A message from MN Department of Agriculture (MDA) The MDA offers safety tips for those maintaining equipment and applying and transporting NH3. Many farmers and custom applicators will soon apply anhydrous ammonia (NH3) after harvest. Even with a rush against time and the weather, safety should never be compromised. Accidents involving NH3 have proven how dangerous and deadly the fertilizer can be when not handled properly. The Minnesota Department of Agriculture (MDA) offers the following tips to farmers, fertilizer dealers and custom applicators on how to safely field apply NH3: Always wear NH3-rated goggles and gloves. Never wear contact lenses. Be sure to have a clean and accessible emergency water supply of at least 5 gallons available. Exercise caution when making connections and disconnections of transfer lines, treating them as if they always contain NH3. Stand upwind when connecting, disconnecting, bleeding lines, or transferring NH3. Also, close, bleed, disconnect and secure ...