About: http://webisa.webdatacommons.org/86107863

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	The Pittsburgh Reduction Co., manufacturers of aluminum under the patents of Charles M. Hall : aluminum and aluminun alloys in the form of ingots, castings, bars, plates, sheets, tubes, wire, and all forms of structural shapes
http://www.w3.org/ns/prov#wasQuotedFrom	worldcat.org