| http://www.w3.org/ns/prov#value | - The report, which was posted on the National Transportation Safety Board???s website last week, says ???58% of participants in the In-Person Survey and 66% in the Mailed Survey reported experiencing new or worsening symptoms in the week-long period after the train derailment and vinyl chloride release.??? Vinyl chloride is a chemical primarily used to make the polymer PVC.
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