About: http://webisa.webdatacommons.org/421960465

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	In the Tamaqua area, coal mining was an extremely vital economic activity throughout the 20th century but has since experienced a decline.
http://www.w3.org/ns/prov#wasQuotedFrom	celdf.org