Windsor Salt, is mined from under lake erie in Windsor, Ontario. You used to be able to do a tour. https://en.wikipedia.org/wiki/Windsor_Salt_Mine https://en.w

Windsor Salt, is mined from under lake erie in Windsor, Ontario. You used to be able to do a tour. https://en.wikipedia.org/wiki/Windsor_Salt_Mine https://en.wikipedia.org/wiki/Windsor_Salt_Mine