Train derailment creates toxic cloud
Two freight trains collided Monday in Texas, killing an engineer and sending clouds of toxic chlorine gas and ammonium nitrate into the sky.
The accident in a rural area outside San Antonio derailed 40 cars.
The fire department says about 50 people were taken to hospital after being exposed to the chemicals.
The gas cloud drifted about 16 kilometres to San Antonio's Sea World amusement park, where six people were treated for respiratory irritation.
Rescue crews also found the bodies of two people in a house near the crash site, but it wasn't clear if their deaths were a result of the derailment.
A spokesperson for the Burlington Northern Santa Fe railway said the accident happened when a Union Pacific freight ran into a Burlington train.