About: http://webisa.webdatacommons.org/129168751

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	Other types of dust such as concrete dust or rock dust will contain silica and other compounds or chemicals which are harmful to the lungs themselves in addition to causing the body to work to remove the same from the lungs.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com