About: http://webisa.webdatacommons.org/59456125

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	Improvement of the grade of ores by milling, flotation, sintering, gravity concentration, or other processes.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov