Coimbatore: Six factory workers from Assam were injured when a boiler in which old tyres were being melted, exploded at a unit in Podanur area on the city outskirts today.
The factory was engaged in extracting oil from old tyres by melting them at high temperature in a boiler, police said.
The workers were putting the tyres in the boiler when they noticed that smoke was not emanating from the top and went to check it. However, it exploded, resulting in burn and splinter injuries to six of them, police said.
All the injured, hailing from Assam, were admitted to the government hospital here, where the condition of two of them was stated to be critical, they added.