NAICS 325311 — Nitrogenous Fertilizer Manufacturing 
BEA sector: Fertilizer manufacturing
Activity: Ammonia, anhydrous and aqueous, manufacturing
Activity: Ammonium nitrate manufacturing
Activity: Ammonium sulfate manufacturing
Activity: Anhydrous ammonia manufacturing
Activity: Fertilizers, mixed, made in plants producing nitrogenous fertilizer materials
Activity: Fertilizers, natural organic (except compost), manufacturing
Activity: Fertilizers, of animal waste origin, manufacturing
Activity: Fertilizers, of sewage origin, manufacturing
Activity: Nitric acid manufacturing
Activity: Nitrogenous fertilizer materials manufacturing
Activity: Plant foods, mixed, made in plants producing nitrogenous fertilizer materials
Activity: Urea manufacturing