It has been estimated that the average human body contains, at most, 35mg of aluminium, of which approximately 50% is in the lungs, and most of the remainder is in the skeleton. There is no known biological role for aluminium - it does not appear to be an essential trace element for humans - and the body has highly effective barriers to exclude aluminium and similar metals.
Hot & Humid climate of the Gulf
The summer climate in the Gulf countries is hot & humid. Considering the added temperature of the Aluminium process in the smelter, creates very challenging conditions for the operations in the smelter.