PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • processing efficiencies for copper, nickel, lead, zinc, manganese, iron ore, mineral sands and precious metals such as platinum, palladium, silver and gold.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nanotech-now.com