has also been quarried at Swithland in Leicestershire and there are considerable workings in Cumbria.