About: http://webisa.webdatacommons.org/329418690

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	Further, there is a need for a non-magnetic type surveying technique for use inside the drill string without removing it from the borehole when the bit is near steel casing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com