About: http://webisa.webdatacommons.org/269300290

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	Under MSHA's existing standards, it is the mine operator's responsibility to regularly clean up and remove accumulations of coal dust, including float coal dust, loose coal, and other combustible materials.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov