> Sand =! Industrial usable Sand. Not all kind of "Sand" is suited for the industry(today). Most desert/dune sand is to fine grained and has a smooth surface T

> Sand =! Industrial usable Sand. Not all kind of "Sand" is suited for the industry(today). Most desert/dune sand is to fine grained and has a smooth surface That's why you mine it to the East, closer to where it erodes, rather than to the West, where it is fine enough to be considered dust.