I had to chuckle this past weekend, some of the local cities who are running low on salt have trucked out this "new great idea" in dealing with all the snow. They are calling this new great idea, "furnace slag". Uh, folks, its called cinders. Its black, and you either throw it down instead of salt, or cut the salt with it. Most rural areas, at least here in Ohio, have been using it since forever. I laugh cause this is the only thing they used in my area growing up in the 60's and 70's, AND, only at the intersections.