Of 2,415 reported releases of hazardous substances, 107 (4.4%) involved ammonia. Of the 814 people injured during releases of hazardous substances, 61 (7.5%) were injured following ammonia events. Equipment failure caused 58% of the ammonia releases and injured 38 people. Most ammonia releases involved piping (44%). 44% of injured people were employees, 41% were members...