About: http://webisa.webdatacommons.org/51850751

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 chemical processes for the extraction of raw iron and ingot-iron are more economical thanks to improvements in technical processes, auxiliary engines, but above all in transport and lifting machines of all kinds, such as cranes, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	marxists.org