Is WIPP the whole Yucca Mountain thing (as National Geographic put it "Yuck, a mountain, full of radioactive waste" or something to that effect)?
Gotta bury that stuff somewhere.
And I agree, you won't see salt use decrease in any of those areas because it's such a big industry. I wish they wouldn't salt anything here, it doesn't actually help. If it just stays cold and you put some sand down it works much better, as the sand embeds in the ice and it acts like sandpaper. Even on clear ice in the cold you have great traction. It's the freeze/thaw cycles that salt (and warm weather) introduces that actually make a slick surface (it's cold enough the whole winter that you only get significant freeze/thaw in the spring really, and even that can be combated with just sand).