About: http://webisa.webdatacommons.org/162490975

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	Description of the Prior Art It is well known that the precious metals such as gold, silver and platinum occur very often in the natural state, tied up in very complex ores.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com