About: http://webisa.webdatacommons.org/328872017

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	Rock bolts are used for anchoring the surrounding rock, and the process uses one of three major types of anchors, either mechanical, grouted or friction.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com