A) Hand Picking: The stones can be picked by hand and separated.
b) Vaporisation: Salt can be separated from salt-water solution by Vapourisation. After all water is boiled off, only salt will remain. The water can be condensed and collected.
c) Filtration: Water can be separated from mud by Filtration. Use a filter paper to filter the mud-water. The water can be collected in a beaker and mud will stay on the filter paper.