An explosion rocked a French nuclear site used to help decommission other facilities. France derives the highest percentage of its electricity from nuclear energy of any country in the world, so problems with its nuclear system pose a very serious threat to the country's productivity. That said, this site is not a large nuclear facility and does not contain electricity-producing reactors. The Marcoule operation has a long history in the French nuclear program, and was hoping to be selected to house one of France's next-generation reactors.
What You Need to Know About the Nuclear Explosion in France
An accident at a site used to clean up nuclear waste killed one worker, but does not appear to have caused radiation leaks