China: According to statistics from the State Administration of Work Safety, a total of 36 deaths were reported in 10 liquid ammonia leak cases nationwide from 2002 to 2009, reported the 21st Century Business Herald
The Spokesman Review-Sep 8, 2013
... report of a 2007 ammonia refrigerant leak at the North Oak ice-making facility. Did that incident cause any concern among your neighbors?
2006 - no incidents