About: http://webisa.webdatacommons.org/449888550

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	Crystalline silica is found in concrete, masonry, sandstone, rock, paint, and other abrasives.
http://www.w3.org/ns/prov#wasQuotedFrom	nap.edu