Most people probably think of Salt as simply that white Granular food seasoning found in a salt shaker on virtually Every dining table for adding taste. It is that, surely, but it is far more. It is an essential Element in the diet of not only humans but of animals, And even of many plants. It is one of the most effective And most widely used of all food preservatives. It’s industrial and other uses are almost without number. The fact is that throughout history, salt-called sodium Chloride by chemists Salt, or sodium chloride, is a chemical compound with the formula NACl. For every gramme of salt, almost 40 per cent is sodium (NA) and over 60 per cent is chlorine (Cl) it is completely non-flammable.
It has been such an important Element of life that it has been the subject of  much folklore and traditions. It served as money at various times And places and it has been the cause of bitter warfare. Salt was in general use long before history, as we know it, began to be recorded by the pharos  for preserving mummies .
Many people are surprised when they now that table salt or salt used in cooking do not constitute more than 10% -15 %  of the total produced salt around the world.  One the research studies concluded that slat is used in manufacturing  over 14,000 products all over the world.

TYPES OF SALT

As raw salt the most famous  2 kinds are sea salt and rock salt. Sea Saltoccurs naturally in sea-water. When an area of sea-water becomes enclosed,the sun causes the water to evaporate leaving beds of raw salt.For Rock salt , over

Many millions of years, other sediments have been deposited above the salt, leaving the beds of rock salt below the surface of the ground.Egypt is famous for its sea salt that obtained mainly from its North coast over theMediterranean sea.
Many process are used in Egypt for refining salt depending on its uses; however ; unfortunately most of our exports of salt is still in its  raw format.