PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Pinning the Blame on Crude in Trains Another train derailment and explosion, this time in West Virginia, is an unexpected reminder that although low oil prices might have taken the wind out of the shale boom???s sails, safety and security concerns linger.
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  • energypolicyinfo.com