Environmental, Health, and Safety Guidelines PHOSPHATE FERTILIZER PLANTSMANUFACTURING APRIL 30, 2007 4 WORLD BANK GROUP NO 2 with some nitric acid, from phosphate rock digestion in nitric acid; fluorides from the phosphate rock reactions; aerosol emissions, including ammonium nitrate (NH 4NO 3), ammonium fluoride (NH 4F), and ammonium chloride (NH