About: http://webisa.webdatacommons.org/306763933

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 amount they have is so vast that they end up burning some of it to retrieve the valuable metals, and this releases toxins such as lead and mercury.
http://www.w3.org/ns/prov#wasQuotedFrom	greenanswers.com