Once the rock salt into large pieces salt crusher machine is broken and crushed salt scale from 0 to 5 and 6and 6 up to 10 ml.
Larger than salt grains with sizes smaller than a grain of salt the size of a walnut, which is almost the largest is Shilati salt.
Named because of the size of the salt used in the fishing industry and disinfection is that it is one of Shilati salt intake.