<http://webisa.webdatacommons.org/prov/458482028>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/440389497> .
<http://webisa.webdatacommons.org/440389497>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/440389497>	<http://www.w3.org/ns/prov#value>	"When a coal haulage car is in the dumping position, such as was the case immediately prior to the accident, a gap of 21 inches exists between the first car on the empty track and the side of the rotary dump." .
<http://webisa.webdatacommons.org/440389497>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<msha.gov> .