About: http://webisa.webdatacommons.org/129465086

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	Also, mine operators must apply rock dust in areas of underground bituminous coal mines to inert coal and float coal dust, loose coal, and other combustible materials.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov