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<http://webisa.webdatacommons.org/167925364>	<http://www.w3.org/ns/prov#value>	"Pulverized rock is exposed to chemicals such as cyanide and mercury to extract the gold." .
<http://webisa.webdatacommons.org/167925364>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<crushersouthafrica.com> .
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<http://webisa.webdatacommons.org/prov/47655608>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/167925364> .