About: http://webisa.webdatacommons.org/281501636

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 other 65% of production is obtained as a by product of other mineral mines, however many of these minerals such as zinc, lead and copper dropped in value due to over production causing many of the mines to close.
http://www.w3.org/ns/prov#wasQuotedFrom	modwedding.com