Homeschool Resource and Freebie of the Day - Cargill's Salt Works Virtual Tour

At Cargill.com you can find out how salt is made!  You can take a Free virtual tour of Cargill Salt's San Francisco Bay Area salt works and see how they use ancient techniques and modern tools to refine 650,000 tons of salt per year!  Learn about salt refinery, salt stacks and solar ponds all from the comfort of your home!  Check it Out!