I'd like some "really wrong" examples that aren't 60 years old today. Even Fukushima was quite clean and it was a total compounded disaster... Three Miles Isla

I'd like some "really wrong" examples that aren't 60 years old today. Even Fukushima was quite clean and it was a total compounded disaster... Three Miles Island is ancient already and limited in impact. Anything else? I can look and find examples of improper dust and ash disposal, mining accidents, incorrect filter operations daily, on the other hand. Sometimes fatalities too, every some years.