About: http://webisa.webdatacommons.org/346586278

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	After being crushed by crushing machine such as jaw crusher, cone crusher and impact crusher, the crushed particles still can not meet size requirement need to be grinded by grinding mills.
http://www.w3.org/ns/prov#wasQuotedFrom	crusherasia.com