That is one reason I stopped working at an ammonium nitrate (can explode on its own if its temperature was rapidly raised to 400 degrees Fahrenheit since it is an oxidizer) manufacturing plant many years ago. The plant was originally produced explosive-grade ammonium nitrate and later converted to fertilizer. As a side note, the plant was surrounded by hills so that in the event of an explosion the blast wave would not damage adjacent precursor chemical plants like ammonia and nitric acid and urea.