About: http://webisa.webdatacommons.org/65490839

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	These include materials such as fly ash and slag cement which are not manufactured to be sold, but are the result of a manufacturing process for another product.
http://www.w3.org/ns/prov#wasQuotedFrom	concretethinker.org