Many salt mines in New Mexico. El Chino, outside Carlsbad, etc. Most 500-750' feet deep. Layered beneath rock strata. Sandy Mid-Mojave **************Make your life easier with all your friends, email, and favorite sites in one place. Try it now. (http://www.aol.com/?optin=new-dp&icid=aolcom40vanity&ncid=emlcntaolcom00000010)