Nuclear test fallout in St. George, Utah

In the 80s, people started saying, can we put properties or performance in with the stresses? Now that we know the stresses and the geometry, can we calculate fatigue cracking, stress corrosion cracking, performance? So now the national labs — a lot of this is driven by the weapons labs, the nuclear guys, because you can't go test nuclear weapons anymore. You have to do it all in computers. The supercomputers are simulating nuclear explosions in hundred-million-dollar or billion-dollar programs, because you can't go and spend a billion dollars blowing up Nevada. It's part of the treaties. And all those little sheep in Utah don't die from radiation poisoning anymore. You know that story — how the winds from the nuclear test sites blew over St. George, Utah, and a bunch of sheep died, and some people in St. George said, why are sheep dying? The people at DOE went, no. Unfortunately some of the humans in St. George were also being rained on.