the reactor accident at the chernobyl nuclear power plant.
The Chernobyl Nuclear Power Plant underwent a level 7 event - the worst accident so far. The plant, located in the Soviet Union near Pripyat in Ukraine lost its number four reactor on 26 April 1986. A link to the Wikipedia article on the accident is provided.
Worst reactor accident to that date. The Japanese 2011 accident may turn out to be worse however.
Three mile island was the site of the worst nuclear 'accident' in america's history. The reactor went into meltdown - releasing radioactive material into the atmosphere.
What exactly constitutes the single "worst" trucking accident in Canadian history is subjective. However, a compilation of some of the worst truck accidents can be found on YouTube.
The answer your probably looking for is 'melt down' however a melt down is a very rare event and the worst form of 'nuclear accident'.
The #4 reactor is the reactor at the Chernobyl Nuclear Power Plant (Pripyat, Ukraine) that exploded on April 26, 1986. It is still the worst nuclear accident to ever take place anywhere.
The worst railroad accident to ever have occurred in the United States of America was the Great Train Wreck of 1918. It is considered to be the worst accident in American history.
The Chernobyl nuclear accident.
The worst aircraft accident in history was definitely, in my opinion, the Tenerife airport disaster. It was very morbid what with all the deaths. Want more info? Go to wikipedia and search it.
Three Mile Island, Pa, 1979
A long time ago in a galaxy far far away...
The worst accident in history is considered to be the Chernobyl nuclear disaster that occurred in 1986 in Ukraine. The consequences of the accident included the release of a large amount of radioactive material into the environment, leading to widespread health issues, environmental contamination, and the displacement of thousands of people from their homes. The long-term effects of the disaster are still being felt today.