The 2009 Korba chimney collapse occurred in the town of Korba in the Indian state of Chhattisgarh on 23 September 2009. It was under construction under contract for the Bharat Aluminium Co Ltd (BALCO). Construction had reached 240 m (790 ft) when the chimney collapsed on top of more than 100 workers who had been taking shelter from a thunderstorm. At least 45 deaths were recorded.[1][2][3]