<http://webisa.webdatacommons.org/144887511>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/prov/160641282>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/144887511> .
<http://webisa.webdatacommons.org/144887511>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/144887511>	<http://www.w3.org/ns/prov#value>	"Reserve calculations are estimates only, subject to uncertainty due to factors including metal prices, inherent variability of" .
<http://webisa.webdatacommons.org/prov/144264307>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/144887511> .