I was reading an article in a science magazine about the danger to Three Gorges Dam in China. It said that as many as 400 million people could be at risk though that sounds excessive. But it estimated that if Three Gorges Dam was breached that it would killed millions, contaminate a huge area with radioactivity as flood waters destroyed nuclear power plants downstream, and that many more would die of famine and disease. It suggested that as little as a 20 lb. explosive device might be able to cause a breach. If a 20lb. demolition charge could do that then most certainly a 2,000 lb. general purpose bomb could do the same.