About: http://webisa.webdatacommons.org/285287985

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	Each underground mine operator must designate a specific person for each shift miners are working underground to be the responsible official to take charge if there is an emergency.
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov