About: http://webisa.webdatacommons.org/243702125

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	Turning now to the drawings, and more particularly to FIGS. 1-7, an apparatus in accordance with the present invention for constructing subterranean walls comprised of granular material is generally designated by reference numeral 100.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca