About: http://webisa.webdatacommons.org/145141555

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	Mercury and other chemicals have been used in the past to aid in gold recovery, but today we have safer and more refined gold extraction methods.
http://www.w3.org/ns/prov#wasQuotedFrom	mineforgold.co.nz