MEMBERS UPDATE on 4/12/14 from Minnesota Department of Agriculture (MDA)… On October 31, 2012 at 6:00 p.m. while anhydrous ammonia (ammonia) field application assembly was making a turn at the end of the field, the hitch connection between the application/toolbar unit and the nurse tank failed. The break-away coupling device failed to disengage, causing the threaded fitting at one end of the withdrawal hose to fail resulting in the air release of ammonia. The video illustrates the ammonia release.