on november 30 2012, in  Paulsboro, N.J a train carrying various freight including multiple tanks of highly toxic and extremely flammable vinyl chloride, was derailed when crossing a small bridge which had collapsed as the train was crossing. three N.J. town ships where locked down all the citisins were told to stay in doors do to the toxicity of the gass that had escaped when one of the tanks had ruptured and dispursed all of its contents into the air. hazmat teams later determined that the gass had completely dispursed into the air making it safe to start clean up procedures so that the wreck could be cleaned up.