The devastation, loss of life, and subsequent health issues inflicted on mankind by 2 nuclear bombs was staggering. Many took notice. The damage inflicted by several thousand relatively small accidents (pipeline leaks,fires, explosions), (houses/building explosions), (asphyxiations), etc. aren't dramatic enough to get much attention. When you add it all up, does it equal or exceed the nuclear toll? It doesn't leave the radioactive contamination that can be measured, but it leaves immeasurable contamination of a different kind. I guess you have to be really really big to get attention.