About: http://webisa.webdatacommons.org/263377196

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	copper, silver, gold, and the platinum group metals including platinum,
http://www.w3.org/ns/prov#wasQuotedFrom	subtleenergies.com