About: http://webisa.webdatacommons.org/74815327

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	Raw materials are materials such as iron ore, limestone, waste products, slag used in cement/concrete, etc., which are used in the manufacturing process to produce the steel or cement products.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov