US rail freight giant Norfolk Southern is continuing to face tough questions in the wake of the Ohio train derailment on 3 February, which saw 51 cars crash off the tracks in the small town of East Palestine, 20 of which were carrying toxic chemicals.
The accident, subsequently attributed by investigators to a broken axle, forced emergency responders to conduct a controlled burn of some of the materials, which sent a black plume of smoke billowing above the town and forced the temporary evacuation of some 2,000 residents from their homes.
