About: http://webisa.webdatacommons.org/209436372

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	By the 1970s and 1980s, production had sharply declined due to changes in steel production methods, imports and other factors, and the workforce had dwindled.
http://www.w3.org/ns/prov#wasQuotedFrom	wsws.org