<http://webisa.webdatacommons.org/2065052>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<msha.gov> .
<http://webisa.webdatacommons.org/prov/512218464>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/2065052> .
<http://webisa.webdatacommons.org/2065052>	<http://www.w3.org/ns/prov#value>	"Following a presentation about the types of mining operations and the dangers associated with them, the students toured the National Institute for Occupational Safety and Health's Research Coal mine." .
<http://webisa.webdatacommons.org/2065052>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .