On Monday August 14, 1989, high liquid level alarms sounded several times throughout the day in the Engine Room of XXXXXXXX indicating high amounts of liquid ammonia returning from the production area to the engine room. Mr. XXXXXXXX began his shift at 4 pm between 5 pm and 5:15 pm hammering was heard in the “No. 2 XXXX Compressor” (1962) indicating the presence of liquid ammonia in the compressor. Shortly thereafter a pump out valve on the “No. 2 XXXX Compressor” (1962) exploded catastrophically releasing liquid ammonia. A second worker, while injured, managed to escape from the engine room. See details below…