A look at some deadly explosions involving ammonium nitrate

The investigation into an explosion in the harbor of Lebanon's port city of Beirut is focusing on how 2,750 tons of ammonium nitrate, a highly explosive chemical used in fertilizers, came to be stored at the facility for six years, and why nothing was done about it.Aug. 12, 2015: A massive warehouse explosion rocked the port city of Tianjin, China, killing 173 people and injuring nearly 800.Investigators found the warehouse held illegal stores of ammonium nitrate, which caught fire and caused a