A synthetic ammonia leak at a chemical plant in Central China’s Henan province poisoned 20 residents in a nearby village It was reported that there were 300 kg of synthesized ammonia leaked from a cracked pipe.

Proximate causes:
• Inadequate tools, equipment & vehicles (Pipe crack)

Source: A web-based collection and analysis of process safety incidents (https://www.sciencedirect.com/science/article/abs/pii/S0950423016302285)
Image Credit: India.com