Nearby residents breathed a sigh of relief after a gas leak at a factory owned by Indorama Ventures Plc in Nahon Pathom on Thursday morning was quickly contained. The leak of two toxic chemicals — diphenyl oxide and biphenyl used as heat transfer fluid — was brought under control within 10 minutes. But the smell from the leak was reported as far as 20km away from the factory and the government ordered a number of schools and universities to close due to safety concerns. The factory, which produces polyester fibres, yarns and chips, was ordered to suspend operations for 15-days while an investi…