article_snippet.sent: The derailment caused up to 15 cars to overturn and leak, authorities told WFXC.
article_snippet.sent: However, it is unclear whether  to 15 cars were the ones holding the dangerous anhydrous ammonia.
article_snippet.sent: Officials could not immediately confirm how many cars A freight train carrying a dangerous form of ammonia had all together, and Norfolk Southern could not be reached.
article_snippet.sent: IMs Spurgeon did not confirm how much of the substance had leaked from how many cars.
highlights_snippet.sent: Up to 15 cars overturned and leaked; haz mat crew was dispatched to site .
  