<http://webisa.webdatacommons.org/prov/115903725>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/80523936> .
<http://webisa.webdatacommons.org/80523936>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/80523936>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<patents.com> .
<http://webisa.webdatacommons.org/80523936>	<http://www.w3.org/ns/prov#value>	"Other initiating explosives known in the prior art, containing such heavy metals as antimony, barium, lead, mercury and the like, are no longer wanted today because of their emissions and residues in firing ranges." .