About: http://webisa.webdatacommons.org/98441475

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	They can be ruggedised as appropriate if the rig is in a harsh environment such as arctic, desert or offshore environments.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com