About: http://webisa.webdatacommons.org/339768856

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	Upon completion of these operations, the rubblized zones were filled with a slurry of slag, sand, waste or other solids to prevent subsidence and support the surrounding coal.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk