KOLKATA, INDIA - OCTOBER 21: Workers busy making fire crackers before Diwali at Champahati, South 24 Parganas Dist, which is the hub for fire cracker making, on October 21, 2016 in Kolkata, India. Mostly cracker makers don't have proper firework licensed. They have no formal training, machines and or safety gear as they fill gunpowder into small earthen pots, rocket tubes and paper shells. (Photo by Samir Jana/Hindustan Times )