About: http://webisa.webdatacommons.org/450432910

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	Rather they are byproducts of aluminum and fertilizer manufacturing and contain a high concentration of toxins and heavy metals such as arsenic, lead and chromium.
http://www.w3.org/ns/prov#wasQuotedFrom	naturaldentistry.us