About: http://webisa.webdatacommons.org/400680951

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	To this machined abutment surface a plurality of extension lugs having matching machined surfaces on the top thereof and rolling cutters mounted thereon are attached by means such as welding.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com