A barrel of sulphuric acid accidentally tipped over at a factory in the Savar Tannery Industrial Estate on October 3. The acid burnt four workers. They had to be taken to the burn unit at Dhaka Medical College Hospital nearly 20 kilometres away. Amid the awful city traffic, it took four hours to get them there and it was too late for one of them. Hashem Ali, 35, of Dinajpur, died.