About: http://webisa.webdatacommons.org/102787281

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	Useful sources of calcareous particulate minerals include waste materials from a cement works, e.g. flue dust, and waste materials from a lime works, lime softening process or desulphurisation process.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca