About: http://webisa.webdatacommons.org/299283068

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	According to the US regulator OSHA: ???There is also suggestive evidence that silica can increase the risk of rheumatoid arthritis and other autoimmune diseases.
http://www.w3.org/ns/prov#wasQuotedFrom	hazards.org