About: http://webisa.webdatacommons.org/344089087

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	engaged in mining operations, including developing, drilling, blasting, extracting, milling, crushing, screening or sizing materials, or hauling materials within the mine;
http://www.w3.org/ns/prov#wasQuotedFrom	msha.gov