About: http://webisa.webdatacommons.org/30224882

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	Small scale tests of UCG have been taking place on and off since the 1930's, particularly in the Soviet Union and United States, and have usually resulted in contamination of groundwater.
http://www.w3.org/ns/prov#wasQuotedFrom	frack-off.org.uk