Salt in the Hollow Earth:

Hey everyone,
            Here is a question for the Scientifically minded Hollow Earthers here... In Hank Krausman's account, he mentioned the reason the "Dutchman", of the Lost Dutchman Mine was getting gold from Inner Earthers, was because salt was scarce where they are and gold is plentiful. Any idea why that is? Why there supposedly is hardly any/less salt down there, and lots upon the surface? Thanks, Semisi