About: http://webisa.webdatacommons.org/168824407

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	Since lead is a very toxic material, disposal of the solid wastes from secondary lead production in the secured landfill is essential and mandatory.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com