Characterized salt Siwa focusing very high the highest percentage in the world 800 thousand ppm and scramble by industrial nations and the European not only for its ability to dissolve snow from roads and airports, but because it contains one thousand four hundred element enters in many industries, including soap, rayon and oil refining, textile and chlorineand caustic soda, glass, toothpaste, detergents and cooling processes and rocket fuel and gunpowder and bricks, even in sewage treatment and other Fills nine lakes surrounding oasis "Siwa" on an area of 55 thousand acres of rare quality salt scrambling European and Arab countries and also the local market