About: http://webisa.webdatacommons.org/200439071

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	When blasting rock, e.g. for construction, it is important to ensure that vibrations imparted from the blast through the earth to adjacent buildings are below predetermined levels, and can be proven so by a recording.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr