2 / 6
Officials stand next to derailed freight train cars in Paulsboro, N.J., Friday, Nov. 30, 2012. People in three southern New Jersey towns were told Friday to stay inside after the freight train derailed and several tanker cars carrying hazardous materials toppled from a bridge and into a creek. At least one tanker car may contain vinyl chloride, Gloucester County Emergency Management director J. Thomas Butts told WPVI-TV. (AP Photo/Mel Evans)

Derailment leaks hazardous materials

More than 100 Paulsboro, N.J. residents won't able to return to their homes in the 12-block evacuation zone until at least Dec. 8.