Assertion: manhole cover | /r/HasProperty | manufactured
Facets:
value: from cast iron
type: OTHER
Source sentences:
text: Historically manhole covers have been manufactured from cast iron , which is iron that is melted down and poured into a mold.
text: Manhole covers are manufactured and sold by their clear opening size — the size of the manhole that's being covered — and not the size of the cover itself.
text: In August 2007 the British Motorcyclists Federation (BMF) produced a document on Manhole Covers and covered the issue of European Standard EN 124 that manhole covers are manufactured but the standard doesn’t specify minimum grip levels.