This page is in the Planning Stages: Suggestions for Cases Welcome:

Bhopal Gas Tragedy

Boston Molasses Disaster, aka Great Molasses Flood (January 15, 1919)

Chernobyl Nuclear Power Plant Disaster - April 26, 1986

Cleveland East Ohio Gas Explosion - Oct. 20, 1944

Fukushima Daiichi Nuclear Power Plant - March 11, 2011

Sverdlovsk Anthrax Leak (1979) Biological Accident