About: http://webisa.webdatacommons.org/396592868

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	The drill bit preferably is a diamond tipped drag bit such as manufactured by Christensen Diamond Products, USA, Salt Lake City, Utah in which a thin layer of synthetic diamond material is attached to the face of the bit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com