Human rights activist, Malak Amidan, who's visiting Australia, is calling for Australia to stop phosphate imports from the territory...Malak Amidan says workers in Western Sahara are exploited every day. None more so than those in the territory's phosphate industry...But the Fertilizer Industry Federation says the three companies that do source high-grade phosphate rock from Western Saharan deposits - Wesfarmers, Impact Fertilisers and Incitec Pivot - have advice it is legal under international law with no trading restrictions imposed by the Federal Government.