ANFO of Shijiazhuang, China, on 16 March 2001. A total of 108 people were killed, and 38 others injured when, within a short time, several ANFO bombs exploded near four apartment buildings. Improvised bombs made with agricultural-grade AN are less sensitive and less efficient than the explosive-grade variety. In November 2009, a ban on ammonium sulfate, ammonium nitrate, and calcium ammonium nitrate fertilizers was imposed in the former Malakand Division – comprising the Upper Dir, Lower Dir, Swat, Chitral and Malakand districts of the North West Frontier Province (NWFP) of Pakistan – by the NWFP government, following reports that those chemicals
Improvised explosive device was the "Mason jar grenade." The safety pin of hand grenades would be pulled and the grenades would be placed in glass Ball Mason jars, which would hold back the safety lever. The safety lever would release upon the shattering of the jar and the grenade would detonate. This particular variant was popular with helicopter warfare, and were used as improvised anti-personnel cluster bombs during air raids. They were easy to dump out of the flight door over a target, and the thick Ball Mason glass was resistant to premature shattering. They could also be partially filled with gasoline or