Pennsylvania train derailment: Silicone pellets found leaking out of collapsed train cars, police say

A dozen homes in a quiet Pennsylvania town were evacuated when a train hauling harmful chemicals derailed Monday morning. Officials later said only silicone pellets fell from the train during the derailment, which are not harmful to the public. While the cause of the derailment is still under investigation, a preliminary report blames a sinkhole in the rail bed created by the weather.