Each year, cities throughout the US scatter 19.5 million tons of salt on icy, snowy roads. Few people give it any thought beyond complaining about the stuff turning their car into a rusty heap, or pause to wonder where it all comes from. A lot of that salt is mined in Ohio, pulled from the remains of massive inland sea that dried up more than 400 million years ago.
Oregon is too "environmentally-friendly" for that sort of thing. Never mind that road salt has never been implicated in environmental damage in the states that use it, our Democratics hate the stuff because salt. So they just mess up your vehicle by spreading sand and gravel on wintery roads, much to the delight of body shops and windshield-repair folks.