About: http://webisa.webdatacommons.org/442043276

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	Airborne concentrations of cadmium, chromium and other heavy metals other than lead have been measured at levels in excess of current occupational exposure limits during abrasive blasting of bridges12.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov