About: http://webisa.webdatacommons.org/217850513

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	Other blending minerals, such as slag or fly ash, are incorporated as additional mineral components.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov