Officials said Friday that full train service was restored after a train derailment caused an explosion.
The incident occurred during the early morning hours Wednesday, and sent flames shooting hundreds of feet into the air in north Columbus.
Seventeen of 98 cars that were carrying chemicals like ethanol and Styrene, a chemical used to make plastic, derailed. Cars carrying grain and corn syrup also fueled the fire, which burned until 2:45 a.m. Thursday.
Crews worked to quickly clear the burned cars from the tracks and to repair the damaged tracks. The railroad tracks reopened at 3:40 a.m. Friday.
While the tracks reopened, a 12-person team from the National Transportation Safety Board continued to investigate the cause of the derailment.
NTSB officials said sensors on the railroad tracks showed no abnormalities as the train passed by. They also said that the sensors would have picked up any heat related issues with the train and possibly any issues with the trains wheels.
Investigators also said that the train was traveling below the recommended speed, and its operators noticed no problems with the track as they approached the curve where the crash happened.
It could be a year before the investigation is complete.
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July 11, 2012: Dozens Forced To Evacuate After Train Derailment Causes Explosion